CN111978762A - Carbon nitride photocatalytic coating suitable for building material surface visible light response and preparation method thereof - Google Patents
Carbon nitride photocatalytic coating suitable for building material surface visible light response and preparation method thereof Download PDFInfo
- Publication number
- CN111978762A CN111978762A CN202010901782.1A CN202010901782A CN111978762A CN 111978762 A CN111978762 A CN 111978762A CN 202010901782 A CN202010901782 A CN 202010901782A CN 111978762 A CN111978762 A CN 111978762A
- Authority
- CN
- China
- Prior art keywords
- carbon nitride
- photocatalytic coating
- visible light
- adhesive
- photocatalytic
- 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
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 title claims abstract description 94
- 230000001699 photocatalysis Effects 0.000 title claims abstract description 76
- 238000000576 coating method Methods 0.000 title claims abstract description 62
- 239000011248 coating agent Substances 0.000 title claims abstract description 59
- 239000004566 building material Substances 0.000 title claims abstract description 20
- 230000004298 light response Effects 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title abstract description 11
- 229920000642 polymer Polymers 0.000 claims abstract description 54
- 230000001070 adhesive effect Effects 0.000 claims abstract description 43
- 239000000853 adhesive Substances 0.000 claims abstract description 42
- 239000011230 binding agent Substances 0.000 claims abstract description 13
- 239000004815 dispersion polymer Substances 0.000 claims abstract description 12
- 238000005507 spraying Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000003086 colorant Substances 0.000 claims abstract description 6
- 230000000694 effects Effects 0.000 claims abstract 2
- 239000007788 liquid Substances 0.000 claims description 16
- 239000007864 aqueous solution Substances 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 239000011398 Portland cement Substances 0.000 claims description 11
- 239000011159 matrix material Substances 0.000 claims description 9
- 239000000243 solution Substances 0.000 claims description 9
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 claims description 8
- 239000010410 layer Substances 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- 239000012790 adhesive layer Substances 0.000 claims description 5
- 239000010440 gypsum Substances 0.000 claims description 5
- 229910052602 gypsum Inorganic materials 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 229920002635 polyurethane Polymers 0.000 claims description 5
- 239000004814 polyurethane Substances 0.000 claims description 5
- 235000019353 potassium silicate Nutrition 0.000 claims description 5
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 5
- 229920001567 vinyl ester resin Polymers 0.000 claims description 5
- 239000006185 dispersion Substances 0.000 claims description 4
- 229920002126 Acrylic acid copolymer Polymers 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 230000003197 catalytic effect Effects 0.000 claims description 2
- 239000004568 cement Substances 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims description 2
- 239000002086 nanomaterial Substances 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 239000004575 stone Substances 0.000 claims description 2
- 238000007605 air drying Methods 0.000 claims 1
- 238000009210 therapy by ultrasound Methods 0.000 claims 1
- 239000002023 wood Substances 0.000 claims 1
- 238000004887 air purification Methods 0.000 abstract description 9
- 239000000809 air pollutant Substances 0.000 abstract description 4
- 231100001243 air pollutant Toxicity 0.000 abstract description 4
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 239000007767 bonding agent Substances 0.000 abstract 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 12
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical group O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 12
- 239000007789 gas Substances 0.000 description 11
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 10
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 description 10
- 239000008399 tap water Substances 0.000 description 10
- 235000020679 tap water Nutrition 0.000 description 10
- 238000005406 washing Methods 0.000 description 10
- 229920002554 vinyl polymer Polymers 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- 238000006555 catalytic reaction Methods 0.000 description 7
- 239000011941 photocatalyst Substances 0.000 description 7
- 150000003839 salts Chemical class 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 239000011083 cement mortar Substances 0.000 description 6
- 229920001577 copolymer Polymers 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 238000011156 evaluation Methods 0.000 description 5
- 235000011164 potassium chloride Nutrition 0.000 description 5
- 239000001103 potassium chloride Substances 0.000 description 5
- 239000000758 substrate Substances 0.000 description 5
- 239000004408 titanium dioxide Substances 0.000 description 5
- 238000005303 weighing Methods 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 239000002131 composite material Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000011812 mixed powder Substances 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 238000007146 photocatalysis Methods 0.000 description 4
