CN108579746A - A kind of preparation method and applications of zinc oxide/silver oxide composite photo-catalyst - Google Patents
A kind of preparation method and applications of zinc oxide/silver oxide composite photo-catalyst Download PDFInfo
- Publication number
- CN108579746A CN108579746A CN201810353224.9A CN201810353224A CN108579746A CN 108579746 A CN108579746 A CN 108579746A CN 201810353224 A CN201810353224 A CN 201810353224A CN 108579746 A CN108579746 A CN 108579746A
- Authority
- CN
- China
- Prior art keywords
- zinc oxide
- catalyst
- silver
- composite photo
- preparation
- 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.)
- Granted
Links
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 title claims abstract description 170
- 239000011787 zinc oxide Substances 0.000 title claims abstract description 85
- NDVLTYZPCACLMA-UHFFFAOYSA-N silver oxide Chemical compound [O-2].[Ag+].[Ag+] NDVLTYZPCACLMA-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 239000002131 composite material Substances 0.000 title claims abstract description 36
- 239000011941 photocatalyst Substances 0.000 title claims abstract description 35
- 238000002360 preparation method Methods 0.000 title claims abstract description 29
- 229910001923 silver oxide Inorganic materials 0.000 title claims abstract description 20
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims abstract description 85
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 39
- 230000003647 oxidation Effects 0.000 claims abstract description 22
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 22
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000013019 agitation Methods 0.000 claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 230000015556 catabolic process Effects 0.000 claims abstract description 10
- 238000006731 degradation reaction Methods 0.000 claims abstract description 10
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000007791 liquid phase Substances 0.000 claims abstract description 5
- 238000000975 co-precipitation Methods 0.000 claims abstract description 4
- 229910001961 silver nitrate Inorganic materials 0.000 claims abstract description 4
- 238000011068 loading method Methods 0.000 claims abstract description 3
- 239000000243 solution Substances 0.000 claims description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 28
- 239000008367 deionised water Substances 0.000 claims description 20
- 229910021641 deionized water Inorganic materials 0.000 claims description 20
- 239000002105 nanoparticle Substances 0.000 claims description 13
- 238000001035 drying Methods 0.000 claims description 11
- 229920002594 Polyethylene Glycol 8000 Polymers 0.000 claims description 10
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 238000001291 vacuum drying Methods 0.000 claims description 6
- 101710134784 Agnoprotein Proteins 0.000 claims description 5
- 239000007864 aqueous solution Substances 0.000 claims description 5
- 239000011259 mixed solution Substances 0.000 claims description 5
- 238000010992 reflux Methods 0.000 claims description 5
- XIOUDVJTOYVRTB-UHFFFAOYSA-N 1-(1-adamantyl)-3-aminothiourea Chemical compound C1C(C2)CC3CC2CC1(NC(=S)NN)C3 XIOUDVJTOYVRTB-UHFFFAOYSA-N 0.000 claims description 4
- 238000000151 deposition Methods 0.000 claims description 4
- 230000008021 deposition Effects 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 3
- 238000001354 calcination Methods 0.000 claims description 2
- ZDYUUBIMAGBMPY-UHFFFAOYSA-N oxalic acid;hydrate Chemical class O.OC(=O)C(O)=O ZDYUUBIMAGBMPY-UHFFFAOYSA-N 0.000 claims description 2
- 241001614291 Anoplistes Species 0.000 claims 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims 1
- 229910052708 sodium Inorganic materials 0.000 claims 1
- 239000011734 sodium Substances 0.000 claims 1
- AGGKEGLBGGJEBZ-UHFFFAOYSA-N tetramethylenedisulfotetramine Chemical compound C1N(S2(=O)=O)CN3S(=O)(=O)N1CN2C3 AGGKEGLBGGJEBZ-UHFFFAOYSA-N 0.000 claims 1
- 230000001699 photocatalysis Effects 0.000 abstract description 14
- 238000000034 method Methods 0.000 abstract description 13
- 238000006555 catalytic reaction Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 7
- 238000002156 mixing Methods 0.000 abstract description 3
- 238000003837 high-temperature calcination Methods 0.000 abstract description 2
- 229910052709 silver Inorganic materials 0.000 abstract description 2
- 239000004332 silver Substances 0.000 abstract description 2
- 235000019256 formaldehyde Nutrition 0.000 description 21
- YRKCREAYFQTBPV-UHFFFAOYSA-N acetylacetone Chemical compound CC(=O)CC(C)=O YRKCREAYFQTBPV-UHFFFAOYSA-N 0.000 description 18
- 238000005070 sampling Methods 0.000 description 16
- 239000003708 ampul Substances 0.000 description 12
- 239000010453 quartz Substances 0.000 description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 12
- 238000002835 absorbance Methods 0.000 description 9
- 239000003054 catalyst Substances 0.000 description 8
- 239000011701 zinc Substances 0.000 description 7
- 229910052725 zinc Inorganic materials 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000007146 photocatalysis Methods 0.000 description 6
- 239000004065 semiconductor Substances 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 206010013786 Dry skin Diseases 0.000 description 4
