CN110038425B - graphene-TiO 2 Photocatalytic air purifier - Google Patents
graphene-TiO 2 Photocatalytic air purifier Download PDFInfo
- Publication number
- CN110038425B CN110038425B CN201910279714.3A CN201910279714A CN110038425B CN 110038425 B CN110038425 B CN 110038425B CN 201910279714 A CN201910279714 A CN 201910279714A CN 110038425 B CN110038425 B CN 110038425B
- Authority
- CN
- China
- Prior art keywords
- air
- graphene
- tio
- supply duct
- air supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910010413 TiO 2 Inorganic materials 0.000 title claims abstract description 51
- 230000001699 photocatalysis Effects 0.000 title claims abstract description 37
- 239000011229 interlayer Substances 0.000 claims abstract description 48
- 239000011248 coating agent Substances 0.000 claims abstract description 43
- 238000000576 coating method Methods 0.000 claims abstract description 43
- 229910052751 metal Inorganic materials 0.000 claims abstract description 42
- 239000002184 metal Substances 0.000 claims abstract description 42
- 238000007146 photocatalysis Methods 0.000 claims abstract description 13
- 230000000149 penetrating effect Effects 0.000 claims abstract description 3
- 238000003756 stirring Methods 0.000 claims description 30
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 27
- 239000003973 paint Substances 0.000 claims description 24
- 238000001027 hydrothermal synthesis Methods 0.000 claims description 17
- SWXVUIWOUIDPGS-UHFFFAOYSA-N diacetone alcohol Chemical compound CC(=O)CC(C)(C)O SWXVUIWOUIDPGS-UHFFFAOYSA-N 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 11
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 10
- 238000009210 therapy by ultrasound Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000010410 layer Substances 0.000 claims description 9
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 8
- 239000000839 emulsion Substances 0.000 claims description 8
- 238000001179 sorption measurement Methods 0.000 claims description 8
- 229910002804 graphite Inorganic materials 0.000 claims description 7
- 239000010439 graphite Substances 0.000 claims description 7
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000008103 glucose Substances 0.000 claims description 6
- 235000019353 potassium silicate Nutrition 0.000 claims description 6
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 6
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 6
- RWNUSVWFHDHRCJ-UHFFFAOYSA-N 1-butoxypropan-2-ol Chemical compound CCCCOCC(C)O RWNUSVWFHDHRCJ-UHFFFAOYSA-N 0.000 claims description 5
- 239000005083 Zinc sulfide Substances 0.000 claims description 5
- 230000032683 aging Effects 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- DCKVFVYPWDKYDN-UHFFFAOYSA-L oxygen(2-);titanium(4+);sulfate Chemical compound [O-2].[Ti+4].[O-]S([O-])(=O)=O DCKVFVYPWDKYDN-UHFFFAOYSA-L 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 5
- 229910000348 titanium sulfate Inorganic materials 0.000 claims description 5
- 229910052984 zinc sulfide Inorganic materials 0.000 claims description 5
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 claims description 5
- 230000003472 neutralizing effect Effects 0.000 claims description 4
- 230000004888 barrier function Effects 0.000 claims description 2
- 238000000746 purification Methods 0.000 abstract description 20
- 238000004887 air purification Methods 0.000 abstract description 6
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 27
- 230000000694 effects Effects 0.000 description 24
- 230000006872 improvement Effects 0.000 description 11
- 238000000034 method Methods 0.000 description 10
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 239000000835 fiber Substances 0.000 description 7
- 230000009467 reduction Effects 0.000 description 7
- 238000006722 reduction reaction Methods 0.000 description 7
- 125000006850 spacer group Chemical group 0.000 description 6
- 239000000428 dust Substances 0.000 description 5
- 229910021389 graphene Inorganic materials 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 239000006260 foam Substances 0.000 description 4
- 239000011941 photocatalyst Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 235000011114 ammonium hydroxide Nutrition 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- -1 formaldehyde, benzene series Chemical class 0.000 description 3
- 239000000416 hydrocolloid Substances 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 239000002086 nanomaterial Substances 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 238000003760 magnetic stirring Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000006798 recombination Effects 0.000 description 2
- 238000005215 recombination Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- 239000012855 volatile organic compound Substances 0.000 description 2
- HIXDQWDOVZUNNA-UHFFFAOYSA-N 2-(3,4-dimethoxyphenyl)-5-hydroxy-7-methoxychromen-4-one Chemical compound C=1C(OC)=CC(O)=C(C(C=2)=O)C=1OC=2C1=CC=C(OC)C(OC)=C1 HIXDQWDOVZUNNA-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- 206010019233 Headaches Diseases 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004581 coalescence Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 231100000869 headache Toxicity 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000005457 ice water Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000012286 potassium permanganate Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000004317 sodium nitrate Substances 0.000 description 1
- 235000010344 sodium nitrate Nutrition 0.000 description 1
- 239000008247 solid mixture Substances 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8668—Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8678—Removing components of undefined structure
- B01D53/8687—Organic components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20707—Titanium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/70—Non-metallic catalysts, additives or dopants
- B01D2255/702—Carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/80—Type of catalytic reaction
- B01D2255/802—Photocatalytic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/702—Hydrocarbons
- B01D2257/7027—Aromatic hydrocarbons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
Abstract
The invention discloses a graphene-TiO 2 Photocatalysis air purifier belongs to air purification equipment technical field. The metal support net is arranged in parallel along the height direction of the shell, the inside of the shell is divided into a plurality of interlayer, and each interlayer is provided with a visible light source and graphene-TiO 2 A coating; the middle part of the shell is provided with a round table-shaped air supply duct penetrating through the metal supporting net along the height direction, the upper end of the air supply duct is closed, the lower end of the air supply duct is provided with a through hole, the air supply duct is provided with a plurality of annular air outlets along the height direction, each annular air outlet is communicated with a corresponding interlayer, and the annular air outlets are used for sending air into the corresponding interlayer in an equal amount. The invention is provided with the circular truncated cone-shaped air supply duct, air is equivalently sent into the interlayers through the air outlet on the air supply duct, and is composed of the visible light source and the graphene-TiO in each interlayer 2 The coating purifies the air, can effectively purify the air, improves purification efficiency.