- OWYWGLHRNBIFJP-UHFFFAOYSA-N Ipazine Chemical compound CCN(CC)C1=NC(Cl)=NC(NC(C)C)=N1 OWYWGLHRNBIFJP-UHFFFAOYSA-N 0.000 description 3
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 3
- 229920006243 acrylic copolymer Polymers 0.000 description 3
- HNYOPLTXPVRDBG-UHFFFAOYSA-N barbituric acid Chemical compound O=C1CC(=O)NC(=O)N1 HNYOPLTXPVRDBG-UHFFFAOYSA-N 0.000 description 3
- 239000004202 carbamide Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 239000008367 deionised water Substances 0.000 description 3
- 229910021641 deionized water Inorganic materials 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 2
- 230000003373 anti-fouling effect Effects 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 2
- 239000004579 marble Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- 238000001132 ultrasonic dispersion Methods 0.000 description 2
- ODUCDPQEXGNKDN-UHFFFAOYSA-N Nitrogen oxide(NO) Natural products O=N ODUCDPQEXGNKDN-UHFFFAOYSA-N 0.000 description 1
- CKUAXEQHGKSLHN-UHFFFAOYSA-N [C].[N] Chemical compound [C].[N] CKUAXEQHGKSLHN-UHFFFAOYSA-N 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-YPZZEJLDSA-N carbon-10 atom Chemical compound [10C] OKTJSMMVPCPJKN-YPZZEJLDSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000006258 conductive agent Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000005447 environmental material Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- PKWIYNIDEDLDCJ-UHFFFAOYSA-N guanazole Chemical compound NC1=NNC(N)=N1 PKWIYNIDEDLDCJ-UHFFFAOYSA-N 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000002952 polymeric resin Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 150000003852 triazoles Chemical class 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
-
- 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
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/24—Nitrogen compounds
-
- B01J35/39—
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/52—Two layers
- B05D7/54—No clear coat specified
- B05D7/544—No clear coat specified the first layer is let to dry at least partially before applying the second layer
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D123/00—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers
- C09D123/02—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D123/04—Homopolymers or copolymers of ethene
- C09D123/08—Copolymers of ethene
- C09D123/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C09D123/0892—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms containing monomers with other atoms than carbon, hydrogen or oxygen atoms
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
Abstract
The invention discloses a carbon nitride photocatalytic coating suitable for visible light response of building material surfaces and a preparation method thereof. The visible light response carbon nitride photocatalytic coating is composed of a carbon nitride polymer with a photocatalytic effect and a bonding layer with a bonding effect, wherein the bonding layer is composed of an organic adhesive and an inorganic adhesive. The photocatalytic coating is prepared by uniformly spraying an aqueous binder solution and a carbon nitride polymer dispersion on the surface of the base material in sequence. The appearance color of the photocatalytic coating can be regulated and controlled by selecting carbon nitride polymers with different colors according to the requirements of application scenes. The carbon nitride polymer in the photocatalytic coating is not wrapped by the adhesive, so that the photocatalytic coating can be in full contact with air pollutants, and has high-efficiency air purification performance under the irradiation of lamplight or sunlight; the bonding layer composed of the organic bonding agent and the inorganic bonding agent has the characteristics of high bonding strength and good weather resistance, and the photocatalytic coating has good photocatalytic efficacy and durability.
Description
Technical Field
The invention belongs to the field of environmental materials, and particularly relates to a carbon nitride photocatalytic coating suitable for visible light response of building material surfaces and a preparation method thereof.
Background
With the rapid development of social economy, the environmental pollution problem is becoming more severe. Among them, industrial exhaust gas and automobile exhaust gas (main component including Nitrogen Oxide (NO)x) Not only seriously undermining the ecological environment, but also poses a threat to human health. At present, the technology of emission reduction and emission control aiming at the emission end of the pollution source has made certain progress, but no obvious effective control measure and technology for the atmospheric pollutants emitted to the air are available. As a green sustainable environment restoration technology, the semiconductor photocatalysis technology shows good application prospect in the field of environmental pollution treatment in recent years. The practical application of the photocatalysis technology can not be supported by carriers, and the building materials comprise cement-based materials, stone materials and steel materialsAnd the like, which is the most widely used and applied man-made material worldwide, can be exposed to more air pollution and obtain sufficient illumination, such as: the road surface and the road edge building are ideal carriers of the photocatalysis technology.
