CN110408316A - A kind of preparation method of photocatalysis super-hydrophobic coat - Google Patents
A kind of preparation method of photocatalysis super-hydrophobic coat Download PDFInfo
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- CN110408316A CN110408316A CN201910788448.7A CN201910788448A CN110408316A CN 110408316 A CN110408316 A CN 110408316A CN 201910788448 A CN201910788448 A CN 201910788448A CN 110408316 A CN110408316 A CN 110408316A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 49
- 230000003075 superhydrophobic effect Effects 0.000 title claims abstract description 49
- 230000001699 photocatalysis Effects 0.000 title claims abstract description 43
- 238000007146 photocatalysis Methods 0.000 title claims abstract description 36
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims abstract description 56
- 229910052961 molybdenite Inorganic materials 0.000 claims abstract description 46
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000000126 substance Substances 0.000 claims abstract description 13
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 10
- 239000011734 sodium Substances 0.000 claims abstract description 10
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 48
- 239000000243 solution Substances 0.000 claims description 46
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 41
- 238000003756 stirring Methods 0.000 claims description 31
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 21
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims description 21
- 239000008367 deionised water Substances 0.000 claims description 20
- 229910021641 deionized water Inorganic materials 0.000 claims description 20
- CBACFHTXHGHTMH-UHFFFAOYSA-N 2-piperidin-1-ylethyl 2-phenyl-2-piperidin-1-ylacetate;dihydrochloride Chemical compound Cl.Cl.C1CCCCN1C(C=1C=CC=CC=1)C(=O)OCCN1CCCCC1 CBACFHTXHGHTMH-UHFFFAOYSA-N 0.000 claims description 19
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 claims description 18
- 238000006243 chemical reaction Methods 0.000 claims description 17
- 238000010438 heat treatment Methods 0.000 claims description 17
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 239000011259 mixed solution Substances 0.000 claims description 13
- 239000011684 sodium molybdate Substances 0.000 claims description 13
- 235000015393 sodium molybdate Nutrition 0.000 claims description 13
- TVXXNOYZHKPKGW-UHFFFAOYSA-N sodium molybdate (anhydrous) Chemical compound [Na+].[Na+].[O-][Mo]([O-])(=O)=O TVXXNOYZHKPKGW-UHFFFAOYSA-N 0.000 claims description 13
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 claims description 12
- 229960000935 dehydrated alcohol Drugs 0.000 claims description 12
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 claims description 12
- 229920005573 silicon-containing polymer Polymers 0.000 claims description 12
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims description 11
- 238000004140 cleaning Methods 0.000 claims description 11
- 239000011630 iodine Substances 0.000 claims description 11
- 229910052740 iodine Inorganic materials 0.000 claims description 11
- DLFVBJFMPXGRIB-UHFFFAOYSA-N thioacetamide Natural products CC(N)=O DLFVBJFMPXGRIB-UHFFFAOYSA-N 0.000 claims description 11
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 10
- 239000007864 aqueous solution Substances 0.000 claims description 10
- 239000011159 matrix material Substances 0.000 claims description 10
- YUKQRDCYNOVPGJ-UHFFFAOYSA-N thioacetamide Chemical compound CC(N)=S YUKQRDCYNOVPGJ-UHFFFAOYSA-N 0.000 claims description 9
- 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 description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- OISMQLUZKQIKII-UHFFFAOYSA-L dichlorocadmium;hydrate Chemical compound O.[Cl-].[Cl-].[Cd+2] OISMQLUZKQIKII-UHFFFAOYSA-L 0.000 claims description 7
- 230000003647 oxidation Effects 0.000 claims description 7
- 238000007254 oxidation reaction Methods 0.000 claims description 7
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 229910052700 potassium Inorganic materials 0.000 claims description 6
- 239000011591 potassium Substances 0.000 claims description 6
- 239000012046 mixed solvent Substances 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 5
- 239000000758 substrate Substances 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 4
- 230000036571 hydration Effects 0.000 claims description 4
- 238000006703 hydration reaction Methods 0.000 claims description 4
- 230000035484 reaction time Effects 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- -1 Radical siloxane Chemical class 0.000 claims description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims 1
- 238000002242 deionisation method Methods 0.000 claims 1
- RXPAJWPEYBDXOG-UHFFFAOYSA-N hydron;methyl 4-methoxypyridine-2-carboxylate;chloride Chemical compound Cl.COC(=O)C1=CC(OC)=CC=N1 RXPAJWPEYBDXOG-UHFFFAOYSA-N 0.000 claims 1
- 229910052750 molybdenum Inorganic materials 0.000 claims 1
- 239000011733 molybdenum Substances 0.000 claims 1
- 229910052980 cadmium sulfide Inorganic materials 0.000 abstract description 51
- WUPHOULIZUERAE-UHFFFAOYSA-N 3-(oxolan-2-yl)propanoic acid Chemical compound OC(=O)CCC1CCCO1 WUPHOULIZUERAE-UHFFFAOYSA-N 0.000 abstract description 14
- 239000011248 coating agent Substances 0.000 abstract description 10
- 238000000576 coating method Methods 0.000 abstract description 10
- 230000002209 hydrophobic effect Effects 0.000 abstract description 9
- 239000002131 composite material Substances 0.000 abstract description 7