Description
Technical Field
The invention relates to the technical field of air purification equipment, in particular to a graphene-TiO 2 A photocatalytic air purifier.
Background
With the development of social economy and the improvement of the living standard of people, the living room environment of the quality of life of the people is increasingly emphasized, and a safe and healthy living space is urgently desired. However, most of the existing interior decoration and decoration materials contain components harmful to human bodies, such as formaldehyde, benzene series and the like, which cause serious pollution to the indoor environment. In order to solve the problem, an air purifying device is generally adopted to purify indoor air, so that the health of indoor personnel is effectively ensured. The air purifying device mainly purifies the indoor air by combining multiple modes such as physical adsorption, ultraviolet irradiation, nano photocatalysis and the like, and ensures the purifying effect of the indoor air.
The air purification device in the prior art generally adopts titanium dioxide as a catalyst for photocatalytic oxidation reaction to purify indoor air, and the purification principle is as follows: under the irradiation of an ultraviolet lamp, electrons on a valence band are excited to jump over the forbidden band and enter a conduction band due to the fact that the energy of photons is larger than the width of the forbidden band, and corresponding holes are formed on the valence band. Photo-induced cavity h + Has strong electron capturing capability, and the photoinduced electrons e on the guide belt - Has strong activity in TiO 2 The surface forms a redox system. Although photo-induced cavity h + And photo-induced electrons e - And the water in the air and oxygen generate an OH group with strong oxidizing capacity through oxidation-reduction reaction, volatile organic matters such as formaldehyde, toluene and the like can be decomposed into carbon dioxide and water, and the indoor air is evolved, but in the purifying process, ultraviolet light emitted by an ultraviolet lamp is harmful to human bodies to a certain extent on one hand, and on the other hand, ozone is generated in the purifying process to a certain extent, and the ozone is discharged into a room to cause a certain harm to the health of indoor personnel.
By searching, chinese patent application No. 201710494058.X, application publication date: the invention provides a visible light photocatalysis air purifying filter, which is provided with an air inlet, a front dust removing module, an air filtering module, a blower, a rear dust removing module and an air outlet in an air purifier in the application, wherein the 2017 is 10 and 24; the air filtering module comprises an LED lamp and a plurality of graphene fiber layers, and visible light catalytic nano materials are loaded on the surfaces of the fiber layers; although this application purifies the air through the cooperation of LED lamp, graphene fiber layer and the visible light catalytic nanomaterial three of load on the fiber layer surface to effectively avoid secondary pollution ozone's production, when this application is in the use, the effect of the photocatalytic nanomaterial on the graphene fiber layer that is close to preceding dust removal module reduces gradually, because the hindrance of front end graphene fiber layer leads to the side flow direction air-blower of most unpurified complete air from graphene fiber layer, consequently, leads to the purifying effect of exhaust air not ideal, remains to be improved.
Disclosure of Invention
1. Technical problem to be solved by the invention
The invention aims to solve the problem of unsatisfactory purifying effect of an air purifying device in the prior art, and provides graphene-TiO 2 A photocatalytic air purifier; the invention is provided with the circular truncated cone-shaped air supply duct, air is equivalently sent into the interlayers through the air outlet on the air supply duct, and is composed of the visible light source and the graphene-TiO in each interlayer 2 The coating purifies the air, can effectively purify the air, improves purification efficiency.
2. Technical proposal
In order to achieve the above purpose, the technical scheme provided by the invention is as follows:
the invention relates to graphene-TiO 2 The photocatalytic air purifier comprises a visible light source and a metal supporting net, wherein the visible light source and the metal supporting net are arranged in the shell, the metal supporting net is arranged in parallel along the height direction of the shell, at least three metal supporting nets are arranged, the shell is divided into a plurality of interlayers, and each interlayer is provided with the visible light source and graphene-TiO 2 A coating; the middle part of the shell is provided with a truncated cone-shaped air supply duct penetrating through the metal supporting net along the height direction; the upper end of the air supply duct is closed, the lower end of the air supply duct is provided with a through hole, the air supply duct is provided with a plurality of annular air outlets along the height direction of the air supply duct, each annular air outlet is communicated with a corresponding interlayer, and the annular air outlets send air into the corresponding interlayers in an equal amount.
As a further improvement of the invention, the included angle between the bus and the bottom surface of the air supply channel is arctan6.67.
As a further improvement of the invention, the diameter of the upper end face of the air supply channel is 50mm, the diameter of the lower end face is 200mm, and the height is 500mm.
As a further improvement of the invention, the number of the annular air outlets is 3, the width of the annular air outlets is 20mm, and the opening positions of the annular air outlets are respectively positioned at 100mm, 250mm and 400mm in the height direction of the air supply duct; the metal support net is provided with 4, wherein the first metal support net from top to bottom in the shell is parallel to the upper end of the air supply duct.
As a further improvement of the invention, the air supply duct is provided with at least 3 support columns at equal intervals along the circumferential direction, each support column is vertical and penetrates through the metal support net, a cylindrical carrier is arranged on the support column in each interlayer, and the surface of the cylindrical carrier is provided with graphene-TiO 2 And (3) coating.
As a still further improvement of the present invention, the graphene-TiO 2 The coating is sprayed on a coating film which is adhered to the surface of the cylindrical carrier and/or the inner wall of the interlayer.
As a further improvement of the invention, the metal supporting net is loaded with a honeycomb activated carbon adsorption material.
As a further improvement of the invention, the visible light source is an LED lamp, and the LED lamp is arranged on the inner wall of each interlayer.
As a further improvement of the invention, the bottom of the shell is provided with an air inlet, and a HEPA filter screen is arranged between the air inlet and the axial flow fan; the top of the shell is an air outlet.