- 229930040373 Paraformaldehyde Natural products 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229920002866 paraformaldehyde Polymers 0.000 description 4
- 229910000108 silver(I,III) oxide Inorganic materials 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- RLXDCJUIXHSXQD-UHFFFAOYSA-N oxalic acid;hydrate Chemical compound O.OC(=O)C(O)=O.OC(=O)C(O)=O RLXDCJUIXHSXQD-UHFFFAOYSA-N 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 238000013032 photocatalytic reaction Methods 0.000 description 3
- 238000005215 recombination Methods 0.000 description 3
- 239000003643 water by type Substances 0.000 description 3
- JGPSMWXKRPZZRG-UHFFFAOYSA-N zinc;dinitrate;hexahydrate Chemical class O.O.O.O.O.O.[Zn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O JGPSMWXKRPZZRG-UHFFFAOYSA-N 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- -1 as printing Substances 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 2
- 230000006798 recombination Effects 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 241000533950 Leucojum Species 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 238000001467 acupuncture Methods 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000003317 industrial substance Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 125000000325 methylidene group Chemical group [H]C([H])=* 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000000280 vitalizing effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/03—Precipitation; Co-precipitation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/06—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of zinc, cadmium or mercury
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/48—Silver or gold
- B01J23/50—Silver
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/66—Silver or gold
-
- B01J35/19—
-
- B01J35/39—
-
- B01J35/40—
-
- B01J35/60—
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/04—Mixing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/08—Heat treatment
- B01J37/082—Decomposition and pyrolysis
- B01J37/088—Decomposition of a metal salt
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/34—Organic compounds containing oxygen
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
Abstract
The invention discloses a kind of preparation method and applications of zinc oxide/silver oxide composite photo-catalyst, zinc-base predecessor is prepared using liquid-phase coprecipitation first, porous spongy zinc oxide is prepared through high-temperature calcination, again using silver nitrate as presoma, sodium hydroxide is added to react under the conditions of the alkaline environment of pH=13, through being dried to obtain oxidation silver nano-grain, obtained porous spongy zinc oxide and oxidation Nano silver grain are further passed through into the physical mixing processes such as magnetic agitation under alkaline condition, obtain loading the composite photo-catalyst of oxidation Nano silver grain in zinc oxide surface.ZnO/Ag prepared by the present invention2O composite materials have many advantages, such as that large specific surface area, light-catalyzed reaction active site are high, can be used for formaldehyde degradation by photocatalytic oxidation process liquid under visible light.
Description
Technical field
The invention belongs to catalyst fields, and in particular to a kind of preparation method of zinc oxide/silver oxide composite photo-catalyst
And its application.
Background technology
In recent years, formaldehyde is widely used in various industries as a kind of main industrial chemicals, as printing, pesticide, building
The fields such as material, sewer, lake river can be discharged into a large amount of untreated industrial wastewaters by producing the factory of these products
Stream etc., the formaldehyde being dissolved in water also flows into wherein therewith, is directly caused sternly to aquatic products industry, human lives' water and agricultural irrigation
It endangers again, not only seriously affects the health of the mankind, but also also constitute greatly threat to ecological environment.Tradition is except formaldehyde
Method has physical absorption, biological cleaning, membrane separation technique etc., but these methods are all temporary formaldehyde adsorption, there is no from
Formaldehyde is fundamentally removed, and secondary pollution can be caused.And Photocatalitic Technique of Semiconductor is exactly such a has been completely removed
The method of machine pollutant in the electron transition to conduction band in vitalizing semiconductor valence band, and leaves sky in valence band under light illumination
Cave, light induced electron and hole can by the water of surrounding and dioxygen oxidation at higher oxidation susceptibility hydroxyl radical free radical and super oxygen from
By base, these free radicals can generate carbon dioxide and water, so photocatalysis can be used directly organic pollution oxygenolysis
Technology inherently removes formaldehyde.Wherein zinc oxide（ZnO）It is a kind of one of most common photocatalytic semiconductor, forbidden band under room temperature
Width is 3.37 eV, has the characteristics that thermal stability and chemical stability is good, abundance, cheap, nontoxic, be current
One of the widest semiconductor of development and application, be widely used in sewage disposal, air purification, sensor, solar cell,
Gas sensing property detection etc..