- 239000002105 nanoparticle Substances 0.000 abstract description 6
- 239000002086 nanomaterial Substances 0.000 abstract description 5
- URVGHPZOLQFKJZ-UHFFFAOYSA-N [Bi]=O.[I] Chemical compound [Bi]=O.[I] URVGHPZOLQFKJZ-UHFFFAOYSA-N 0.000 abstract description 4
- 230000006798 recombination Effects 0.000 abstract description 4
- 238000005215 recombination Methods 0.000 abstract description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 3
- 239000005864 Sulphur Substances 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 16
- 229910052797 bismuth Inorganic materials 0.000 description 10
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 10
- 239000003054 catalyst Substances 0.000 description 9
- 230000015556 catabolic process Effects 0.000 description 8
- 238000006731 degradation reaction Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 235000019441 ethanol Nutrition 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 244000137852 Petrea volubilis Species 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- PRXLCSIMRQFQMX-UHFFFAOYSA-N [O].[I] Chemical compound [O].[I] PRXLCSIMRQFQMX-UHFFFAOYSA-N 0.000 description 4
- 238000005119 centrifugation Methods 0.000 description 4
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 4
- STZCRXQWRGQSJD-UHFFFAOYSA-M sodium;4-[[4-(dimethylamino)phenyl]diazenyl]benzenesulfonate Chemical compound [Na+].C1=CC(N(C)C)=CC=C1N=NC1=CC=C(S([O-])(=O)=O)C=C1 STZCRXQWRGQSJD-UHFFFAOYSA-M 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- BDJYZEWQEALFKK-UHFFFAOYSA-N bismuth;hydrate Chemical compound O.[Bi] BDJYZEWQEALFKK-UHFFFAOYSA-N 0.000 description 3
- 238000004090 dissolution Methods 0.000 description 3
- 229960004756 ethanol Drugs 0.000 description 3
- 239000004519 grease Substances 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 125000000913 palmityl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- HRHBQGBPZWNGHV-UHFFFAOYSA-N azane;bromomethane Chemical compound N.BrC HRHBQGBPZWNGHV-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229910000416 bismuth oxide Inorganic materials 0.000 description 2
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- BULVZWIRKLYCBC-UHFFFAOYSA-N phorate Chemical compound CCOP(=S)(OCC)SCSCC BULVZWIRKLYCBC-UHFFFAOYSA-N 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- XQQSWXUDAPLMKD-UHFFFAOYSA-N N,N-dimethylheptadecan-1-amine hydrobromide Chemical compound Br.CCCCCCCCCCCCCCCCCN(C)C XQQSWXUDAPLMKD-UHFFFAOYSA-N 0.000 description 1
- 238000005411 Van der Waals force Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000003373 anti-fouling effect Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000002178 crystalline material Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- STZCRXQWRGQSJD-GEEYTBSJSA-M methyl orange Chemical compound [Na+].C1=CC(N(C)C)=CC=C1\N=N\C1=CC=C(S([O-])(=O)=O)C=C1 STZCRXQWRGQSJD-GEEYTBSJSA-M 0.000 description 1
- 229940012189 methyl orange Drugs 0.000 description 1
- 239000004005 microsphere Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002159 nanocrystal Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 239000011941 photocatalyst Substances 0.000 description 1
- 238000000103 photoluminescence spectrum Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- AISMNBXOJRHCIA-UHFFFAOYSA-N trimethylazanium;bromide Chemical compound Br.CN(C)C AISMNBXOJRHCIA-UHFFFAOYSA-N 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000011787 zinc oxide Substances 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
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/06—Halogens; Compounds thereof
-
- B01J35/23—
-
- B01J35/39—
-
- 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
- B01J37/0215—Coating
- B01J37/0219—Coating the coating containing organic compounds
-
- 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
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
-
- 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
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
-
- 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
- C08K2003/3009—Sulfides
-
- 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
- C08K2003/3009—Sulfides
- C08K2003/3027—Sulfides of cadmium
Abstract
The present invention relates to a kind of preparation methods of photocatalysis super-hydrophobic coat, the present invention, which modifies BiOI/MoS2/CdS nano particle by low-surface energy substance, can both increase the roughness of coating, the low-surface-energy of coating can be reduced again, make coating that there is efficient hydrophobic effect, cadmium sulfide itself has preferable adsorptivity and photocatalytic, but its band gap is wide, photo-generate electron-hole is to recombination rate height, and the gap band of iodine oxygen bismuth is very narrow, BiOI/MoS2/CdS couples the hetero-junctions to be formed, so that the photocatalysis performance of composite material is greatly improved, cadmium sulfide, iodine oxygen bismuth and molybdenum disulfide are all nano materials, furthermore the present invention selects nine aqueous sodium persulfates that can obtain the small cadmium sulfide nanoparticles of size as sulphur source, improve the hydrophobic performance of super-hydrophobic coat, and also improve wear-resisting property Power.
Description
Technical field
The invention belongs to super hydrophobic material technical fields, and in particular to a kind of preparation method of photocatalysis super-hydrophobic coat.