As a still further improvement of the present invention, the graphene-TiO 2 The preparation method of the coating comprises the following steps:
firstly, preparing graphite oxide into a solution with the concentration of 1mg/ml, and performing ultrasonic treatment for 1-1.5 hours;
step two, weighing 150ml-200ml of the solution, weighing 1.2g of titanium sulfate and 60mg of glucose to dissolve in the solution, performing ultrasonic treatment for 1.3-1.8h, and magnetically stirring for 12-16h;
transferring the stirred solution into a hydrothermal reaction kettle, placing the hydrothermal reaction kettle into an oven, controlling the temperature to be 130-170 ℃, keeping the temperature for 10 hours, drying, slowly heating to 400-500 ℃ in a muffle furnace, and keeping the temperature for 2-2.5 hours;
step four, naturally cooling to room temperature, and grinding for later use;
adding water, water glass, tributyl phosphate and propylene glycol butyl ether into a flask, fully stirring, adding the ground powder, and magnetically stirring for 0.4-0.8h;
step six, adding lithopone prepared by mixing 30% zinc sulfide and 70% barium sulfate by mass percent, and stirring for 0.5h;
step seven, adding an acrylic emulsion, and then adding a neutralizing agent to enable the pH value to reach 8;
and step eight, adding diatomite and diacetone alcohol, uniformly stirring, and aging to obtain the graphene-TiO 2 coating.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following remarkable effects:
(1) The invention relates to graphene-TiO 2 The photocatalytic air purifier is divided into a plurality of interlayers through a metal supporting net, and air is equivalently fed into each interlayer through a truncated cone-shaped air supply duct, and is subjected to a visible light source and graphene-TiO (titanium dioxide) 2 And the air is purified under the combined action of the paint, so that the purification quality and the purification efficiency of the air purifier are improved.
(2) The invention relates to graphene-TiO 2 In order to ensure the efficiency and purification quality of air purification, the included angle between the bus and the bottom surface of the circular truncated cone-shaped air supply duct is set to arctan6.67, namely the side slope of the air supply duct is larger, and air is easier to be sent into the corresponding interlayer through the annular air outlet in an equivalent manner when flowing in the air supply duct, so that a good purification effect is achieved.
(3) The invention relates to graphene-TiO 2 In order to further improve the purification effect of the air purifier, on the one hand, the photocatalytic air purifier comprises graphene-TiO 2 The coating is arranged on the cylindrical carrier, on the other hand, the honeycomb activated carbon adsorption material is loaded on the metal supporting net, so that the purifying effect of air in each interlayer is better, and the quality of air purification is effectively ensured.
(4) The invention relates to graphene-TiO 2 Photocatalytic air purifier by combining graphene-TiO 2 The coating is sprayed on the coating film, so that the coating film is convenient to adhere to the surface of the cylindrical carrier, and the coating film is convenient to replace after being used for a period of time, so that the use cost is reduced, and the service life of the air purifier is prolonged.
(5) The invention relates to graphene-TiO 2 Photocatalytic air purifier, graphene-TiO thereof 2 Compared with the photocatalyst in the prior art, the coating can effectively inhibit the recombination of photo-generated carriers, prolong the spectral response range, degrade volatile organic compounds under the condition of visible light, has shorter purification time and high efficiency, and simultaneously avoids the generation of secondary polluted ozone.
Drawings
FIG. 1 is a schematic illustration of a graphene-TiO system according to the present invention 2 Schematic cross-sectional structure of the photocatalytic air purifier;
FIG. 2 is a schematic diagram of a graphene-TiO system according to the present invention 2 Schematic top view structure of photocatalytic air purifier;
FIG. 3 is a schematic view of a structure of an air supply duct according to the present invention;
fig. 4 is a schematic structural view of the metal supporting net of the present invention.
Reference numerals in the schematic drawings illustrate:
10. a housing; 11. a visible light source; 20. an air inlet; 30. HEPA filter screen; 40. a shock absorption and noise reduction mechanism; 50. an axial flow fan; 60. a metal support net; 61. a first fixing hole; 62. a second fixing hole; 70. an air supply duct; 71. a fixed rod; 72. an annular air outlet; 73. a hook; 81. a support column; 82. a cylindrical carrier; 90. and an air outlet.
Detailed Description
For a further understanding of the present invention, the present invention will be described in detail with reference to the drawings and examples.
Example 1
In the prior art, in order to realize the purification of indoor air, the indoor air is generally purified by an ultraviolet lamp and TiO 2 The photocatalyst cleans the air, and although the air cleaning effect is better, the ultraviolet emitted by the ultraviolet lamp cleans TiO 2 The photocatalyst catalyzes to reach the purifying effect, but, can produce certain secondary pollutant-ozone in the whole purification process, ozone can enter the external world along with the air after purifying, because ozone can cause certain injury to the human body, therefore, this kind of air purifier needs further improvement.
Referring to fig. 1, 3 and 4, a graphene-TiO according to the present embodiment 2 The photocatalytic air purifier comprises a visible light source 11 and a metal supporting net 60 which are arranged inside a shell 10, wherein the metal supporting net 60 in the embodiment is arranged in parallel along the height direction of the shell 10, at least three metal supporting nets are arranged, the inside of the shell 10 is divided into a plurality of interlayers, and each interlayer is provided with the visible light source 11 and graphene-TiO 2 When the air to be purified enters the interlayer, the coating is irradiated by the visible light source 11 to lead the graphene-TiO to be 2 The paint acts to purify the air. It is worth to say that the air purifier mainly aims at purifying indoor air; and the visible light source 11 adopts an energy-saving LED lamp, so that ozone harmful to human bodies is avoided from being generated by using an ultraviolet lamp, and meanwhile, the damage to human bodies caused by ultraviolet rays is avoided.
In addition, a graphene-TiO in the present embodiment 2 The photocatalytic air purifier further comprises an air supply duct 70, wherein the air supply duct 70 is arranged along the height direction of the casing 10, and the air supply duct 70 is positioned in the middle of the casing 10. As shown in fig. 1, the air supply duct 70 in the present embodiment is a truncated cone, and penetrates the metal support net 60. As shown in fig. 4, the metal support net 60 in the present embodiment is provided with a first fixing hole 61 at the middle thereof to facilitate the passage of the supply air duct 70. The upper end of the air supply duct 70 in this embodiment is closed, the lower end is a through hole, and an axial flow fan 50 is arranged right below the through hole, for supplying air to be purified into the air supply duct 70; and the air supply duct 70 is provided with a plurality of annular air outlets 72 along the height direction thereof, and each annular air outlet 72 is communicated with a corresponding one of the spacers.