The most commonly used photocatalyst at present is titanium dioxide (TiO)2) It has the advantages of high chemical stability, stable catalytic performance, etc., but TiO2The energy gap of the solar energy is large (the band gap width is 3.2 eV), and the solar energy only responds to ultraviolet light with the wavelength of less than 387 nm in the solar spectrum, so that the application of the solar energy in relatively closed spaces (underground parking lots, tunnels and the like) which are only irradiated by visible light and have high air pollutant concentration is severely limited. In recent years, carbon nitride polymers, which are visible-light-responsive, non-toxic, inexpensive and metal component-free photocatalysts, have been the focus of research in the field of photocatalysis due to their unique semiconductor band structures and excellent chemical stability. Currently, there are few reports on the application of carbon nitride polymers in building materials. CN105504893A discloses a slow-release type photocatalytic antifouling self-cleaning coating and a preparation method thereof, wherein a polymer resin composite photocatalyst (TiO)2Or graphite phase carbon nitride) is mixed with the porous material and the inorganic binder and then sprayed to prepare the photocatalytic antifouling self-cleaning coating. CN107359302A discloses a carbon nitride composite coating, in which carbon nitride, a conductive agent and a binder are uniformly mixed. CN106752446A discloses a graphite phase carbon nitride-graphene composite modified self-cleaning heat-conducting fluorocarbon finish paint, which is prepared by uniformly mixing graphite phase carbon nitride with fluorocarbon resin, organic solvent, defoaming agent, and the like and then coating. These patents fully address the great potential for the use of carbon nitride photocatalysts, however, the photocatalytic coatings described above still have some limitations. Meanwhile, as the carbon nitride polymer is uniformly mixed with the adhesive, part of the carbon nitride polymer is wrapped by the adhesive, which greatly reduces the active reaction sites of the carbon nitride photocatalyst, and leads to lower photocatalytic efficiency. Secondly, the adhesive used in the photocatalytic coating is mostly a single organic adhesive or inorganic adhesive, the organic adhesive has high bonding strength but poor weather resistance, and the inorganic adhesive has good weather resistance but combines with carbon nitride polymerThe bond strength of the compound is weak. In addition, the appearance color of the current photocatalytic coating is single, and is difficult to meet the requirement of part of building beauty, and the method of adding dye into the coating greatly reduces the photocatalytic performance of the coating.
Disclosure of Invention
In view of the blank and the deficiency of the prior art, the invention provides a carbon nitride photocatalytic coating suitable for building material surface visible light response and a preparation method thereof, the coating can play a role in air purification under the irradiation of lamplight or sunlight, and has good photocatalytic efficacy durability; in addition, the appearance color can be adjusted according to the requirements of application scenes.
In order to realize the purpose, the invention is realized by the following technical scheme:
a carbon nitride photocatalytic coating suitable for building material surface visible light response is composed of a carbon nitride polymer with photocatalytic effect and an adhesive layer with adhesive effect. Wherein the content of the carbon nitride polymer in unit area is 8-50 g/m2(ii) a The content of the organic binder and the inorganic binder in the unit area of the adhesive layer is 1 to 20 g/m2And 0.5 to 10 g/m2。
According to the scheme, the carbon nitride polymers with three colors are prepared by the following method: (1) yellow carbon nitride polymer: weighing 10 g of urea and 0.01-0.03 g of barbituric acid, dissolving in 10 ml of deionized water, magnetically stirring for 24 hours, evaporating to remove water, putting into a muffle furnace, preserving heat at 550 ℃ for 4 hours, and grinding in a mortar to obtain a carbon nitride polymer; (2) green carbon nitride polymer: respectively weighing 1 g of heptazine, 4-16 g of lithium chloride and potassium chloride, and mixing the heptazine and the lithium chloride and the potassium chloride according to a mass ratio of 9:11, placing the mixed powder in a muffle furnace, heating to 550 ℃ under the protection of nitrogen, preserving the temperature for 4 hours, naturally cooling, and washing off the mixed salt to obtain the green carbon nitride polymer. (3) Red carbon nitride polymer: respectively weighing 2 g of triazole derivative and 4-16 g of mixed salt consisting of lithium chloride and potassium chloride according to a mass ratio of 9:11, placing the mixed powder in a muffle furnace, heating to 550 ℃ under the protection of nitrogen, preserving the temperature for 4 hours, naturally cooling, and washing off the mixed salt to obtain the red carbon nitride polymer. The carbon nitride polymers of the three colors are only carbon nitride polymers with better photocatalytic effect in the invention, and the carbon nitride polymers of the other colors can be synthesized by changing precursors and reaction conditions, which belongs to the coverage of the invention.
According to the scheme, the carbon nitride polymer is a two-dimensional layered nano material, the thickness of the carbon nitride polymer is 3-30 nm, and the specific surface area of the carbon nitride polymer is 75-200 m2/g。
According to the scheme, the organic adhesive comprises vinyl ester copolymer, acrylic acid copolymer and polyurethane copolymer.
According to the scheme, the organic adhesive is uniform fluid, the viscosity of the organic adhesive is 65-150 mPa & s, and the pH value of the organic adhesive is 5-10.
According to the scheme, the inorganic binder comprises P.O 42.5.5 ordinary portland cement, water glass (modulus is 1.5-3.5) and alpha-type high-strength gypsum.