But semiconductor light-catalyst is in the photocatalytic process, the high recombination rate in light induced electron and hole is that semiconductor light is urged
One of major defect existing for change technology, zinc oxide is certainly no exception, in addition to this, since light-catalyzed reaction occurs mainly in
The contact surface of catalyst and organic pollution, thus the size of ZnO photocatalysis performances have with the appearance structure of itself it is prodigious
Relationship.Existing researchers have prepared the ZnO of various appearance structures, as hexagonal prisms club shaped structure, snowflake laminated structure, acupuncture needle
The ZnO of linear structure but these patterns often has smaller specific surface area, influences the photocatalysis efficiency of ZnO, and cannot be
Light-catalyzed reaction provides more active reaction sites.In addition to this, the energy gap of zinc oxide is bigger, and most of photocatalysis is anti-
It can only should under ultraviolet light carry out.Therefore, the specific surface area for increasing ZnO how is realized, the activity increased in light-catalyzed reaction is anti-
It answers site, how the light-catalyzed reaction of zinc oxide is extended to visible light region, improves the utilization to solar energy, how will oxidation
The light-catalyzed reaction of zinc and the light induced electron and hole-recombination rate for inhibiting ZnO, be improve ZnO photocatalytic activities requirement it
One.
Invention content
It is an object of the invention in view of the shortcomings of the prior art, providing a kind of with high catalytic activity and under visible light
The preparation method of the zinc oxide of degradation of formaldehyde/silver oxide composite photo-catalyst.
To achieve the above object, the present invention adopts the following technical scheme that：
A kind of preparation method of zinc oxide/silver oxide composite photo-catalyst, prepares zinc-base forerunner using liquid-phase coprecipitation first
Object prepares porous spongy zinc oxide through calcining；Again using silver nitrate as presoma, sodium hydroxide is further added in pH=13
It is reacted under environment, oxidation Nano silver grain is obtained after washing is dry；Finally by porous spongy zinc oxide and oxidation nano grain of silver
Son passes through physical mixed under alkaline condition, obtains zinc oxide/silver oxide that oxidation Nano silver grain is loaded in zinc oxide surface
Composite photo-catalyst；Specifically include following steps：
（1）The preparation of porous spongy ZnO：It weighs zinc nitrate hexahydrate to be dissolved in deionized water, be added dropwise containing six methylenes
The aqueous solution of urotropine and two oxalic acid hydrates,（The molar ratio of zinc nitrate hexahydrate and hexa is 1:1-1:8）, go forward side by side
Row magnetic agitation, makes it fully dissolve；By mixed solution condensing reflux 2-6 hours in 70-90 DEG C of oil bath, it is heavy to obtain white
Starch after being washed with deionized, is put in vacuum drying chamber and obtains zinc oxide afterwards for 24 hours in 50 DEG C of dryings；Again by gained oxygen
Change zinc to be positioned in Muffle furnace, be calcined 2-6 hours at 300-600 DEG C in air atmosphere, obtains porous spongy ZnO productions
Object；
（2）Ag2The preparation of O nano-particles：AgNO is weighed respectively3It is added sequentially in deionized water with PEG-8000, magnetic force stirs
10 min are mixed, the NaOH solution of a concentration of 0.1mol/L is slowly added dropwise, make pH=13, stops being added dropwise, finally be washed with deionized water
It washs, freeze-day with constant temperature（60-90 DEG C of drying temperature, drying time 2h）, obtain Ag2O nano-particles；
（3）ZnO/Ag2The preparation of O composite photo-catalysts：Step is weighed first（1）Porous spongy ZnO obtained, what is be put into goes
In ionized water, and the PEG-8000, ultrasonic vibration 10min being added to the solution；Then step is weighed（2）Ag obtained2O nanometers
Particle is put into above-mentioned mixed liquor, and magnetic agitation 30-60min, is slowly dropped into the NaOH solution of a concentration of 0.1mol/L, is made pH
=13-14 stops being added dropwise, after deionized water is washed, freeze-day with constant temperature（60-90 DEG C of drying temperature, drying time 2h）To get
To the ZnO/Ag for loading oxidation Nano silver grain in zinc oxide surface2O composite photo-catalysts.
Zinc oxide/silver oxide composite photo-catalyst made from preparation method as described above declines retired for visible light
Aldehyde, detailed process are：Take 60-80mg ZnO/Ag2It is a concentration of to measure 100-150 mL in quartz ampoule for O composite photo-catalysts
The formalin of 10-20 mg/L is poured into quartz ampoule, and quartz ampoule is put into photocatalytic reaction device and is carried out in the dark magnetic force and stirs
It mixes, carries out sampling 4 mL after 30 min are secretly adsorbed under the conditions of being protected from light, visible lamp PARA FORMALDEHYDE PRILLS(91,95) solution is opened after sampling and carries out 120
The light of min irradiates, and when light application time reaches 15 min, 30 min, 60 min, 90 min, 120 min separately sampled 4
ML, all sampling solution are immediately placed in shading in 5 mL centrifuge tubes and seal after sampling, and 2.5 mL reaction solutions are taken before test
Have in plug graded tube in 25 mL, deionized water is added into graded tube and is diluted to after graduation mark that 2.5 mL are added is configured good
Acetylacetone,2,4-pentanedione mixed liquor measures the absorbance of formalin with ultravioletvisible absorption optical detector.