Background technique
Body surface of the water contact angle greater than 90 ° has hydrophobicity, and body surface of the water contact angle at 150 ° or more
With super-hydrophobicity, super hydrophobic surface not only hydrophobic also oleophobic.Super hydrophobic surface is had excellent performance, therefore in many fields, such as certainly
The fields such as cleaning, anticorrosive, ice-covering-proof, drag reduction, antifouling are with a wide range of applications.With the rapid development of economy, modern
It builds the glass largely used and high building exterior wall inevitably can be attached by some organic or inorganic dirts because being chronically exposed in the Nature
, artificial cleaning because its low efficiency, cost is big, risk is high due to be difficult to realize.Therefore it is necessary to develop with photocatalysis
Super-hydrophobic automatic cleaning not only may be implemented in active super-hydrophobic coat, but also organic dirt that can degrade under the irradiation of visible light
Object is contaminated, further realizes the function of its self-cleaning.
At present for the study limitation of the self-cleaning performance of super-hydrophobic automatic cleaning coating in taking away parent using washing away for water droplet
In terms of aqueous pollutant, and it is less for the research of photocatalytic degradation oiliness organic pollutant, and research has largely been confined to
The research of the common nano materials such as the active titanium dioxide of ultraviolet catalytic, zinc oxide.Since ultraviolet light only accounts for sunlight
5%, the utilization this severely limits the material with photocatalytic activity to nature sunlight, and common inorganic nano material
Since the specific surface knot of itself is big, lead to its bad dispersibility, aggregate not of uniform size easy to form not only seriously affects
The performance of its photocatalytic activity, also will affect hydrophobic performance.
For these reasons, the present invention is specifically proposed.
Summary of the invention
In order to solve problem above of the existing technology, the present invention provides a kind of preparations of photocatalysis super-hydrophobic coat
Method, super-hydrophobic coat of the invention are mainly made of bismuth oxyiodide/molybdenum disulfide/cadmium sulfide photocatalytic nanometer particle, iodine oxygen
Change bismuth/molybdenum disulfide/cadmium sulfide photocatalysis performance to be greatly improved, the addition of cadmium sulfide not only increases photocatalytic
Can, the ability of degradation of organic substances significantly improves, and self-cleaning ability improves, and also improves hydrophobic performance.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of preparation method of photocatalysis super-hydrophobic coat, includes the following steps:
(1) it substrate pretreated: is immersed in the NaOH solution that mass fraction is 2-4%, heating, then soaks after matrix is derusted
Bubble is cleaned by ultrasonic 5min in dehydrated alcohol, and taking-up is cleaned with deionized water, is immersed in 3-5min in hydrochloric acid solution again, is spent
Ionized water cleaning, it is dry, it is spare；
(2) preparation of bismuth oxyiodide: five nitric hydrate bismuths and iodine oxidation potassium are added separately to dissolve in ethylene glycol,
The ethylene glycol solution of potassium iodide is slowly added under stiring in the ethylene glycol solution of five nitric hydrate bismuths, stirs 0.8-1.2h
After move into reaction kettle, heating is reacted, cooling, is centrifuged, cleaning obtains bismuth oxyiodide；
(3)BiOI/MoS2Preparation: sodium molybdate is dissolved in deionized water, thioacetamide is added under stirring conditions,
0.8-1.2h is stirred, the bismuth oxyiodide of addition step (2) preparation stirs 3.5-4.5h, heats 180 DEG C in a kettle and carries out instead
Should for 24 hours, centrifugation, dry 8h, obtains BiOI/MoS at 60 DEG C2；
(4)BiOI/MoS2The preparation of/CdS: chloride hydrate cadmium is added to the aqueous solution of cetyl trimethylammonium bromide
In, ultrasonic disperse is formed uniformly solution A, and nine water vulcanized sodium are added in the aqueous solution of cetyl trimethylammonium bromide, surpasses
Sound is uniformly dispersed to form solution B, and solution B is added drop-wise in solution A dropwise, forms mixed solution, and step (3) is taken to prepare
The BiOI/MoS of 0.0343-0.1028g2It is dissolved in stir evenly in 10ml deionized water and be added in the mixed solution,
8-12h is stirred, heating is reacted, and it is cooling, it is centrifugated, it is dry, obtain BiOI/MoS2/CdS；
(5) low-surface energy substance modifies BiOI/MoS2/ CdS: dimethyl silicone polymer is uniformly mixed with curing agent, so
It is added to the in the mixed solvent of hexane and dehydrated alcohol afterwards, ultrasonic 25-35min is uniformly dispersed, and step (4) preparation is then added
BiOI/MoS2/ CdS, ultrasonic 25-35min are uniformly dispersed, and spray to matrix surface, solidify 0.8-1.2h at 110-130 DEG C,
Obtain the photocatalysis super-hydrophobic coat.
The photocatalysis performance of super-hydrophobic coat of the invention and the dominant mechanism of hydrophobic performance are: bismuth oxyiodide be it is a kind of compared with
The recombination rate of the semiconductor of narrow band gap, and the greater band gap of cadmium sulfide, its photo-generate electron-hole pair is high, and molybdenum disulfide is class
Like the two-dimensional layered structure of graphene, interlayer is connected with Van der Waals force, the large specific surface area of the molybdenum disulfide of layer structure, iodine oxygen
Hetero-junctions can be formed by changing the composite photo-catalyst combination of bismuth/molybdenum disulfide/cadmium sulfide, be exposed to the active site on its surface compared with
More, absorption property is good, can promote electronics and transfers quickly, and has lower photoluminescence spectra, can reduce light induced electron-sky
Cave pair it is compound, to improve the photocatalysis performance of catalyst.Catalyst forms electron-hole pair under the action of light.Iodine oxygen
Change electronics (e in bismuth/molybdenum disulfide/cadmium sulfide valence band-) be excited to be dealt on higher energy conduction band, it is respectively formed in valence band and conduction band strong
Hole (the h of reproducibility+) and strong oxidizing property electronics e-, e-It reacts to form negative oxygen ion O with oxygen2 -, h+And O2 -It can be with organic dirt
Dye object reaction achievees the purpose that degradation, and low-surface energy substance modifies BiOI/MoS2/ CdS nano particle is added in coating can be with
Enable coating surface that there is extremely low surface, is conducive to improve hydrophobic performance.