The preparation method of the carbon nitride photocatalytic coating suitable for the visible light response of the building material surface comprises the following steps: (1) coating an adhesive aqueous solution on the surface of the substrate, and airing for 2-18 hours at room temperature; (2) and spraying carbon nitride polymer dispersion liquid on the surface of the bonding layer, and airing at room temperature for 24 hours to obtain the photocatalytic coating.
According to the scheme, the surface of the substrate in the step (1) needs to be kept clean and dry.
According to the scheme, after the organic adhesive, the inorganic adhesive and water are mixed in the step (1), the mixture is mechanically stirred for 1-2 hours and then ultrasonically dispersed for 5-10 hours to obtain the adhesive aqueous solution.
According to the scheme, in the step (1), the mass fraction of the organic adhesive in the aqueous solution of the adhesive is 1-20%, and the mass fraction of the inorganic adhesive is 0.5-10%
According to the scheme, the dispersion liquid of the carbon nitride polymer in the step (2) is an ethanol water solution, wherein the mass fraction of ethanol is 1-99%.
According to the scheme, the ultrasonic dispersion time of the carbon nitride polymer in the ethanol water solution in the step (2) is 3-5 hours.
According to the scheme, the content of the carbon nitride polymer in the carbon nitride polymer dispersion liquid in the step (2) is 1-25 g/L.
The invention has the following advantages:
1) the carbon nitride polymer with visible light response is selected as the photocatalyst, so that the photocatalytic coating can also play a role in photocatalytic gas purification under the irradiation of light (visible light), and is suitable for air purification of a relatively closed space.
2) The organic-inorganic composite adhesive has the characteristics of high bonding strength and good weather resistance, so that the photocatalytic coating has excellent photocatalytic efficacy and durability.
3) Compared with a common photocatalytic coating prepared by mixing a photocatalyst and an adhesive and then spraying, the carbon nitride polymer in the photocatalytic coating is not wrapped by the adhesive, can fully contact air pollutants, and has high-efficiency air purification performance.
4) The appearance color of the carbon nitride polymer can be regulated and controlled by selecting carbon nitride polymers with different colors according to the requirements of application scenes, and the photocatalytic effect of the carbon nitride polymer is hardly reduced.
Drawings
FIG. 1 is a schematic diagram of a test system for photocatalytic NO removal efficiency;
in the figure: firstly, high-purity air is obtained; a pressure reducing valve; thirdly, a flow stabilizing valve; NO cylinder gas; washing the gas cylinder; flow rate controller; seventhly, a temperature and humidity sensor; eighthly, the reactor and an LED light source; ninthly, a NOx analyzer; absorbing bottle for car body exhaust.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, but the scope of the present invention is not limited thereto. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The photocatalytic gas purification performance of the photocatalytic coating in the invention can remove NO by visible light catalysisxThe efficiency of the test system is evaluated, as shown in FIG. 1, the whole test system is denseThe method comprises the steps of closing a space, taking nitric oxide as a simulated air pollutant, controlling the concentration of target gas to be 600 ppb NO through a gas circuit mixing device, controlling the gas flow rate to be 0.6L/min, the humidity to be 60 +/-2 percent and the temperature to be 24 +/-2 ℃, arranging an LED light source (with the wavelength of light being 10 mm) in a reactor, wherein a substrate with a photocatalytic coating loaded on the surface is arranged in the reactor>420 nm) of the gas passing through the reactor directly into NOxReal-time collection of NO in gas by analyzerxThe efficiency of visible light catalysis removal of NO of the photocatalytic coating is calculated according to the following formula:
whereinƞFor the photocatalytic efficiency (%),C off the concentration of NO when the lamp is not turned on,C on the NO concentration at the time of lamp-on.
Example 1
1) Preparation of yellow carbon nitride polymer: 10 g of urea and 0.02 g of barbituric acid are respectively weighed and dissolved in 10 ml of deionized water, the mixture is magnetically stirred for 24 hours, then the water is evaporated to dryness, the mixture is placed in a muffle furnace to be kept at 550 ℃ for 4 hours, and the mixture is naturally cooled and then taken out to be ground to obtain the yellow carbon nitride polymer.
2) And ultrasonically dispersing the carbon nitride polymer in an ethanol water solution with the mass fraction of 50% of ethanol for 3 hours to obtain a carbon nitride polymer dispersion liquid with the content of 10 g/L.
3) Mixing ethylene-vinyl chloride-ethylene ester copolymer with P.O 42.5.5 ordinary portland cement and water, mechanically stirring for 2 hours, and ultrasonically dispersing for 5 hours to obtain an adhesive aqueous solution, wherein the mass fraction of the ethylene-vinyl chloride-ethylene ester copolymer is 5%, and the mass fraction of the P.O 42.5.5 ordinary portland cement is 1%.