Zinc-base complex salt is formed using simple liquid-phase coprecipitation in the present invention, and makes complex salt by high-temperature calcination
In gas escape the zinc oxide to form porous structure, prepare the ZnO of mandruka structure, this structure is largely
The contact area for increasing catalyst and formalin increases the reactivity site of light-catalyzed reaction.It is molten in silver nitrate again
Sodium hydroxide is added in liquid, is fully reacted in the alkaline environment of pH=13 of formation, Ag is dried to obtain by washing2O nanoparticles
Son；Obtained porous zinc bloom and oxidation Nano silver grain are passed through into the physical mixing processes such as magnetic agitation under alkaline condition,
The zinc oxide composite photocatalyst of area load oxidation Nano silver grain is finally obtained, nano silver particles can not only capture photoproduction
Electronics inhibits the recombination rate of light induced electron and hole, to substantially increase photocatalysis efficiency.And the energy gap ratio of itself
It is relatively narrow, to make the composite photo-catalyst energy gap to be formed reduce, light-catalyzed reaction is extended to visible light region, for
Liquid formaldehyde of degrading under visible light has prodigious application value, can partly be led with the high catalytic activity of degradation liquid formaldehyde for exploitation
Body material lays the first stone.
The beneficial effects of the present invention are：Compared with traditional zinc oxide photocatalysis material, the present invention is coprecipitated using liquid phase
Shallow lake method prepares porous spongy zinc oxide, then passes through porous zinc bloom and oxidation Nano silver grain under alkaline condition simple
Physical mixing processes, finally obtain composite photo-catalyst, have large specific surface area, light-catalyzed reaction activity it is high, can be visible
The advantages that photocatalytic process is carried out under light, after carrying out visible light photocatalytic degradation 90min to indoor formaldehyde liquid, formaldehyde liquid degradation
Rate reaches 100%, and non-secondary pollution can inherently completely remove formaldehyde, is a kind of catalysis material of environment-friendly type, can be used for
Photocatalytic degradation liquid formaldehyde under visible light.
Specific implementation mode
Below in conjunction with specific embodiment, the present invention will be further described, but the present invention is not limited only to these embodiments.
Embodiment 1
（1）The preparation of porous spongy ZnO：It weighs 2.7g zinc nitrate hexahydrates to be dissolved in 20mL deionized waters, dropwise（1 drop/
Second）The aqueous solution 30mL containing bis- oxalic acid hydrate of 2.54g hexas and 0.32g is added, and carries out magnetic agitation, makes it
Fully dissolving；By mixed solution in 80 DEG C of oil bath condensing reflux 4 hours, obtain white depositions, be washed with deionized
After repeatedly, it is put in vacuum drying chamber and obtains zinc oxide afterwards for 24 hours in 50 DEG C of dryings；Gained zinc oxide is positioned over Muffle furnace again
In, it is calcined 4 hours at 300 DEG C in air atmosphere, obtains porous spongy ZnO products；
（2）Ag2The preparation of O nano-particles：1.7g AgNO are weighed respectively3It is added sequentially to 100mL with 0.1g PEG-8000
In ionized water, the NaOH solution of a concentration of 0.1mol/L is slowly added dropwise in 10 min of magnetic agitation, makes pH=13, stops being added dropwise, most
After be washed with deionized several times, 90 DEG C of freeze-day with constant temperature 2h, obtain Ag in air2O nano-particles；
（3）ZnO/Ag2The preparation of O composite photo-catalysts：0.4g steps are weighed first（1）Porous spongy ZnO obtained, is put into
In the deionized water of 100mL, and to the solution be added 1g PEG-8000, ultrasonic vibration 10min；Then 0.057g steps are weighed
（2）Ag obtained2O nano-particles are put into above-mentioned mixed liquor, and magnetic agitation 30min, are slowly dropped into a concentration of 0.1mol/L
NaOH solution, make pH=13, stop being added dropwise, after deionized water is washed, 2h are dried to get in oxygen in 90 DEG C of constant temperature ovens
Change the ZnO/Ag of zinc surface load oxidation Nano silver grain2O composite photo-catalysts.