Further, the matrix is glass, copper sheet or aluminium flake.
Further, heating temperature is 75-85 DEG C in step (1), heating time 4-6min.
Further, the mass volume ratio of five nitric hydrate bismuths and ethylene glycol is 1.46g:35-45ml, iodine in step (2)
The mass volume ratio for changing potassium and ethylene glycol is 0.5g:35-45ml.
Further, heating temperature is 140-160 DEG C in step (2), reaction time 12-24h.
Further, sodium molybdate and the mass volume ratio of deionized water are 0.015-0.045g:60ml, sulphur in step (3)
It is 1:3 for the molar ratio of acetamide and sodium molybdate, the mass ratio of sodium molybdate and bismuth oxyiodide is 0.015-0.045:1.
Further, in step (3) in solution A chloride hydrate cadmium, cetyl trimethylammonium bromide and water mass body
Product is than being 2.2841g:0.05-0.1g:20ml, the quality of nine water vulcanized sodium, cetyl trimethylammonium bromide and water in solution B
Volume ratio is 2.4018g:0.05-0.1g:20ml.
Further, heating temperature is 120-180 DEG C, reaction time 4-12h, drying temperature 55-65 in step (4)
DEG C, drying time 10-14h.
Further, the mass ratio of hexane and dehydrated alcohol is 1:2, dimethyl silicone polymer and curing agent in step (5)
Mass ratio be 10:1.
Further, the curing agent is Sylgard184.
Further, the mass ratio of dimethyl silicone polymer and BiOI/CdS are 4:1-4 in step (5).
Compared with prior art, the invention has the benefit that
(1) cadmium sulfide itself has preferable adsorptivity and photocatalytic, but its band gap is wide, photo-generate electron-hole pair
Recombination rate is high, and the gap band of iodine oxygen bismuth is very narrow, BiOI/MoS2/ CdS couples the hetero-junctions to be formed, and can play synergistic effect,
The gap of material structure is reduced, surface area increases, and increases the position of composite catalyst high activity, accelerates transfer electronics, very
Photo-generate electron-hole is inhibited to occur well compound, the photocatalysis performance of composite material is greatly improved, composite catalyst material
Expect that photocatalytic degradation effect increases 2-3 times than pure catalyst, makes when BiOI/MoS2/CdS is added in super-hydrophobic coat
Coating is of great significance to environment purification simultaneously with hydrophobicity and photocatalytic；
(2) cadmium sulfide, iodine oxygen bismuth and molybdenum disulfide are all nano materials, and preparation process is easily assembled, in order to avoid
Because aggregation forms the biggish crystalline material of particle, after surfactant cetyl trimethyl ammonia bromide is added during the preparation process
The biggish nano crystal material of specific surface area is obtained, cetyl trimethylammonium bromide not only plays the role of stabilizer, but also plays
Inhibit the effect of excessive grain growth, furthermore the present invention selects nine aqueous sodium persulfates that can obtain the small cadmium sulfide of size as sulphur source
Nano particle, improves the hydrophobic performance of super-hydrophobic coat, and also improves wearability ability；
(3) BiOI/MoS is modified with dimethyl silicone polymer low-surface energy substance2/ CdS nano particle can both increase painting
The roughness of layer, and the low-surface-energy of coating can be reduced, make coating that there is efficient hydrophobic effect.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the scanning electron microscope (SEM) photograph of bismuth oxyiodide prepared by the embodiment of the present invention 1；
Fig. 2 is BiOI/MoS prepared by the embodiment of the present invention 12Scanning electron microscope (SEM) photograph；
Fig. 3 is BiOI/MoS prepared by the embodiment of the present invention 12The scanning electron microscope (SEM) photograph of/CdS；
Fig. 4 is C in test example 1 of the present inventiont/C0The graph of relation of value and time；
The contact angle of super-hydrophobic coat prepared by Fig. 5 embodiment of the present invention 2.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, technical solution of the present invention will be carried out below
Detailed description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art are obtained all without making creative work
Other embodiment belongs to the range that the present invention is protected.