4) Selecting cement mortar subjected to standard maintenance for 28 days as a matrix, uniformly coating the aqueous solution of the binder prepared in the step 3) on the surface of the cement mortar matrix, and airing at room temperature for 2 hours, wherein the contents of ethylene-vinyl chloride-ethylene ester copolymer and portland cement in unit area are respectively 5 g/m2And 1 g/m2。
5) Uniformly spraying the carbon nitride polymer dispersion liquid prepared in the step (2) on the surface of the bonding layer, wherein the content of the carbon nitride polymer in unit area is 5 g/m2(ii) a And air-dried at room temperature for 24 hours to obtain a yellow photocatalytic coating.
Visible photocatalytic NO removal by testing of the photocatalytic coating producedxEfficiency evaluation of air purification performance (FIG. 1), visible light photocatalytic removal of NOxThe average efficiency of (2) is 55%, and NO is removed by visible light catalysis after 3 hours of washing by tap water (the flow rate of the tap water is 0.6L/min)xThe average efficiency of (2) was 45%.
Example 2
1) Preparation of green carbon nitride polymer: respectively weighing 1 g of heptazine carbon nitride and 10 g of mixed salt with the mass ratio of lithium chloride to potassium chloride being 9:11, uniformly mixing, placing the mixed powder in a muffle furnace, heating to 550 ℃ under the protection of nitrogen, preserving the temperature for 4 hours, naturally cooling, and washing off the mixed salt to obtain the green carbon nitride polymer.
2) And ultrasonically dispersing the carbon nitride polymer in an ethanol water solution with the mass fraction of ethanol of 10% for 5 hours to obtain a carbon nitride polymer dispersion liquid with the content of 5 g/L.
3) Mixing the polyurethane copolymer with water glass and water, mechanically stirring for 1 hour, and ultrasonically dispersing for 10 hours to obtain an adhesive aqueous solution, wherein the mass fraction of the polyurethane copolymer is 2%, and the mass fraction of the water glass is 0.5%.
4) Selecting a marble plate as a matrix, uniformly coating the aqueous solution of the adhesive prepared in the step 3) on the surface of the marble plate matrix, and airing at room temperature for 5 hours, wherein the contents of polyurethane copolymer and water glass in a unit area are respectively 2 g/m2And 0.5 g/m2。
5) Uniformly spraying the carbon nitride polymer dispersion liquid prepared in the step (2) on the surface of the bonding layer, wherein the content of the carbon nitride polymer in unit area is 1 g/m2(ii) a And air-dried at room temperature for 24 hours to obtain a green photocatalytic coating.
By measuringVisible photocatalytic removal of NO from photocatalytic coatings testedxEfficiency evaluation of air purification performance (FIG. 1), visible light photocatalytic removal of NOxThe average efficiency of (2) is 50%, and NO is removed by visible light catalysis after 3 hours of washing by tap water (the flow rate of the tap water is 0.6L/min)xThe average efficiency of (2) was 45%.
Example 3
1) Preparation of red carbon nitride polymer: respectively weighing 2 g of 3, 5-diamino-1, 2, 4-triazole and 10 g of mixed salt of lithium chloride and potassium chloride in a mass ratio of 9:11, uniformly mixing, placing the mixed powder in a muffle furnace, heating to 550 ℃ under the protection of nitrogen, preserving the temperature for 4 hours, naturally cooling, and washing off the mixed salt to obtain the red carbon nitride polymer.
2) And ultrasonically dispersing the carbon nitride polymer in an ethanol water solution with the ethanol mass fraction of 90% for 4 hours to obtain a carbon nitride polymer dispersion liquid with the content of 15 g/L.
3) Mixing acrylic copolymer with gypsum and water, mechanically stirring for 2 hours, and ultrasonically dispersing for 8 hours to obtain an adhesive aqueous solution, wherein the mass fraction of the acrylic copolymer is 10%, and the mass fraction of the gypsum is 5%.
4) Selecting a stainless steel material as a substrate, uniformly coating the surface of the stainless steel material substrate with the aqueous solution of the adhesive prepared in the step 3), and airing at room temperature for 10 hours, wherein the contents of acrylic copolymer and gypsum in unit area are respectively 16 g/m2And 8 g/m2。
5) Uniformly spraying the carbon nitride polymer dispersion liquid prepared in the step (2) on the surface of the bonding layer, wherein the content of the carbon nitride polymer in unit area is 12 g/m2(ii) a And air dried at room temperature for 24 hours to obtain a red photocatalytic coating.