It should be noted that, assuming that the air purifier is not designed with the air supply duct 70, the axial flow fan 50 sends the air to be purified into the upper interlayer, although the air to be purified may be generated by the visible light source 11 and the graphene-TiO 2 The air purifier is purified under the action of the paint, and the purification effect is better for the air purifier which is just started to be used, because the air to be purified needs to move from bottom to top in the shell 10 under the action of the axial flow fan 50 and sequentially passes through each interlayer, the air purifier is equivalent to multi-stage purification of the air in the compartments, so that the air quality of the air discharged out of the air purifier is better; however, during use, graphene-TiO in the bottom-up barrier inside the housing 10 2 The purifying effect of the paint is worse and worse, especially the graphene-TiO in the lowermost interlayer 2 The purifying effect of the paint is the worst, and in order to ensure the purifying quality of the air, the graphene-TiO in the interlayer needs to be treated under the condition of relatively short using time 2 The paint is replaced, resulting in an increase in the use cost of the air purifier. In addition, it is not known which of the spacers should be replaced during the replacement process, which is a headache problem for the replacement personnel, and therefore, all of the graphene-TiO in all of the spacers are generally used 2 The paint is replaced, so that the resource waste is caused.
graphene-TiO in this embodiment 2 The photocatalytic air purifier can well solve the problems of the air purifier by adding the air supply duct 70.
In addition, since the air supply duct 70 is provided with the annular air outlet 72 so that the circular truncated cone-shaped air supply duct 70 is divided into a plurality of parts, in order to make the air supply duct 70 as a whole, in this embodiment, a plurality of fixing rods 71 are fixedly arranged on the side wall of the air supply duct 70 at equal intervals along the circumferential direction thereof, and as shown in fig. 3, the fixing rods 71 are arranged along the bus direction of the air supply duct 70; in addition, the diameters of the first fixing holes 61 are different in each metal supporting net 60 located inside the housing 10, and as shown in fig. 1, the diameters of the inside of the housing 10 are gradually increased from top to bottom. Preferably, the fixing bars 71 in this embodiment are provided in 4.
graphene-TiO in this embodiment 2 When the axial flow fan 50 rotates, the photocatalytic air purifier drives air to move, the air is sent into the air supply duct 70 and is equally sent into the corresponding interlayer through the annular air outlet 72, and the visible light source 11 and the graphene-TiO in each interlayer are used for purifying the air 2 The paint can purify the air flowing into each air together, and the air purifier has greatly improved purification quality and purification efficiency due to the fact that the air to be purified is distributed into each interlayer in an integral and equal amount.
Example 2
graphene-TiO of the present embodiment 2 A photocatalytic air purifier substantially as herein described with reference to example 1, and further: because the flow speed of the air in the general room is small, the indoor personnel are also less, and under the condition that the indoor personnel are not influenced, the rotating speed of the axial flow fan 50 is small, and the generated noise is small, so that in order to make the air easier to be sent into the corresponding interlayer through the annular air outlet 72 in an equal amount, the included angle between the bus bar and the bottom surface of the air supply duct 70 in the embodiment is arctan6.67, namely the side slope of the air supply duct 70 is large, and when the air with a small flow speed flows in the air supply duct 70, the air with a small flow speed uniformly enters the corresponding interlayer in an equal amount for progressive purification, thereby achieving a good purification effect.
It should be noted that, in the embodiment, if the included angle between the bus and the bottom of the air supply duct 70 is smaller than arctan6.67, that is, the side slope of the air supply duct 70 is smaller than arctan6.67, so that air flows out of the annular air outlet 72 directly during the air flowing in the air supply duct 70, so that the air flows in the air supply duct 70 less, and therefore, the equal amount of air is less likely to enter the corresponding partition layers, which affects the purifying effect of the air purifier; if the included angle between the bus and the bottom of the air supply duct 70 is greater than arctan6.67, that is, the side slope of the air supply duct 70 is greater than arctan6.67, so that air mainly runs to the top of the air supply duct 70 in the flowing process, and under the effect of sealing the top, the annular air outlet 72 in the air supply duct 70, which is selectively located at the uppermost part of the air supply duct 70, flows to the interlayer, so that the air purifier mainly purifies through the interlayer located at the upper end inside the casing 10, and the purifying effect of the air purifier is seriously reduced.
Preferably, the diameter of the upper end surface of the air supply duct 70 in this embodiment is 50mm, the diameter of the lower end surface is 200mm, and the height is 500mm; in addition, the number of the annular air outlets 72 is 3, the width of the annular air outlets 72 is 20mm, and the opening positions of the annular air outlets 72 are respectively positioned at 100mm, 250mm and 400mm in the height direction of the air supply duct 70; in order to match the number of the spacers with the number of the annular air outlets 72, the metal support net 60 in the present embodiment is provided with 4, wherein the first metal support net 60 located in the housing 10 from top to bottom is parallel to the upper end of the air supply duct 70, i.e. the first spacer located in the top end of the housing 10 has no corresponding annular air outlet 72, and meanwhile, since the axial flow fan 50 is disposed below the bottom end of the air supply duct 70, the first spacer located in the bottom end of the housing 10 has no corresponding annular air outlet 72.
In addition, graphene-TiO in the present embodiment 2 The paint is sprayed on the inner wall of each interlayer, so that the air can be purified conveniently.