Embodiment 1
A kind of preparation method of photocatalysis super-hydrophobic coat of the present embodiment, includes the following steps:
(1) substrate pretreated: the aluminium flake of 2cmx2cmx1cm is tentatively polished derusting with sand paper, is immersed in quality after derusting
6min is heated in the NaOH solution that score is 2%, and in water-bath at 75 DEG C of constant temperature and removes surface grease stain, then is immersed in anhydrous
It is cleaned by ultrasonic 5min in ethyl alcohol, taking-up is cleaned with deionized water, is immersed in 3- in the hydrochloric acid solution that concentration is 3mol/L again
5min is cleaned with deionized water, dry, spare；
(2) five nitric hydrate bismuth of 1.46g and 0.5g iodine oxidation potassium the preparation of bismuth oxyiodide: are added separately to 40ml second two
It is stirred 15min dissolution in alcohol completely, the ethylene glycol solution of potassium iodide is slowly added into five hydration nitre with vigorous stirring
In the ethylene glycol solution of sour bismuth, mixed solution moved into reaction kettle after stirring 1h, and at 140 DEG C heating reacted for 24 hours, to
Reaction kettle cooled to room temperature, product is centrifuged, and is respectively washed three times with dehydrated alcohol and deionized water, and iodine oxidation is obtained
Bismuth；
(3)BiOI/MoS2Preparation: the sodium molybdate of 0.015g is dissolved in 60ml deionized water, under stirring conditions plus
Enter thioacetamide, the molar ratio of thioacetamide and sodium molybdate is 1:3, stirs 0.8h, and the iodine of the 1g of step (2) preparation is added
Bismuth oxide stirs 3.5h, heats 180 DEG C in a kettle and is reacted for 24 hours, product is obtained after centrifugation, the dry 8h at 60 DEG C,
Obtain BiOI/MoS2；
(4)BiOI/MoS2The preparation of/CdS: the chloride hydrate cadmium of 2.2841g is added to containing 0.05g cetyl three
In the 20ml aqueous solution of methyl bromide ammonium, ultrasonic 20min is uniformly dispersed to form solution A, and the nine water vulcanized sodium of 2.4018g are added
Into the 20ml aqueous solution containing 0.05g cetyl trimethylammonium bromide, ultrasonic disperse is formed uniformly solution B, by solution B by
It is added drop-wise in solution A, forms mixed solution, the BiOI/MoS for the 0.0343g for taking step (3) to prepare2Be dissolved in 10ml go from
It stirs evenly and is added in the mixed solution in sub- water, stir 8-12h, hydro-thermal carries out reaction 12h at 120 DEG C, cooling
To room temperature, it is centrifugated product, dry 14h, obtains BiOI/MoS at 55 DEG C2/CdS；
(5) low-surface energy substance modifies BiOI/MoS2/ CdS: dimethyl silicone polymer and curing agent Sylgard184 are pressed
It is uniformly mixed according to mass ratio 10:1, wherein 0.8g is taken to be then added to the in the mixed solvent of 2.4g hexane and 4.8g dehydrated alcohol,
Ultrasonic 25min is uniformly dispersed, and the BiOI/MoS of step (4) preparation is then added2/ CdS, dimethyl silicone polymer and BiOI/
MoS2The mass ratio of/CdS is 4:1, and ultrasonic 25min is uniformly dispersed, and is sprayed directly into matrix surface, spray distance 20-25cm, In
Solidify 1.2h at 110 DEG C, obtains the photocatalysis super-hydrophobic coat.
The scanning electron microscope (SEM) photograph of bismuth oxyiodide manufactured in the present embodiment is as shown in Figure 1, BiOI/MoS2Scanning electron microscope (SEM) photograph as scheme
Shown in 2, BiOI/MoS2The scanning electron microscope (SEM) photograph of/CdS is as shown in Figure 3.
It can significantly observe that BiOI is that the class that nanometer sheet forms is spheroidal flower-shaped from figure, interlayer is evenly distributed with
Various microcellular structures, there are many high activity points with photocatalysis for the exposure of BiOI sheet surfaces, and BiOI/MoS2 is coupled
When, it is formed and is in close contact between BiOI and the interface of MoS2, the partial pore on the surface BiOI can be capped, therefore cannot be added
More MoS2, the active site for being not so exposed to the surface BiOI can be occluded, and reach reverse effect, therefore the present invention instead
BiOI、MoS2, CdS three select specific ratio.BiOI/MoS2/CdS nano-material surface prepared by the present invention is by size
Different cadmium sulfide nano microballoon compositions, and BiOI/MoS2 nano particle is distributed between microsphere surface and interface, it is compact
Structure is conducive to fast transfer electronics, the low electron-hole pair of recombination rate is formed, to improve the photocatalysis performance of catalyst.