Visible photocatalytic NO removal by testing of the photocatalytic coating producedxEfficiency evaluation of air purification performance (FIG. 1), visible light photocatalytic removal of NOxThe average efficiency of (2) is 65%, and NO is removed by visible light catalysis after 3 hours of washing by tap water (the flow rate of the tap water is 0.6L/min)xThe average efficiency of (a) is 60%.
Comparative example 1
Directly mixing the carbon nitride polymer and the adhesive and then spraying the mixture to prepare the photocatalytic coating.
1) Preparation of yellow carbon nitride polymer: 10 g of urea and 0.02 g of barbituric acid are respectively weighed and dissolved in 10 ml of deionized water, the mixture is magnetically stirred for 24 hours, then the water is evaporated to dryness, the mixture is placed in a muffle furnace to be kept at 550 ℃ for 4 hours, and the mixture is naturally cooled and then taken out to be ground to obtain the yellow carbon nitride polymer.
2) And ultrasonically dispersing the carbon nitride polymer in an ethanol water solution with the mass fraction of 50% of ethanol for 3 hours to obtain a carbon nitride polymer dispersion liquid with the content of 10 g/L.
3) Taking the ethylene-vinyl chloride-vinyl ester copolymer, P.O 42.5.5 ordinary Portland cement and the mixed carbon nitride polymer dispersion liquid prepared in the step 2), mechanically stirring for 2 hours, and ultrasonically dispersing for 5 hours to obtain a mixed liquid containing the nitrogen carbon polymer and the adhesive, wherein the mass fraction of the ethylene-vinyl chloride-vinyl ester copolymer is 5%, and the mass fraction of the P.O 42.5.5 ordinary Portland cement is 1%.
4) Selecting cement mortar subjected to standard maintenance for 28 days as a matrix, uniformly coating the mixed solution prepared in the step 3) on the surface of the cement mortar matrix, and airing at room temperature for 24 hours to obtain a photocatalytic coating, wherein the contents of ethylene-vinyl chloride-vinyl ester copolymer and portland cement in unit area are respectively 5 g/m2And 1 g/m2The content of the carbon nitride polymer per unit area was 5 g/m2。
Visible photocatalytic NO removal by testing of the photocatalytic coating producedxEfficiency evaluation of air purification performance (FIG. 1), visible light photocatalytic removal of NOxThe average efficiency of (2%) and the visible light catalysis can remove NO after 3 hours of washing with tap water (the flow rate of tap water is 0.6L/min)xThe average efficiency of (2) was 1%.
Comparative example 2
Photocatalytic coatings prepared with commercial titanium dioxide (anatase).
1) Carrying out ultrasonic dispersion on titanium dioxide in an ethanol water solution with the mass fraction of 50% of ethanol for 3 hours to obtain a titanium dioxide dispersion liquid with the content of 10 g/L.
2) Mixing ethylene-vinyl chloride-ethylene ester copolymer with P.O 42.5.5 ordinary portland cement and water, mechanically stirring for 2 hours, and ultrasonically dispersing for 5 hours to obtain an adhesive aqueous solution, wherein the mass fraction of the ethylene-vinyl chloride-ethylene ester copolymer is 5%, and the mass fraction of the P.O 42.5.5 ordinary portland cement is 1%.
3) Selecting cement mortar subjected to standard maintenance for 28 days as a matrix, uniformly coating the aqueous solution of the binder prepared in the step 3) on the surface of the cement mortar matrix, and airing at room temperature for 2 hours, wherein the contents of ethylene-vinyl chloride-ethylene ester copolymer and portland cement in unit area are respectively 5 g/m2And 1 g/m2。
4) Uniformly spraying the titanium dioxide dispersion liquid prepared in the step (2) on the surface of the bonding layer, wherein the content of the titanium dioxide in unit area is 5 g/m2(ii) a And air-dried at room temperature for 24 hours to obtain a white photocatalytic coating.
Visible photocatalytic NO removal by testing of the photocatalytic coating producedxEfficiency evaluation of air purification performance (FIG. 1), visible light photocatalytic removal of NOxThe average efficiency of (2) is 1%, and NO is removed by visible light catalysis after 3 hours of washing by tap water (the flow rate of the tap water is 0.6L/min)xThe average efficiency of (2) was 1%.
The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the present invention.
Claims (9)
1. A carbon nitride photocatalytic coating suitable for building material surface visible light response is characterized in that: the carbon nitride photocatalytic coating consists of a carbon nitride polymer with photocatalytic effect and a bonding layer with bonding effect.
2. The photocatalytic coating of carbon nitride adapted for building material surface visible light response of claim 1, wherein: the building material comprises cement-based materials, wood, stone and steel.