ZnO/Ag2The performance test of O composite photo-catalyst Visible Light Induced Photocatalytic liquid formaldehydes：Take 80mg ZnO/Ag2O complex lights
Catalyst in quartz ampoule, pour into quartz ampoule, and quartz ampoule is put into light by the formalin for measuring a concentration of 10 mg/L of 150 mL
It is carried out in the dark magnetic agitation in catalyst reaction device, carries out sampling 4 mL after 30 min are secretly adsorbed under the conditions of being protected from light, be opened after sampling
Open visible lamp PARA FORMALDEHYDE PRILLS(91,95) solution carry out 120 min light irradiation, and light application time reach 15 min, 30 min, 60 min,
Separately sampled 4 mL when 90 min, 120 min, all sampling solution are immediately placed in shading in 5 mL centrifuge tubes after sampling
Sealing configures a series of formalin of various concentrations before test sample, its absorbance surveyed with acetylacetone method, by concentration and measures
Absorbance data draws standard curve, takes 2.5 mL reaction solutions to have in plug graded tube in 25 mL after test, is added into graded tube
The configured good acetylacetone,2,4-pentanedione mixed liquors of 2.5 mL are added after being diluted to graduation mark in deionized water, with ultravioletvisible absorption light detection
Instrument measures the absorbance of formalin, and absorbance in different time periods is substituted into the concentration that standard curve calculates formaldehyde, is calculated
The Degradation Formaldehyde rate of different moments, degradation rate can reach 100% after 90min.
Embodiment 2
（1）The preparation of porous spongy ZnO：It weighs 2.7g zinc nitrate hexahydrates to be dissolved in 20mL deionized waters, dropwise（1 drop/
Second）The aqueous solution 30mL containing bis- oxalic acid hydrate of 5.09g hexas and 0.3g is added, and carries out magnetic agitation, makes it
Fully dissolving；By mixed solution in 90 DEG C of oil bath condensing reflux 4 hours, obtain white depositions, be washed with deionized
After repeatedly, it is put in vacuum drying chamber and obtains zinc oxide afterwards for 24 hours in 50 DEG C of dryings；Gained zinc oxide is positioned over Muffle furnace again
In, it is calcined 4 hours at 400 DEG C in air atmosphere, obtains porous spongy ZnO products；
（2）Ag2The preparation of O nano-particles：1.7g AgNO are weighed respectively3It is added sequentially to 100mL with 0.1g PEG-8000
In ionized water, the NaOH solution of a concentration of 0.1mol/L is slowly added dropwise in 10 min of magnetic agitation, makes pH=13, stops being added dropwise, most
After be washed with deionized, 90 DEG C of freeze-day with constant temperature 2h, obtain Ag in air2O nano-particles；
（3）ZnO/Ag2The preparation of O composite photo-catalysts：0.4g steps are weighed first（1）Porous spongy ZnO obtained, is put into
In the deionized water of 100mL, and to the solution be added 1g PEG-8000, ultrasonic vibration 10min；Then 0.113g steps are weighed
（2）Ag obtained2O nano-particles are put into above-mentioned mixed liquor, and magnetic agitation 30min, are slowly dropped into a concentration of 0.1mol/L
NaOH solution, make pH=14, stop being added dropwise, after deionized water is washed, in 90 DEG C of baking oven freeze-day with constant temperature 2h to get in oxygen
Change the ZnO/Ag of zinc surface load oxidation Nano silver grain2O composite photo-catalysts.
ZnO/Ag2The performance test of O composite photo-catalyst light Visible Light Induced Photocatalytic liquid formaldehydes：Take 80mg ZnO/Ag2O is compound
Photochemical catalyst in quartz ampoule, pour into quartz ampoule, and quartz ampoule is put by the formalin for measuring a concentration of 10 mg/L of 150 mL
It is carried out in the dark magnetic agitation in photocatalytic reaction device, carries out sampling 4 mL after 30 min are secretly adsorbed under the conditions of being protected from light, after sampling
It opens visible lamp PARA FORMALDEHYDE PRILLS(91,95) solution and carries out the light irradiation of 120 min, and reach 15 min, 30 min, 60 in light application time
Separately sampled 4 mL when min, 90 min, 120 min, all sampling solution are immediately placed in after sampling in 5 mL centrifuge tubes
Shading seals, and 2.5 mL reaction solutions is taken to have in plug graded tube in 25 mL before test, and deionized water is added into graded tube and is diluted to
The configured good acetylacetone,2,4-pentanedione mixed liquors of 2.5 mL are added after graduation mark, it is water-soluble to measure formaldehyde with ultravioletvisible absorption optical detector
Absorbance in different time periods is substituted into the concentration that standard curve calculates formaldehyde by the absorbance of liquid, calculates the formaldehyde drop of different moments
Solution rate, degradation rate can reach 100% after 90min.