Embodiment 2
A kind of preparation method of photocatalysis super-hydrophobic coat of the present embodiment, includes the following steps:
(1) substrate pretreated: the copper sheet of 2cmx2cmx1cm is tentatively polished derusting with sand paper, is immersed in quality after derusting
5min is heated in the NaOH solution that score is 3%, and in water-bath at 80 DEG C of constant temperature and removes surface grease stain, then is immersed in anhydrous
It is cleaned by ultrasonic 5min in ethyl alcohol, taking-up is cleaned with deionized water, is immersed in 3- in the hydrochloric acid solution that concentration is 3mol/L again
5min is cleaned with deionized water, dry, spare；
(2) five nitric hydrate bismuth of 1.46g and 0.5g iodine oxidation potassium the preparation of bismuth oxyiodide: are added separately to 35ml second two
It is stirred 15min dissolution in alcohol completely, the ethylene glycol solution of potassium iodide is slowly added into five hydration nitre with vigorous stirring
In the ethylene glycol solution of sour bismuth, mixed solution is moved into reaction kettle after stirring 1h, and heating carries out reaction 18h at 150 DEG C, to
Reaction kettle cooled to room temperature, product is centrifuged, and is respectively washed three times with dehydrated alcohol and deionized water, and iodine oxidation is obtained
Bismuth；
(3)BiOI/MoS2Preparation: the sodium molybdate of 0.025g is dissolved in 60ml deionized water, under stirring conditions plus
Enter thioacetamide, the molar ratio of thioacetamide and sodium molybdate is 1:3, stirs 1h, and the iodine oxygen of the 1g of step (2) preparation is added
Change bismuth and stir 4h, heat 180 DEG C in a kettle and reacted for 24 hours, product is obtained after centrifugation, dry 8h, obtains at 60 DEG C
BiOI/MoS2；
(4)BiOI/MoS2The preparation of/CdS: the chloride hydrate cadmium of 2.2841g is added to containing 0.075g cetyl
In the 20ml aqueous solution of trimethylammonium bromide, ultrasonic 20min is uniformly dispersed to form solution A, and the nine water vulcanized sodium of 2.4018g are added
Enter into the 20ml aqueous solution containing 0.075g cetyl trimethylammonium bromide, ultrasonic disperse is formed uniformly solution B, by solution
B is added drop-wise in solution A dropwise, forms mixed solution, the BiOI/MoS for the 0.0799g for taking step (3) to prepare210ml is dissolved in go
It stirs evenly and is added in the mixed solution in ionized water, stir 8-12h, hydro-thermal carries out reaction 8h at 150 DEG C, cooling
To room temperature, it is centrifugated product, dry 12h, obtains BiOI/MoS at 60 DEG C2/CdS；
(5) low-surface energy substance modifies BiOI/MoS2/ CdS: dimethyl silicone polymer and curing agent Sylgard184 are pressed
It is uniformly mixed according to mass ratio 10:1, wherein 0.8g is taken to be then added to the in the mixed solvent of 2.6g hexane and 5.2g dehydrated alcohol,
Ultrasonic 30min is uniformly dispersed, and the BiOI/MoS of step (4) preparation is then added2/ CdS, dimethyl silicone polymer and BiOI/
MoS2The mass ratio of/CdS is 4:3, and ultrasonic 30min is uniformly dispersed, and is sprayed directly into matrix surface, spray distance 20-25cm, In
Solidify 1h at 120 DEG C, obtains the photocatalysis super-hydrophobic coat.
The present inventor is also to bismuth oxyiodide manufactured in the present embodiment, BiOI/MoS2、BiOI/MoS2/ CdS is determined sweep respectively
Electron microscope is retouched, it is as a result almost the same with embodiment 1, since length is limited, will not enumerate.
Embodiment 3
A kind of preparation method of photocatalysis super-hydrophobic coat of the present embodiment, includes the following steps:
(1) substrate pretreated: the aluminium flake of 2cmx2cmx1cm is tentatively polished derusting with sand paper, is immersed in quality after derusting
4min is heated in the NaOH solution that score is 4%, and in water-bath at 85 DEG C of constant temperature and removes surface grease stain, then is immersed in anhydrous
It is cleaned by ultrasonic 5min in ethyl alcohol, taking-up is cleaned with deionized water, is immersed in 3- in the hydrochloric acid solution that concentration is 3mol/L again
5min is cleaned with deionized water, dry, spare；
(2) five nitric hydrate bismuth of 1.46g and 0.5g iodine oxidation potassium the preparation of bismuth oxyiodide: are added separately to 45ml second two
It is stirred 15min dissolution in alcohol completely, the ethylene glycol solution of potassium iodide is slowly added into five hydration nitre with vigorous stirring
In the ethylene glycol solution of sour bismuth, mixed solution is moved into reaction kettle after stirring 1.2h, and heating carries out reaction 12h at 160 DEG C,
To reaction kettle cooled to room temperature, product is centrifuged, and is respectively washed three times with dehydrated alcohol and deionized water, iodine oxygen is obtained
Change bismuth；
(3)BiOI/MoS2Preparation: the sodium molybdate of 0.045g is dissolved in 60ml deionized water, under stirring conditions plus
Enter thioacetamide, the molar ratio of thioacetamide and sodium molybdate is 1:3, stirs 1.2h, and the iodine of the 1g of step (2) preparation is added
Bismuth oxide stirs 4.5h, heats 180 DEG C in a kettle and is reacted for 24 hours, product is obtained after centrifugation, the dry 8h at 60 DEG C,
Obtain BiOI/MoS2；
(4)BiOI/MoS2The preparation of/CdS: the chloride hydrate cadmium of 2.2841g is added to containing 0.1g cetyl three
In the 20ml aqueous solution of methyl bromide ammonium, ultrasonic 20min is uniformly dispersed to form solution A, and the nine water vulcanized sodium of 2.4018g are added
Into the 20ml aqueous solution containing 0.1g cetyl trimethylammonium bromide, ultrasonic disperse is formed uniformly solution B, by solution B by
It is added drop-wise in solution A, forms mixed solution, the BiOI/MoS for the 0.1028g for taking step (3) to prepare2Be dissolved in 10ml go from
It stirs evenly and is added in the mixed solution in sub- water, stir 8-12h, hydro-thermal carries out reaction 4h at 180 DEG C, is cooled to
Room temperature is centrifugated product, and dry 10h, obtains BiOI/MoS at 65 DEG C2/CdS；
(5) low-surface energy substance modifies BiOI/MoS2/ CdS: dimethyl silicone polymer and curing agent Sylgard184 are pressed
It is uniformly mixed according to mass ratio 10:1, wherein 0.8g is taken to be then added to the in the mixed solvent of 3.0g hexane and 6g dehydrated alcohol, surpassed
Sound 35min is uniformly dispersed, and the BiOI/MoS of step (4) preparation is then added2/ CdS, dimethyl silicone polymer and BiOI/MoS2/
The mass ratio of CdS is 1:1, and ultrasonic 35min is uniformly dispersed, and is sprayed directly into matrix surface, spray distance 20-25cm, at 130 DEG C
Lower solidification 0.8h obtains the photocatalysis super-hydrophobic coat.