3. The photocatalytic coating of carbon nitride adapted for building material surface visible light response of claim 1, wherein: the carbon nitride polymer is a two-dimensional layered nano material, the thickness of the carbon nitride polymer is 3-30 nm, and the specific surface area of the carbon nitride polymer is 75-200 m2/g。
4. The photocatalytic coating of carbon nitride adapted for building material surface visible light response of claim 1, wherein: the apparent colors of the carbon nitride polymer comprise: yellow, green or red, and can extend the wavelength range of absorbed light from <420 nm to <700 nm.
5. The photocatalytic coating of carbon nitride adapted for building material surface visible light response of claim 1, wherein: the adhesive layer is composed of an organic adhesive and an inorganic adhesive.
6. The photocatalytic coating of carbon nitride adapted for building material surface visible light response of claim 5, wherein: the organic binder includes vinyl ester copolymer, acrylic acid copolymer and polyurethane copolymer.
7. The photocatalytic coating of carbon nitride adapted for building material surface visible light response of claim 5, wherein: the organic adhesive is a uniform fluid, the viscosity of the organic adhesive is 65-150 mPa · s, and the pH value of the organic adhesive is 5-10.
8. The photocatalytic coating of carbon nitride adapted for building material surface visible light response of claim 5, wherein: the inorganic binder includes P.O 42.5.5 Portland cement, water glass and alpha-type high strength gypsum.
9. A method of preparing a visible light responsive carbon nitride catalytic coating suitable for use on a building material surface as in claim 1, wherein: the method comprises the following specific steps:
(1) mixing an organic adhesive, an inorganic adhesive and water, mechanically stirring for 1-2 hours, and ultrasonically dispersing for 5-10 hours to obtain an adhesive aqueous solution, wherein the mass fraction of the organic adhesive is 1-20%, and the mass fraction of the inorganic adhesive is 0.5-10%;
(2) carrying out ultrasonic treatment on carbon nitride in an ethanol water solution for 3-5 hours to obtain a carbon nitride dispersion liquid with the content of 1-25 g/L;
(3) uniformly coating the aqueous solution of the binder prepared in the step (1) on the surface of a matrix, wherein the content of the organic binder and the inorganic binder in a unit area is 1-20 g/m2And 0.5 to 10 g/m2And air-drying the adhesive layer at room temperature for 2 to 18 hours to obtain an adhesive layer;
(4) uniformly spraying the carbon nitride polymer dispersion liquid prepared in the step (2) on the surface of the bonding layer, wherein the content of the carbon nitride polymer in unit area is 8-50 g/m2And airing the coating for 24 hours at room temperature to obtain the carbon nitride photocatalytic coating suitable for the visible light response of the building material surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010901782.1A CN111978762B (en) | 2020-09-01 | 2020-09-01 | Carbon nitride photocatalytic coating suitable for building material surface visible light response and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010901782.1A CN111978762B (en) | 2020-09-01 | 2020-09-01 | Carbon nitride photocatalytic coating suitable for building material surface visible light response and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111978762A true CN111978762A (en) | 2020-11-24 |
| CN111978762B CN111978762B (en) | 2022-04-08 |
Family
ID=73446866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010901782.1A Active CN111978762B (en) | 2020-09-01 | 2020-09-01 | Carbon nitride photocatalytic coating suitable for building material surface visible light response and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111978762B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112939549A (en) * | 2021-04-09 | 2021-06-11 | 福州大学 | Cement-based coating and preparation method thereof |
| CN114904553A (en) * | 2022-05-26 | 2022-08-16 | 福建工程学院 | Carbon nitride-loaded photocatalytic cement-based material and preparation method thereof |
| CN115180976A (en) * | 2022-07-22 | 2022-10-14 | 济南大学 | Preparation method of photocatalytic cement-based material |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5616532A (en) * | 1990-12-14 | 1997-04-01 | E. Heller & Company | Photocatalyst-binder compositions |
| CN1443605A (en) * | 1993-12-10 | 2003-09-24 | 东陶机器株式会社 | Multifunctional material with optical catalytic function and its mfg. method |
| CN108906111A (en) * | 2018-07-26 | 2018-11-30 | 湖南大学 | Self assembly is copolymerized carbonitride optic catalytic composite material and its preparation method and application |
| CN109012756A (en) * | 2018-09-17 | 2018-12-18 | 南京景铄新材料科技有限公司 | A kind of catalysis material and preparation method thereof with high stability |