Embodiment 3
（1）The preparation of porous spongy ZnO：It weighs 2.7g zinc nitrate hexahydrates to be dissolved in 20mL deionized waters, dropwise（1 drop/
Second）The aqueous solution 30mL containing bis- oxalic acid hydrate of 5.09g hexas and 0.572g is added, and carries out magnetic agitation, makes
It is fully dissolved；By mixed solution in 90 DEG C of oil bath condensing reflux 4 hours, obtain white depositions, be washed with deionized water
After washing repeatedly, it is put in vacuum drying chamber and obtains zinc oxide afterwards for 24 hours in 50 DEG C of dryings；Gained zinc oxide is positioned over Muffle again
In stove, is calcined 4 hours at 400 DEG C in air atmosphere, obtain porous spongy ZnO products；
（2）Ag2The preparation of O nano-particles：1.7g AgNO are weighed respectively3It is added sequentially to 100mL with 0.1g PEG-8000
In ionized water, the NaOH solution of a concentration of 0.1mol/L is slowly added dropwise in 10 min of magnetic agitation, makes pH=13, stops being added dropwise, most
After be washed with deionized, 90 DEG C of freeze-day with constant temperature 2h, obtain Ag in air2O nano-particles；
（3）ZnO/Ag2The preparation of O composite photo-catalysts：0.4g steps are weighed first（1）Porous spongy ZnO obtained, is put into
In the deionized water of 100mL, and to the solution be added 1g PEG-8000, ultrasonic vibration 10min；Then 0.5683g steps are weighed
Suddenly（2）Ag obtained2O nano-particles are put into above-mentioned mixed liquor, and magnetic agitation 30min, are slowly dropped into a concentration of 0.1mol/
The NaOH solution of L makes pH=13, stops being added dropwise, after deionized water is washed, in 90 DEG C of baking oven freeze-day with constant temperature 2h to get in oxygen
Change the ZnO/Ag of zinc surface load oxidation Nano silver grain2O composite photo-catalysts.
ZnO/Ag2The performance test of O composite photo-catalyst light Visible Light Induced Photocatalytic liquid formaldehydes：Take 80mg ZnO/Ag2O is compound
Photochemical catalyst in quartz ampoule, pour into quartz ampoule, and quartz ampoule is put by the formalin for measuring a concentration of 10 mg/L of 150 mL
It is carried out in the dark magnetic agitation in photocatalytic reaction device, carries out sampling 4 mL after 30 min are secretly adsorbed under the conditions of being protected from light, after sampling
It opens visible lamp PARA FORMALDEHYDE PRILLS(91,95) solution and carries out the light irradiation of 120 min, and reach 15 min, 30 min, 60 in light application time
Separately sampled 4 mL when min, 90 min, 120 min, all sampling solution are immediately placed in 5 mL centrifuge tubes after sampling
Middle shading sealing, takes 2.5 mL reaction solutions to have in plug graded tube in 25 mL before test, deionized water dilution is added into graded tube
The configured good acetylacetone,2,4-pentanedione mixed liquors of 2.5 mL are added after to graduation mark, formalin is measured with ultravioletvisible absorption optical detector
Absorbance in different time periods is substituted into the concentration that standard curve calculates formaldehyde by the absorbance of solution, calculates the formaldehyde of different moments
Degradation rate, degradation rate can reach 100% after 90min.
The foregoing is merely presently preferred embodiments of the present invention, all equivalent changes done according to scope of the present invention patent with
Modification should all belong to the covering scope of the present invention.
Claims (7)
1. a kind of preparation method of zinc oxide/silver oxide composite photo-catalyst, it is characterised in that：Liquid-phase coprecipitation is used first
Zinc-base predecessor is prepared, porous spongy zinc oxide is prepared through calcining；Again using silver nitrate as presoma, hydroxide is further added
Sodium reacts in the environment of pH=13, and oxidation Nano silver grain is obtained after washing is dry；Finally by porous spongy zinc oxide and oxygen
Change Nano silver grain and pass through physical mixed under alkaline condition, obtains the oxidation for loading oxidation Nano silver grain in zinc oxide surface
Zinc/silver oxide composite photo-catalyst.
2. the preparation method of zinc oxide according to claim 1/silver oxide composite photo-catalyst, it is characterised in that：Specifically
Include the following steps：
（1）The preparation of porous spongy zinc oxide：It weighs zinc nitrate hexahydrate to be dissolved in deionized water, be added dropwise containing six Asias
The aqueous solution of tetramine and two oxalic acid hydrates, and magnetic agitation is carried out, so that it is fully dissolved；By mixed solution in 70-90 DEG C
Oil bath in condensing reflux 2-6 hours, obtain white depositions, after being washed with deionized, be put in vacuum drying chamber dry
Obtain zinc oxide afterwards；Gained zinc oxide is positioned in Muffle furnace again, 2-6 is calcined at 300-600 DEG C in air atmosphere
Hour, obtain porous spongy zinc oxide；
（2）Aoxidize the preparation of Nano silver grain：AgNO is weighed respectively3It is added sequentially in deionized water with PEG-8000, magnetic force stirs
10 min are mixed, the NaOH solution of a concentration of 0.1mol/L is slowly added dropwise, make pH=13, stops being added dropwise, finally be washed with deionized water
It washs, freeze-day with constant temperature, obtains oxidation Nano silver grain；
（3）The preparation of zinc oxide/silver oxide composite photo-catalyst：Step is weighed first（1）Porous spongy zinc oxide obtained,
It is put into deionized water, and PEG-8000, ultrasonic vibration 10min is added to the solution；Then step is weighed（2）Oxidation obtained
Nano silver grain is put into above-mentioned mixed liquor, and magnetic agitation 30-60min, the NaOH for being slowly dropped into a concentration of 0.1mol/L are molten
Liquid makes pH=13-14, stops being added dropwise, and after deionized water is washed, freeze-day with constant temperature loads silver oxide to get in zinc oxide surface
The zinc oxide of nano-particle/silver oxide composite photo-catalyst.