In order to ensure that the structural design of the air supply duct 70 in this embodiment can realize that the annular air outlets 72 are equally fed into the corresponding interlayer, the accounting is performed on the interlayer, and the specific process is as follows:
(1) The sections of two adjacent air outlet slits are taken at will by the pipeline, and the following energy modes can be listed:
P j,a +P d,a ＝P j,b +P d,b +ΔP a～b
wherein P is j,a ，P d,a Respectively static pressure and dynamic pressure at section a; p (P) j,b ，P d,b Respectively static pressure and dynamic pressure at section b, delta P a～b Is the pressure loss between two sections;
(2) If flow distribution, i.e. equal air volume, is required, P is required d,a -P d,b ＝ΔP a～b Ensuring that the static pressure of each outlet section is equal;
(3) Assume that the air intake of the lower end of the air supply duct 70 is 600m 3 And/h, the air quantity of each annular air outlet 72 is 200m 3 And/h. Then it is required toSatisfy the following requirementsWherein d is 1 ，d 2 ，d 3 The diameters of the sections of the annular air outlets 72, P d,a ，P d,b ，P d,c Dynamic pressure of the cross section of each annular air outlet 72.ΔP a～b ，ΔP b～c For the pressure loss between the sections of the adjacent two annular air outlets 72, delta P can be obtained by combining the friction resistance diagram of the unit length of the ventilating duct in the national general ventilating duct calculation table a～b ＝ΔP b～c ＝R m l＝0.15R m Wherein R is m For the specific friction of the ventilation duct per unit length, l is the distance between two adjacent annular air outlets 72, and m is the unit, i.e. l=150mm, so as to satisfy the distance between two adjacent annular air outlets 72 in this embodiment. Meanwhile, the flow characteristics of the truncated cone-shaped pipeline are simulated by combining computational fluid dynamics (FLUENT 15.0), and the structural size design of the air supply duct 70 in the embodiment is found to realize equivalent air supply through a simulation means.
Example 3
graphene-TiO of the present embodiment 2 A photocatalytic air purifier substantially as herein described with reference to example 2, and further: in this embodiment, at least 3 support columns 81 are equally spaced along the circumferential direction of the air supply duct 70, the number of the support columns 81 can be designed to be 3, 4, 5, … …, each support column 81 is vertical and penetrates through the metal support net 60, a cylindrical carrier 82 with a diameter of 50mm and a height of 50mm is arranged on the support column 81 in each interlayer, and graphene-TiO is arranged on the surface of the cylindrical carrier 82 2 And (3) coating.
Preferably, 4 support columns 81 are provided in the present embodiment, as shown in fig. 2, the cross section of the housing 10 in the present embodiment is a square with a length of 400mm, the support columns 81 are located on the diagonal of the square, and the 4 support columns 81 are the 4 vertices of another square; in addition, the LED lamps are respectively arranged on the inner walls of each interlayer as the visible light sources 11, namely, the LED lamps are arranged on the 4 inner walls of each interlayer and are positioned on the midvertical lines of the adjacent 2 support columns 81, so that the visible light sources 11 can conveniently irradiate the cylindrical carrying bodies 82 in all directions, and a good purifying effect is achieved.
As shown in fig. 4, 4 second fixing holes 62 are formed in the corresponding positions in the circumferential direction of the first fixing holes 61 of each metal supporting net 60 in the present embodiment, so that the supporting columns 81 can pass through the metal supporting net 60.
In order to further ensure the air purifying effect of each interlayer, in this embodiment, the metal supporting net 60 is loaded with a honeycomb activated carbon adsorption material, so that on one hand, the activated carbon adsorbs and purifies the air in the purifying process, on the other hand, the purified air in the interlayer below the shell 10 passes through the metal supporting net 60, and the honeycomb activated carbon adsorption material further purifies the flowing air, especially the volatile organic compounds in the air, to improve the purifying effect. The honeycomb activated carbon adsorption material in the embodiment has extremely strong adsorption capacity on low-concentration organic gas, and can remarkably improve the purifying effect of the air purifier on low-concentration pollutants in indoor air.
It should be noted that, as shown in fig. 1, the bottom of the housing 10 in this embodiment is an air inlet 20, a HEPA filter screen 30 is disposed between the air inlet 20 and the axial flow fan 50, and the HEPA filter screen 30 may be made of any one of PP (polypropylene), PET (polyester resin), composite PP-PET, glass fiber, and PTFE (polytetrafluoroethylene), and as a preferred embodiment, the HEPA filter screen 30 in this embodiment is made of PTFE, which has a good purifying effect and can effectively remove particulate matters. When the axial flow fan 50 works, indoor air enters the shell 10 from the air inlet 20 at the bottom and is primarily purified through the HEPA filter screen 30, particulate matters in the air such as dust are effectively filtered, and dust attached to the surface of the graphene-TiO 2 coating film is avoided, so that subsequent air purification is affected. In addition, the top of the housing 10 in this embodiment is an air outlet 90. The design of the air inlet 20 and the air outlet 90 in this embodiment facilitates the circulation and purification of indoor air.
Example 4
graphene-TiO of the present embodiment 2 Photocatalytic air purifier, basically the same asExample 3, further: graphene-TiO in the present embodiment 2 The coating is sprayed on the coating film, and the coating film is adhered on the surface of the cylindrical carrier 82 and/or the inner wall of the interlayer, so that the coating film is adhered on the surface of the cylindrical carrier 82 conveniently by the structural design, the contact area of the photocatalytic material and air to be purified is enlarged, the purification efficiency is improved, the coating film is convenient to replace after being used for a period of time, the use cost is reduced, and the service life of the air purifier is prolonged.
The HEPA filter screen 30 in this embodiment is made of composite PP-PET, and primarily purifies the air to be purified.