| CN109590006A (en) * | 2018-12-17 | 2019-04-09 | 江苏大学 | A kind of preparation method of triazine/seven piperazine homoatomic hetero-junctions carbon nitride photocatalysts |
| CN111155388A (en) * | 2019-12-31 | 2020-05-15 | 赵梓权 | Photocatalytic pavement paving method |
-
2020
- 2020-09-01 CN CN202010901782.1A patent/CN111978762B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5616532A (en) * | 1990-12-14 | 1997-04-01 | E. Heller & Company | Photocatalyst-binder compositions |
| CN1443605A (en) * | 1993-12-10 | 2003-09-24 | 东陶机器株式会社 | Multifunctional material with optical catalytic function and its mfg. method |
| CN108906111A (en) * | 2018-07-26 | 2018-11-30 | 湖南大学 | Self assembly is copolymerized carbonitride optic catalytic composite material and its preparation method and application |
| CN109012756A (en) * | 2018-09-17 | 2018-12-18 | 南京景铄新材料科技有限公司 | A kind of catalysis material and preparation method thereof with high stability |
| CN109590006A (en) * | 2018-12-17 | 2019-04-09 | 江苏大学 | A kind of preparation method of triazine/seven piperazine homoatomic hetero-junctions carbon nitride photocatalysts |
| CN111155388A (en) * | 2019-12-31 | 2020-05-15 | 赵梓权 | Photocatalytic pavement paving method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112939549A (en) * | 2021-04-09 | 2021-06-11 | 福州大学 | Cement-based coating and preparation method thereof |
| CN114904553A (en) * | 2022-05-26 | 2022-08-16 | 福建工程学院 | Carbon nitride-loaded photocatalytic cement-based material and preparation method thereof |
| CN115180976A (en) * | 2022-07-22 | 2022-10-14 | 济南大学 | Preparation method of photocatalytic cement-based material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111978762B (en) | 2022-04-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111978762B (en) | Carbon nitride photocatalytic coating suitable for building material surface visible light response and preparation method thereof | |
| CN106179444B (en) | A kind of preparation method of activated carbon supported carbon doped graphite phase carbon nitride | |
| NO333658B1 (en) | Mixture for coating walls, method of preparation and use of the same | |
| CN103756376A (en) | Environment-friendly coating with visible light catalysis function, and preparation method thereof | |
| CN101518730B (en) | Composite nanometer titanium dioxide photocatalysis material and preparation method thereof | |
| CN107159223B (en) | A kind of cobalt acid lanthanum/attapulgite/redox graphene nanostructure composite material and its preparation method and application | |
| CN107841167B (en) | Transparent exterior wall nano coating and preparation method thereof | |
| CN109622048A (en) | A kind of photocatalysis film and preparation method thereof | |
| CN106000423B (en) | TiO2/MnS/Ga2O3Composite photocatalyst colloid preparation method | |
| CN102627874A (en) | Composite-structure pigment having low lightness and infrared emitting ability and preparation method thereof | |
| CN105925021B (en) | TiO2/Ga2O3The preparation method of composite photocatalyst colloid | |
| CN114196241A (en) | Photocatalytic self-cleaning coating and preparation method and application thereof | |
| CN108579210A (en) | The filtering material and preparation method of the compound carbonic anhydrase absorption carbon dioxide of graphene | |
| CN110484064B (en) | Aluminum paste fluorocarbon coating and preparation method thereof | |
| CN106495510B (en) | A kind of nano-TiO with photo-catalysis function2/ Zeolite modifying cement and preparation method thereof | |
| Mendoza et al. | Photocatalytic performance of TiO 2 and WO 3/TiO 2 nanoparticles coated on urban green infrastructure materials in removing nitrogen oxide | |
| CN108355695A (en) | A kind of special diatom ooze and preparation method having the interior purifying formaldehyde for turning light | |
| CN1698932A (en) | Supported nano gold catalyst for clearing formaldehyde from indoor air and method for preparing the same | |
| CN108043400A (en) | A kind of Au-Bi2MoO6/ diatomite composite material and preparation method and application | |
| CN106178941A (en) | A kind of cadmium telluride quantum dot/composite titania material and application thereof | |
| Zhang et al. | Facile synthesis of sponge-loaded Bi 2 WO 6 photocatalyst and degradation of tetracycline hydrochloride under visible light | |
| Liu et al. | Immobilization of nonisolated BiPO 4 particles onto PDMS/SiO 2 composite for the photocatalytic degradation of dye pollutants | |
| CN107486203B (en) | Recyclable floating type composite photocatalytic ball and preparation method and application thereof | |
| CN102408246A (en) | Preparation method of nitrogen-doped silicon-aluminum immobilized TiO2 porous ceramic | |
| Diamanti et al. | Photocatalytic performance of mortars with nanoparticles exposed to the urban environment |
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 |