The present inventor is also to bismuth oxyiodide manufactured in the present embodiment, BiOI/MoS2、BiOI/MoS2/ CdS is determined sweep respectively
Electron microscope is retouched, it is as a result almost the same with embodiment 1, since length is limited, will not enumerate.
Comparative example 1
This comparative example prepares photocatalysis super-hydrophobic coat using method same as Example 1, the difference is that, it saves
It goes step (3), step (4) is the preparation of BiOI/CdS, and step (5) is that low-surface energy substance modifies BiOI/CdS, is finally prepared
Super-hydrophobic coat in do not contain molybdenum disulfide.
Comparative example 2
This comparative example prepares photocatalysis super-hydrophobic coat using method same as Example 1, the difference is that, it saves
It goes step (4), step (5) is that low-surface energy substance modifies BiOI/MoS2, without containing vulcanization in finally prepd super-hydrophobic coat
Cadmium.
Comparative example 3
This comparative example prepares photocatalysis super-hydrophobic coat using method same as Example 1, the difference is that, it saves
Step (3) and step (4) are gone, step (5) is that low-surface energy substance modifies BiOI, is not contained in finally prepd super-hydrophobic coat
Molybdenum disulfide and cadmium sulfide, containing only the bismuth oxyiodide by modification.
Test example 1
The BiOI/MoS of testing example 1-3 preparation respectively2/ CdS and comparative example 1 prepare BiOI/CdS, prepared by comparative example 2
BiOI/MoS2, BiOI prepared by comparative example 3 takes each raw material 30mg that 50ml is added the degradation property of methyl orange solution respectively
20mg/L methyl orange solution in, first carry out 30min dark reaction reach adsorption equilibrium, irradiated under 20W ultraviolet lamp, catalysis reaction
The reaction of device entering light, investigates the C under different timet/C0Value, CtFor the concentration of t moment methyl orange solution, C0For at the beginning of methyl orange solution
Beginning concentration, Ct/C0It is worth smaller, shows that the degradation rate of methyl orange is higher, degradation rate is (C0-Ct)/C0 × 100%, as a result such as Fig. 4
It is shown.
From fig. 4, it can be seen that at the same time, the C of comparative example 1-3t/C0It is worth higher than embodiment 1-3, illustrates pair
The Photocatalytic Degradation Property of ratio 1-3 is poor, and the C under it can be seen that 3 phase of comparative example in comparative example 1-3 in the same timet/C0Value ratio
The equal height of comparative example 1 and 2 illustrates that the degradation property for containing only bismuth oxyiodide is poor, and two kinds compound to improve degradation property, still
The degradation property compound significantly lower than three kinds of substances, illustrates BiOI/MoS2/ CdS couples the hetero-junctions to be formed, and can play association
Same-action reduces the gap of material structure, and surface area increases, and increases the position of composite catalyst high activity, accelerates transfer
Electronics inhibits photo-generate electron-hole to occur compound well, and the photocatalysis performance of composite material is greatly improved, compound
Catalyst material photocatalytic degradation effect increases 2-3 times than pure catalyst.
Test example 2
The super-hydrophobic coat respectively prepared by embodiment 1-3 and comparative example 1-3 carries out wear-resisting property test, test method:
The matrix for being coated with super-hydrophobic coat is fixed on horizontal desktop, is sequentially placed into the sand paper of 1000CW and the counterweight of 50g, will
Sand paper drags the distance of 10cm, the contact angle of measurement coating after this behaviour is 0,20,40,60,80,100 time.Contact angle determination side
Method: with contact angle tester measurement water droplet in film surface contact angle, after contact angle values are averaged by 5 random site measurements
It obtains, static contact angle is using drop method (sessile drop) measurement of lying, and (i.e. static contact angle is greater than 150 ° to super hydrophobic surface
Surface) measurement when, when measurement, uniformly uses 5 μ L water droplets, and test result is shown in Table 1.
Table 1
As it can be seen from table 1 the super-hydrophobic coat of embodiment 1-3 and comparative example 1-3 handles identical dragging number, implement
The contact angle reduction of example 1-3 is less, illustrates that the wear-resisting property of the super-hydrophobic coat of preparation of the invention is preferable, when dragging 0 time,
Contact angle of the invention is all larger than the contact angle of comparative example 1-3, it was demonstrated that super-hydrophobic coat of the invention has preferable hydrophobicity
Energy.Wherein, the contact angle for the super-hydrophobic coat that prepared by embodiment 2 is as shown in figure 5, since length is limited, other embodiments and right
The contact angle of ratio is not being listed one by one.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of preparation method of photocatalysis super-hydrophobic coat, which comprises the steps of:
(1) it substrate pretreated: is immersed in the NaOH solution that mass fraction is 2-4%, heating, then is immersed in after matrix is derusted
It is cleaned by ultrasonic 5min in dehydrated alcohol, taking-up is cleaned with deionized water, is immersed in 3-5min in hydrochloric acid solution again, is used deionization
Water cleaning, it is dry, it is spare；
(2) preparation of bismuth oxyiodide: five nitric hydrate bismuths and iodine oxidation potassium are added separately to dissolve in ethylene glycol, are being stirred
It mixes in the lower ethylene glycol solution that the ethylene glycol solution of potassium iodide is slowly added into five nitric hydrate bismuths, stirring 0.8-1.2h is moved back
Entering reaction kettle, heating is reacted, and it is cooling, it is centrifuged, cleaning obtains bismuth oxyiodide；
(3)BiOI/MoS2Preparation: sodium molybdate is dissolved in deionized water, thioacetamide is added under stirring conditions, stir
0.8-1.2h, the bismuth oxyiodide that step (2) preparation is added stir 3.5-4.5h, heat 180 DEG C in a kettle and reacted
For 24 hours, it is centrifuged, dry 8h, obtains BiOI/MoS at 60 DEG C2；
(4)BiOI/MoS2The preparation of/CdS: chloride hydrate cadmium is added in the aqueous solution of cetyl trimethylammonium bromide, is surpassed
Sound is uniformly dispersed to form solution A, nine water vulcanized sodium is added in the aqueous solution of cetyl trimethylammonium bromide, ultrasonic disperse
It is formed uniformly solution B, solution B is added drop-wise in solution A dropwise, forms mixed solution, the 0.0343- for taking step (3) to prepare
The BiOI/MoS of 0.1028g2It is dissolved in stir evenly in 10ml deionized water and be added in the mixed solution, stir 8-
12h, heating are reacted, cooling, are centrifugated, dry, obtain BiOI/MoS2/CdS；
(5) low-surface energy substance modifies BiOI/MoS2/ CdS: dimethyl silicone polymer is uniformly mixed with curing agent, is then added
To the in the mixed solvent of hexane and dehydrated alcohol, ultrasonic 25-35min is uniformly dispersed, and the BiOI/ of step (4) preparation is then added
MoS2/ CdS, ultrasonic 25-35min are uniformly dispersed, and spray to matrix surface, solidify 0.8-1.2h at 110-130 DEG C, obtain institute
The photocatalysis super-hydrophobic coat stated.
2. according to right want 1 described in photocatalysis super-hydrophobic coat preparation method, which is characterized in that the matrix be glass
Glass, copper sheet or aluminium flake.
3. according to right want 1 described in photocatalysis super-hydrophobic coat preparation method, which is characterized in that heating temperature in step (1)
Degree is 75-85 DEG C, heating time 4-6min.
4. according to right want 1 described in photocatalysis super-hydrophobic coat preparation method, which is characterized in that in step (2) five hydration
The mass volume ratio of bismuth nitrate and ethylene glycol is 1.46g:35-45ml, and the mass volume ratio of potassium iodide and ethylene glycol is 0.5g:
35-45ml。
5. according to right want 1 described in photocatalysis super-hydrophobic coat preparation method, which is characterized in that heating temperature in step (2)
Degree is 140-160 DEG C, reaction time 12-24h.
6. according to right want 1 described in photocatalysis super-hydrophobic coat preparation method, which is characterized in that sodium molybdate in step (3)
It is 0.015-0.045g:60ml with the mass volume ratio of deionized water, the molar ratio of thioacetamide and sodium molybdate is 1:3, molybdenum
The mass ratio of sour sodium and bismuth oxyiodide is 0.015-0.045:1.
7. according to right want 1 described in photocatalysis super-hydrophobic coat preparation method, which is characterized in that in step (4) in solution A
The mass volume ratio of chloride hydrate cadmium, cetyl trimethylammonium bromide and water is 2.2841g:0.05-0.1g:20ml, solution B
In nine water vulcanized sodium, cetyl trimethylammonium bromide and water mass volume ratio be 2.4018g:0.05-0.1g:20ml.
8. according to right want 1 described in photocatalysis super-hydrophobic coat preparation method, which is characterized in that heating temperature in step (4)
Degree is 120-180 DEG C, reaction time 4-12h, and drying temperature is 55-65 DEG C, drying time 10-14h.
9. according to right want 1 described in photocatalysis super-hydrophobic coat preparation method, which is characterized in that in step (5) hexane with
The mass ratio of dehydrated alcohol is 1:2, and the mass ratio of dimethyl silicone polymer and curing agent is 10:1.
10. according to right want 1 described in photocatalysis super-hydrophobic coat preparation method, which is characterized in that poly- diformazan in step (5)
Radical siloxane and BiOI/MoS2The mass ratio of/CdS is 4:1-4.
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| CN111454707A (en) * | 2020-04-02 | 2020-07-28 | 中国石油大学(北京) | Preparation method and application of 2D nanosheet oil displacement agent |
| CN115571947A (en) * | 2022-10-29 | 2023-01-06 | 复旦大学 | Photoelectric catalytic reactor for inactivating microorganisms in water |
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