3. the preparation method of zinc oxide according to claim 2/silver oxide composite photo-catalyst, it is characterised in that：Step
（1）In, the molar ratio of the zinc nitrate hexahydrate and hexa is 1:1-1:8.
4. the preparation method of zinc oxide according to claim 2/silver oxide composite photo-catalyst, it is characterised in that：Step
（1）In, vacuum drying temperature is 50 DEG C, and drying time is for 24 hours.
5. the preparation method of zinc oxide according to claim 2/silver oxide composite photo-catalyst, it is characterised in that：Step
（2）And step（3）In, the technological parameter of the freeze-day with constant temperature is：60-90 DEG C of drying temperature, drying time 2h.
6. zinc oxide/silver oxide composite photo-catalyst made from a kind of preparation method according to any one of claims 1 to 5.
7. zinc oxide made from the preparation method according to any one of claim 1 ~ 5/silver oxide composite photo-catalyst
Using, it is characterised in that：The zinc oxide/silver oxide composite photo-catalyst is used for degradation of formaldehyde under visible light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810353224.9A CN108579746B (en) | 2018-04-19 | 2018-04-19 | Preparation method and application of zinc oxide/silver oxide composite photocatalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810353224.9A CN108579746B (en) | 2018-04-19 | 2018-04-19 | Preparation method and application of zinc oxide/silver oxide composite photocatalyst |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108579746A true CN108579746A (en) | 2018-09-28 |
| CN108579746B CN108579746B (en) | 2021-06-25 |
Family
ID=63613848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810353224.9A Active CN108579746B (en) | 2018-04-19 | 2018-04-19 | Preparation method and application of zinc oxide/silver oxide composite photocatalyst |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108579746B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110252299A (en) * | 2019-06-27 | 2019-09-20 | 太原理工大学 | A kind of ternary visible Ag/Ag2O/ZnO catalyst and its preparation method and application |
| CN113477250A (en) * | 2021-07-16 | 2021-10-08 | 新乡医学院 | Carbon fiber cloth @ porous ZnO two-dimensional nanosheet array @ Ag2Synthesis method of O nanoparticle ternary heterojunction |
| CN115350704A (en) * | 2022-07-27 | 2022-11-18 | 重庆工商大学 | Silver protoxide cluster modified perovskite-like hydroxide visible-light-driven photocatalyst, and preparation method and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001011955A2 (en) * | 1999-08-12 | 2001-02-22 | Apyron Technologies, Inc. | Compositions containing a biocidal compound or an adsorbent and/or catalyst compound and methods of making and using therefor |
| CN102585493A (en) * | 2010-12-28 | 2012-07-18 | 上海杰事杰新材料(集团)股份有限公司 | Nano particle/polyamide composite material, preparation method and application thereof |
| CN107233883A (en) * | 2017-06-16 | 2017-10-10 | 中国环境科学研究院 | A kind of mesoporous Ag2O‑MnO2Catalyst and its preparation and application |
| CN107376905A (en) * | 2017-09-08 | 2017-11-24 | 上海戈马环保科技有限公司 | A kind of preparation method of the Ag/ZnO composites of degradable formaldehyde |
-
2018
- 2018-04-19 CN CN201810353224.9A patent/CN108579746B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001011955A2 (en) * | 1999-08-12 | 2001-02-22 | Apyron Technologies, Inc. | Compositions containing a biocidal compound or an adsorbent and/or catalyst compound and methods of making and using therefor |
| CN102585493A (en) * | 2010-12-28 | 2012-07-18 | 上海杰事杰新材料(集团)股份有限公司 | Nano particle/polyamide composite material, preparation method and application thereof |
| CN107233883A (en) * | 2017-06-16 | 2017-10-10 | 中国环境科学研究院 | A kind of mesoporous Ag2O‑MnO2Catalyst and its preparation and application |
| CN107376905A (en) * | 2017-09-08 | 2017-11-24 | 上海戈马环保科技有限公司 | A kind of preparation method of the Ag/ZnO composites of degradable formaldehyde |
Non-Patent Citations (2)
| Title |
|---|
| LINGLING XU等: "Flower-like ZnO-Ag2O composites: precipitation synthesis and photocatalytic activity", 《NANOSCALE RESEARCH LETTERS》 * |
| 熊静芳等: "氧化锌多孔微米花的制备及其气敏性能研究", 《化学学报》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110252299A (en) * | 2019-06-27 | 2019-09-20 | 太原理工大学 | A kind of ternary visible Ag/Ag2O/ZnO catalyst and its preparation method and application |