Preferably, the graphene-TiO in the present embodiment 2 The preparation method of the coating comprises the following steps:
preparing graphite oxide into a solution with the concentration of 1mg/ml, and performing ultrasonic treatment for 1h; the catalytic efficiency of the material under the condition of visible light can be improved by adding glucose, which is beneficial to graphene-TiO 2 Purifying air by the paint;
step two, taking 150ml of the solution, weighing 1.2g of titanium sulfate and 60mg of glucose to dissolve in the solution, and performing magnetic stirring for 12 hours after ultrasonic treatment for 1.3 hours, wherein the rotating speed of a magnetic stirrer is 1500r/min;
transferring the stirred solution into a hydrothermal reaction kettle, placing the hydrothermal reaction kettle in an oven, keeping the temperature constant for 10 hours, drying the hydrothermal reaction kettle, controlling the temperature to 150 ℃, slowly heating the hydrothermal reaction kettle to 500 ℃ in a muffle furnace after drying, and keeping the temperature constant for 2 hours; the hydrothermal reaction kettle in the embodiment adopts a stainless steel water thermal reaction kettle;
step four, naturally cooling to room temperature to obtain graphene-TiO 2 Packing, grinding for standby;
adding water, water glass, tributyl phosphate and propylene glycol butyl ether into a flask, fully stirring, adding the ground powder, and magnetically stirring for 0.4h to obtain hydrocolloid; wherein, the water glass is used as a dispersing agent to facilitate the subsequent graphene-TiO 2 The coating disintegrates and prevents it from re-agglomerating, thus keeping the dispersion stable; tributyl phosphate is used as a defoaming agent to inhibit foam generation and ensure the quality of the subsequently prepared coating; propylene glycol butylThe ether is taken as a film forming auxiliary agent, improves the coalescence property and is convenient for graphene-TiO 2 Spraying a coating;
step six, adding lithopone prepared by mixing 30% zinc sulfide and 70% barium sulfate by mass percent, and stirring at a high speed for 0.5h; wherein. Lithopone is added with graphene-TiO 2 The adhesive force of the coating is convenient for the graphene-TiO 2 The paint is sprayed on the paint film;
step seven, adding acrylic emulsion and uniformly stirring, wherein the acrylic emulsion is a film forming substance, which is favorable for graphene-TiO 2 Preparing a coating, and then adding a neutralizing agent such as dilute hydrochloric acid or dilute ammonia water to enable the pH value to reach 8, wherein the addition of the neutralizing agent can effectively improve the storage performance of the material by controlling the pH;
step eight, adding diatomite and diacetone alcohol, uniformly stirring, and aging to obtain graphene-TiO 2 A coating; wherein diatomite is used as a thickener to improve graphene-TiO 2 The paint storage stability; diacetone alcohol is used as a leveling agent to promote graphene-TiO 2 The film forming of the coating is flat, smooth and uniform, and is convenient for graphene-TiO 2 The paint purifies the air;
step nine, preparing the prepared graphene-TiO 2 The paint is uniformly smeared on the surface of the paint film, and the sealing storage is carried out.
graphene-TiO prepared by the method 2 Compared with the photocatalyst in the prior art, the thermal stability of the crystallization of the coating is greatly improved, and the cracking caused by the drying of the coating in the long-term use process is avoided, so that the photocatalytic efficiency is influenced. The paint in the embodiment can effectively inhibit the recombination of photo-generated carriers, prolong the spectrum response range, degrade volatile organic matters under the condition of visible light, and has the advantages of short purification time, high efficiency and capability of avoiding the generation of secondary polluted ozone.
In addition, in order to reduce noise generated when the axial flow fan 50 works, a vibration/noise reduction mechanism 40 is arranged outside the axial flow fan 50, and preferably, the vibration/noise reduction mechanism 40 in the embodiment adopts a foam vibration/noise reduction plate, so that vibration/noise reduction can be realized, production cost is reduced, the foam vibration/noise reduction plate is in the prior art, and the foam vibration/noise reduction plate can be purchased from the market. The material used for the housing 12 and the air supply duct 70 of the air cleaner in this embodiment is galvanized steel sheet, and the metal support net 60 is copper.
In this embodiment, in order to facilitate replacement of the paint film after the air purifier is used for a period of time, the air outlet 90 at the top of the housing 10 is in a detachable structure, so that the metal support net 60, the air supply duct 70 and the support column 81 can be conveniently taken out from the housing 10.
In this embodiment, a hook 73 is disposed at a contact position between the air supply duct 70 and the metal support net 60, the hook 73 is not specifically shown in the drawing, the hook 73 is hooked on the metal support net 60, the metal support net 60 is fixed on the air supply duct 70, and the structural design is convenient for separating and disassembling the metal support net 60 from the air supply duct 70.
Example 5
graphene-TiO of the present embodiment 2 A photocatalytic air purifier substantially identical to example 4, except that: graphene-TiO in the present embodiment 2 The preparation method of the coating comprises the following steps:
preparing graphite oxide into a solution with the concentration of 1mg/ml, and performing ultrasonic treatment for 1.2 hours;
it should be noted that, the graphite oxide in this embodiment is graphite oxide prepared by Hummers method, and the specific process flow is as follows: and (3) a 250mL reaction bottle is assembled in an ice water bath, a proper amount of concentrated sulfuric acid is added, a solid mixture of 2g of graphite powder and 1g of sodium nitrate is added under stirring, 6g of potassium permanganate is added for a plurality of times, the reaction temperature is controlled to be not higher than 20 ℃, stirring is carried out for a period of time, then the temperature is raised to about 35 ℃, stirring is continued for 30min, a proper amount of deionized water is slowly added, and a proper amount of hydrogen peroxide is added to reduce residual oxidant after stirring for 20min, so that the solution turns into bright yellow. Filtered while hot and washed with 5% hcl solution and deionized water until no sulfate is detected in the filtrate. And finally, placing the filter cake in a vacuum drying oven at 60 ℃ for full drying and preserving for standby.
Step two, taking 180ml of the solution, weighing 1.2g of titanium sulfate and 60mg of glucose to dissolve in the solution, and magnetically stirring for 15 hours after ultrasonic treatment for 1.5 hours;
transferring the stirred solution into a hydrothermal reaction kettle, placing the hydrothermal reaction kettle in an oven, keeping the temperature constant for 10 hours, drying the hydrothermal reaction kettle, controlling the temperature to 150 ℃, slowly heating the hydrothermal reaction kettle to 450 ℃ in a muffle furnace after drying, and keeping the temperature constant for 2.3 hours;
step four, naturally cooling to room temperature to obtain graphene-TiO 2 Packing, grinding for standby;
adding water, water glass, tributyl phosphate and propylene glycol butyl ether into a flask, fully stirring, adding the ground powder, and magnetically stirring for 0.5h to obtain hydrocolloid;
step six, adding lithopone prepared by mixing 30% zinc sulfide and 70% barium sulfate by mass percent, and stirring at a high speed for 0.5h;
step seven, adding acrylic emulsion and uniformly stirring, wherein the acrylic emulsion is a film forming substance, which is favorable for graphene-TiO 2 Preparing a coating, and then adding dilute ammonia water as a neutralizer to enable the pH value to reach 8;
step eight, adding diatomite and diacetone alcohol, uniformly stirring, and aging to obtain graphene-TiO 2 A coating;
step nine, preparing the prepared graphene-TiO 2 The paint is uniformly smeared on the surface of the paint film, and the sealing storage is carried out.
Example 6
graphene-TiO of the present embodiment 2 A photocatalytic air purifier substantially identical to example 4, except that: graphene-TiO in the present embodiment 2 The preparation method of the coating comprises the following steps:
preparing graphite oxide into a solution with the concentration of 1mg/ml, and performing ultrasonic treatment for 1.2 hours;
step two, 200ml of the solution is taken, 1.2g of titanium sulfate and 60mg of glucose are weighed and dissolved in the solution, and after ultrasonic treatment is carried out for 1.8 hours, magnetic stirring is carried out for 16 hours;
transferring the stirred solution into a hydrothermal reaction kettle, placing the hydrothermal reaction kettle in an oven, keeping the temperature constant for 10 hours, drying the hydrothermal reaction kettle, controlling the temperature to 170 ℃, slowly heating the hydrothermal reaction kettle to 400 ℃ in a muffle furnace after drying, and keeping the temperature constant for 2 hours;
step four, naturally cooling to room temperature to obtain graphene-TiO 2 Packing, grinding for standby;
adding water, water glass, tributyl phosphate and propylene glycol butyl ether into a flask, fully stirring, adding the ground powder, and magnetically stirring for 0.8h to obtain hydrocolloid;
step six, adding lithopone prepared by mixing 30% zinc sulfide and 70% barium sulfate by mass percent, and stirring at a high speed for 0.8h;
step seven, adding acrylic emulsion and uniformly stirring, wherein the acrylic emulsion is a film forming substance, which is favorable for graphene-TiO 2 Preparing a coating, and then adding dilute ammonia water as a neutralizer to enable the pH value to reach 8;
step eight, adding diatomite and diacetone alcohol, uniformly stirring, and aging to obtain graphene-TiO 2 A coating;
step nine, preparing the prepared graphene-TiO 2 The paint is uniformly smeared on the surface of the paint film, and the sealing storage is carried out.
The invention and its embodiments have been described above by way of illustration and not limitation, and the invention is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present invention.
Claims (10)
1. graphene-TiO 2 The photocatalysis air purifier is characterized in that: the solar energy battery comprises a visible light source (11) and a metal supporting net (60) which are arranged in a shell (10), wherein the metal supporting net (60) is arranged in parallel along the height direction of the shell (10), at least three metal supporting nets are arranged, the interior of the shell (10) is divided into a plurality of interlayers, and each interlayer is provided with the visible light source (11) and graphene-TiO 2 A coating; the middle part of the shell (10) is provided with a truncated cone-shaped air supply duct (70) penetrating through the metal supporting net (60) along the height direction; the air supply duct (70)The upper end is closed, the lower end is a through hole, the air supply duct (70) is provided with a plurality of annular air outlets (72) along the height direction, each annular air outlet (72) is communicated with a corresponding interlayer, and the annular air outlets (72) send air into the corresponding interlayer in an equal amount.
2. A graphene-TiO according to claim 1 2 The photocatalysis air purifier is characterized in that: and the included angle between the bus and the bottom surface of the air supply duct (70) is arctan6.67.
3. A graphene-TiO according to claim 2 2 The photocatalysis air purifier is characterized in that: the diameter of the upper end face of the air supply duct (70) is 50mm, the diameter of the lower end face is 200mm, and the height is 500mm.
4. A graphene-TiO according to claim 3 2 The photocatalysis air purifier is characterized in that: the number of the annular air outlets (72) is 3, the width of the annular air outlets (72) is 20mm, and the opening positions of the annular air outlets are respectively positioned at 100mm, 250mm and 400mm in the height direction of the air supply duct (70); the number of the metal support nets (60) is 4, wherein the first metal support net (60) which is positioned in the shell (10) from top to bottom is parallel to the upper end of the air supply duct (70).
5. A graphene-TiO according to claim 1 or 4 2 The photocatalysis air purifier is characterized in that: the air supply duct (70) is provided with at least 3 support columns (81) at equal intervals along the circumferential direction of the air supply duct, each support column (81) vertically penetrates through the metal support net (60), a cylindrical carrier (82) is arranged on the support column (81) positioned in each interlayer, and the surface of the cylindrical carrier (82) is provided with graphene-TiO 2 And (3) coating.
6. A graphene-TiO according to claim 5 2 The photocatalysis air purifier is characterized in that: the graphene-TiO 2 The paint is sprayed on a paint film which is adhered to the cylinderThe surface of the shaped carrier (82) and/or the inner wall of the barrier layer.
7. A graphene-TiO according to claim 1 2 The photocatalysis air purifier is characterized in that: the metal supporting net (60) is loaded with a honeycomb activated carbon adsorption material.
8. A graphene-TiO according to claim 1 2 The photocatalysis air purifier is characterized in that: the visible light source (11) is an LED lamp, and the LED lamp is arranged on the inner wall of each interlayer.
9. A graphene-TiO according to claim 1 2 The photocatalysis air purifier is characterized in that: an air inlet (20) is formed in the bottom of the shell (10), and a HEPA filter screen (30) is arranged between the air inlet (20) and the axial flow fan (50); the top of the shell (10) is provided with an air outlet (90).