| CN113477250A (en) * | 2021-07-16 | 2021-10-08 | 新乡医学院 | Carbon fiber cloth @ porous ZnO two-dimensional nanosheet array @ Ag2Synthesis method of O nanoparticle ternary heterojunction |
| CN115350704A (en) * | 2022-07-27 | 2022-11-18 | 重庆工商大学 | Silver protoxide cluster modified perovskite-like hydroxide visible-light-driven photocatalyst, and preparation method and application thereof |
| CN115350704B (en) * | 2022-07-27 | 2023-08-15 | 重庆工商大学 | Ag (silver) alloy 2 O cluster modified perovskite-like hydroxide visible light catalyst, preparation method and application |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108579746B (en) | 2021-06-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Zhao et al. | Study on the photocatalysis mechanism of the Z-scheme cobalt oxide nanocubes/carbon nitride nanosheets heterojunction photocatalyst with high photocatalytic performances | |
| Feng et al. | 3D MXene/Ag2S material as Schottky junction catalyst with stable and enhanced photocatalytic activity and photocorrosion resistance | |
| Sabzehmeidani et al. | Enhanced visible light-active CeO 2/CuO/Ag 2 CrO 4 ternary heterostructures based on CeO 2/CuO nanofiber heterojunctions for the simultaneous degradation of a binary mixture of dyes | |
| Zhao et al. | Facile preparation of dual Z-scheme Bi2O3/g-C3N4/Ag6Si2O7 photocatalyst for highly efficient visible-light photocatalytic degradation of organic pollutants | |
| CN108479774B (en) | Zinc oxide composite photocatalyst and preparation method and application thereof | |
| CN106732524B (en) | Alpha/beta-bismuth oxide phase heterojunction photocatalyst and preparation method and application thereof | |
| CN105727963B (en) | A kind of Fe, Cu co-doped nano ZnO photocatalyst and preparation method thereof | |
| CN108579746A (en) | A kind of preparation method and applications of zinc oxide/silver oxide composite photo-catalyst | |
| Yang et al. | Self-assembly Z-scheme heterostructured photocatalyst of Ag 2 O@ Ag-modified bismuth vanadate for efficient photocatalytic degradation of single and dual organic pollutants under visible light irradiation | |
| CN106044842B (en) | A kind of preparation method and applications of fan-shaped hydroxyl zinc fluoride | |
| CN110465303A (en) | A kind of LaNiO of calcium analysis3The preparation method and application of perovskite type photocatalyst | |
| CN109250755A (en) | A kind of bismuth oxide photocatalyst and preparation method thereof of the different crystal phases containing bismuth defect | |
| CN108554412A (en) | A kind of preparation method and applications of large scale high porosity Fe doping photocatalyzing magnetic porous microsphere | |
| Chuaicham et al. | Visible light-driven ZnCr double layer oxide photocatalyst composites with fly ashes for the degradation of ciprofloxacin | |
| CN106693996B (en) | Preparation method and application of bismuth sulfide-bismuth ferrite composite visible-light-driven photocatalyst | |
| CN104258885A (en) | Preparation method of flaky hydroxyl copper phosphate nanometer material | |
| CN108671951B (en) | Carbon nitride composite photocatalyst and preparation method and application thereof | |
| CN105056986B (en) | A kind of method and catalyst applications for preparing lamellar hydroxyl bismuth subnitrate photocatalyst | |
| CN106140241B (en) | The nanometer g-C of oxonium ion surface regulation3N4Organic photochemical catalyst and its preparation method and application | |
| Zuo et al. | Modification of sulfur doped carbon nitride and its application in photocatalysis | |
| CN108837840B (en) | A kind of Ag/g-C3N4Modify bismuth tungstate mixed crystal composite material and preparation method and application | |
| Gao et al. | Metal-organic framework MIL-68 (In)-NH2-derived carbon-covered cobalt-doped bi-crystalline In2O3 tubular structures for efficient photocatalytic degradation of tetracycline hydrochloride | |
| CN103506104B (en) | Carbon-doped TiO2 visible light-responding catalytic film on glass carrier and preparation method thereof | |
| Guozheng et al. | Effects of light intensity and H2O2 on photocatalytic degradation of phenol in wastewater using TiO2/ACF | |
| CN107349966A (en) | A kind of Pt@MOFs/TiO2Photochemical catalyst and preparation method and application |
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 |