10. A graphene-TiO according to claim 1 2 The photocatalysis air purifier is characterized in that: the graphene-TiO 2 The preparation method of the coating comprises the following steps:
firstly, preparing graphite oxide into a solution with the concentration of 1mg/ml, and performing ultrasonic treatment for 1-1.5 hours;
step two, weighing 150ml-200ml of the solution, weighing 1.2g of titanium sulfate and 60mg of glucose to dissolve in the solution, performing ultrasonic treatment for 1.3-1.8h, and magnetically stirring for 12-16h;
transferring the stirred solution into a hydrothermal reaction kettle, placing the hydrothermal reaction kettle into an oven, controlling the temperature to be 130-170 ℃, keeping the temperature for 10 hours, drying, slowly heating to 400-500 ℃ in a muffle furnace, and keeping the temperature for 2-2.5 hours;
step four, naturally cooling to room temperature, and grinding for later use;
adding water, water glass, tributyl phosphate and propylene glycol butyl ether into a flask, fully stirring, adding the ground powder, and magnetically stirring for 0.4-0.8h;
step six, adding lithopone prepared by mixing 30% zinc sulfide and 70% barium sulfate by mass percent, and stirring for 0.5h;
step seven, adding an acrylic emulsion, and then adding a neutralizing agent to enable the pH value to reach 8;
step eight, adding diatomite and diacetone alcohol, uniformly stirring, and aging to obtain graphene-TiO 2 And (3) coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910279714.3A CN110038425B (en) | 2019-04-09 | 2019-04-09 | graphene-TiO 2 Photocatalytic air purifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910279714.3A CN110038425B (en) | 2019-04-09 | 2019-04-09 | graphene-TiO 2 Photocatalytic air purifier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110038425A CN110038425A (en) | 2019-07-23 |
| CN110038425B true CN110038425B (en) | 2024-03-19 |
Family
ID=67276575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910279714.3A Active CN110038425B (en) | 2019-04-09 | 2019-04-09 | graphene-TiO 2 Photocatalytic air purifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110038425B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110332631A (en) * | 2019-08-09 | 2019-10-15 | 重庆工商大学 | A kind of novel photocatalyst air purifier |
| WO2022008380A2 (en) * | 2020-07-06 | 2022-01-13 | Nualight Limited | An air sanitizer |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101138693A (en) * | 2006-09-04 | 2008-03-12 | 中芯国际集成电路制造(上海)有限公司 | Gas filter |
| CN104964356A (en) * | 2015-06-07 | 2015-10-07 | 深圳市沃森空调技术有限公司 | Flight air conditioner |
| CN205323423U (en) * | 2015-12-21 | 2016-06-22 | 华中科技大学 | Air purifying device |
| CN107281935A (en) * | 2017-06-26 | 2017-10-24 | 江阴市天邦光催化研究所有限公司 | Visible light photocatalysis air cleaning filter |
| CN107349735A (en) * | 2017-08-23 | 2017-11-17 | 黄得锋 | A kind of clarifier and purification method |
| CN108786751A (en) * | 2018-07-12 | 2018-11-13 | 山东佳星环保科技有限公司 | Graphene high-efficiency filtering material for air purifying and preparation method |
| CN209952596U (en) * | 2019-04-09 | 2020-01-17 | 安徽工业大学 | graphene-TiO2Photocatalytic air purifier |
-
2019
- 2019-04-09 CN CN201910279714.3A patent/CN110038425B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101138693A (en) * | 2006-09-04 | 2008-03-12 | 中芯国际集成电路制造(上海)有限公司 | Gas filter |
| CN104964356A (en) * | 2015-06-07 | 2015-10-07 | 深圳市沃森空调技术有限公司 | Flight air conditioner |
| CN205323423U (en) * | 2015-12-21 | 2016-06-22 | 华中科技大学 | Air purifying device |
| CN107281935A (en) * | 2017-06-26 | 2017-10-24 | 江阴市天邦光催化研究所有限公司 | Visible light photocatalysis air cleaning filter |
| CN107349735A (en) * | 2017-08-23 | 2017-11-17 | 黄得锋 | A kind of clarifier and purification method |
| CN108786751A (en) * | 2018-07-12 | 2018-11-13 | 山东佳星环保科技有限公司 | Graphene high-efficiency filtering material for air purifying and preparation method |
| CN209952596U (en) * | 2019-04-09 | 2020-01-17 | 安徽工业大学 | graphene-TiO2Photocatalytic air purifier |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110038425A (en) | 2019-07-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103982949B (en) | The dual-purpose new wind air cleaner of anti-PM2.5 with ozone removal device | |
| CN203642363U (en) | Multifunctional photochemical air purifying equipment | |
| CN202294172U (en) | Vehicle-mounted sky-light window air purifying device | |
| CN104645824B (en) | A kind of activated carbon buffering photo catalysis reactor | |
| CN201684212U (en) | Air sterilization purifier | |
| CN206037266U (en) | Photocatalytic air purification device | |
| CN206778161U (en) | A kind of fitting space air purifying device of automatic control transfusion | |
| CN101590403A (en) | Multifunctional coupling catalyst and preparation method thereof | |
| CN101371929A (en) | Photocatalysis air purifier using light emitting diode as light source | |
| CN201676640U (en) | Fan-blade photocatalysis phase-transfer air purifier | |
| CN110038425B (en) | graphene-TiO 2 Photocatalytic air purifier | |
| CN207871879U (en) | A kind of industry deodorization purifier | |
| CN203886413U (en) | Fluidized TiO2 photo-catalytic oxidation type air purifier | |
| CN104296251A (en) | Rotating wheel type photocatalysis air purification device applied indoors | |
| CN107376576A (en) | A kind of waste gas purification apparatus for amino acid fermentation workshop | |
| CN204469543U (en) | A kind of active carbon buffering photo catalysis reactor | |
| CN107314456A (en) | Can highly effectively removing volatile organic gas vertical indoor air cleaner | |
| CN105258233B (en) | Air purifier | |
| CN209952596U (en) | graphene-TiO2Photocatalytic air purifier | |
| CN112316679B (en) | Low-temperature plasma VOCs purification device and method | |
| CN206082107U (en) | Industry organic waste gas purification device | |
| CN204159209U (en) | A kind of novel tubular photocatalysis air cleaning device | |
| CN207042249U (en) | The device of photocatalysis treatment volatile organic matter | |
| CN101380569B (en) | Preparation method of three-dimensional ordered macropore carbon loaded with titanium dioxide particles and application method thereof | |
| CN110193337A (en) | A kind of photochemical catalyst fiber felt fixed-bed type Photoreactor and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |