CN105709843B - A kind of TiO with high efficiency photocatalysis activity2Thin film low temperature preparation method - Google Patents
A kind of TiO with high efficiency photocatalysis activity2Thin film low temperature preparation method Download PDFInfo
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- CN105709843B CN105709843B CN201610133995.8A CN201610133995A CN105709843B CN 105709843 B CN105709843 B CN 105709843B CN 201610133995 A CN201610133995 A CN 201610133995A CN 105709843 B CN105709843 B CN 105709843B
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- 230000001699 photocatalysis Effects 0.000 title claims abstract description 41
- 238000007146 photocatalysis Methods 0.000 title claims abstract description 40
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 119
- 239000010408 film Substances 0.000 claims abstract description 78
- 239000000654 additive Substances 0.000 claims abstract description 72
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 69
- 230000000996 additive effect Effects 0.000 claims abstract description 68
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims abstract description 68
- 150000003608 titanium Chemical class 0.000 claims abstract description 54
- 239000000758 substrate Substances 0.000 claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000008367 deionised water Substances 0.000 claims abstract description 43
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 43
- 235000019441 ethanol Nutrition 0.000 claims abstract description 35
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910017604 nitric acid Inorganic materials 0.000 claims abstract description 27
- 239000010409 thin film Substances 0.000 claims abstract description 14
- 230000032683 aging Effects 0.000 claims abstract description 7
- 230000000694 effects Effects 0.000 claims description 24
- 238000005507 spraying Methods 0.000 claims description 23
- 238000003756 stirring Methods 0.000 claims description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 14
- 239000002202 Polyethylene glycol Substances 0.000 claims description 13
- 229920001223 polyethylene glycol Polymers 0.000 claims description 13
- VXUYXOFXAQZZMF-UHFFFAOYSA-N titanium(IV) isopropoxide Chemical compound CC(C)O[Ti](OC(C)C)(OC(C)C)OC(C)C VXUYXOFXAQZZMF-UHFFFAOYSA-N 0.000 claims description 11
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 claims description 10
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 9
- 239000002952 polymeric resin Substances 0.000 claims description 9
- 229920003002 synthetic resin Polymers 0.000 claims description 9
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 6
- DCKVFVYPWDKYDN-UHFFFAOYSA-L oxygen(2-);titanium(4+);sulfate Chemical group [O-2].[Ti+4].[O-]S([O-])(=O)=O DCKVFVYPWDKYDN-UHFFFAOYSA-L 0.000 claims description 6
- 229920001296 polysiloxane Polymers 0.000 claims description 6
- 229910000348 titanium sulfate Inorganic materials 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 4
- 229920002523 polyethylene Glycol 1000 Polymers 0.000 claims description 4
- 229920002535 Polyethylene Glycol 1500 Polymers 0.000 claims description 3
- 229920002582 Polyethylene Glycol 600 Polymers 0.000 claims description 3
- 229920002593 Polyethylene Glycol 800 Polymers 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 claims description 3
- 125000002777 acetyl group Chemical class [H]C([H])([H])C(*)=O 0.000 claims description 3
- 229920002678 cellulose Polymers 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- VUYXVWGKCKTUMF-UHFFFAOYSA-N tetratriacontaethylene glycol monomethyl ether Chemical compound COCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCO VUYXVWGKCKTUMF-UHFFFAOYSA-N 0.000 claims description 3
- 229920002554 vinyl polymer Polymers 0.000 claims description 3
- 239000004925 Acrylic resin Substances 0.000 claims description 2
- 229920000178 Acrylic resin Polymers 0.000 claims description 2
- -1 Pioloform Polymers 0.000 claims description 2
- 229920000604 Polyethylene Glycol 200 Polymers 0.000 claims description 2
- 230000029087 digestion Effects 0.000 claims description 2
- NCWQJOGVLLNWEO-UHFFFAOYSA-N methylsilicon Chemical compound [Si]C NCWQJOGVLLNWEO-UHFFFAOYSA-N 0.000 claims description 2
- 229920000728 polyester Polymers 0.000 claims description 2
- 229920002565 Polyethylene Glycol 400 Polymers 0.000 claims 1
- 239000002253 acid Substances 0.000 claims 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 20
- 239000000853 adhesive Substances 0.000 abstract description 14
- 230000001070 adhesive effect Effects 0.000 abstract description 14
- 230000015556 catabolic process Effects 0.000 abstract description 11
- 238000006731 degradation reaction Methods 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000004544 sputter deposition Methods 0.000 abstract description 2
- 238000002156 mixing Methods 0.000 description 20
- 239000005457 ice water Substances 0.000 description 13
- 239000000243 solution Substances 0.000 description 13
- 239000000203 mixture Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 8
- 238000012512 characterization method Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 7
- 238000013019 agitation Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000009776 industrial production Methods 0.000 description 4
- 229910052719 titanium Inorganic materials 0.000 description 4
- 239000010936 titanium Substances 0.000 description 4
- 238000006555 catalytic reaction Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000012808 vapor phase Substances 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical group [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000003466 welding Methods 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
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/26—Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24
- B01J31/38—Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24 of titanium, zirconium or hafnium
-
- 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
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
- B01J21/063—Titanium; Oxides or hydroxides thereof
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
-
- B01J35/30—
-
- B01J35/39—
-
- B01J35/59—
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Catalysts (AREA)
Abstract
A kind of TiO with high efficiency photocatalysis activity2Thin film low temperature preparation method, by deionized water and concentrated nitric acid with volume ratio for 100:1 premixing is uniform, adds titanium salt, is uniformly mixed, and ageing obtains TiO2Colloidal sol, by TiO2Colloidal sol is uniformly mixed after being diluted with ethyl alcohol with additive, is finally loaded to substrate surface at room temperature, is obtained the TiO with high efficiency photocatalysis activity2Film.The present invention is by using to TiO2Additive is added in colloidal sol, due to the presence of additive itself cohesive force so that film is significantly improved in the load capacity and adhesive force of substrate surface, improves the adhesion strength between film and substrate and the degradation efficiency to NO well.It can be loaded in substrate at room temperature in the present invention, form film, technique is easily achieved, and overcomes when using high temperature plated film in the prior art, it is complicated to pass through the equipment for sputtering and using so that the high problem of the manufacturing cost of film.
Description
Technical field
The present invention relates to photocatalysis technology practical application area more particularly to a kind of TiO with high efficiency photocatalysis activity2
Thin film low temperature preparation method.
Background technology
The use of photocatalysis technology in daily life is increasingly extensive.Catalysis material is loaded in substrate, such as is built
Build exterior wall, windshield, toilet wall, the regions such as kitchen wall hearth, be conducive to be attached to its surface dust,
Bacterium, oil stain and other pollutions carry out degradation removing.
The means that catalysis material is loaded to glass surface at present mainly have vapor phase method and liquid phase method, vapor phase method plated film
Advantage is institute's plated film even compact, the disadvantage is that equipment is expensive, it is complicated for operation, and while the combination of the film and substrate prepared is not firm enough
Gu.And liquid phase method includes mainly chemical reaction dipping plated film and electrochemical reaction dipping plated film.Its advantage is that equipment is simple, at
This is cheap, but the film forming period for impregnating plated film is longer, while there is also the not strong problems of the binding force of film and substrate.Patent
CN102864481A uses magnetically controlled sputter method in the titanium film of substrate deposit column structure, then passes through anodic titanium film preparation
The titanium deoxid film of porous structure；Patent CN1400185 prepares high titanium deoxid film using infusion process, at the same to film into
The processing of row subsequent high temperature, the photocatalysis film being had excellent performance；Patent CN103949233A passes through the nano-TiO to preparation2
Suspension is ultrasonically treated, and TiO is obtained2Colloidal solution, and then plated film is carried out using dip-coating method.Exist in above-mentioned patent
Film and substrate binding force is not strong or the problem of preparation process complexity, so how quickly and easily real in substrate
The film load now to work well, is highly study the problem of.
Auxiliary agent be also known as additive be improved product quality and yield in industrial production in order to improve production process or in order to
Assign the product auxiliary chemicals that certain application performance is added.In numerous additives, adhesive is in current industrial production
Application be at most be also widest.The effects that it is by adherency and the cohesion at interface, makes two or more material
Material links together.Adhesive bonding technique be develop a more mature adhesive technology at present, and with welding, be mechanically connected and be known as
Contemporary three big interconnection techniques.The performance and service life of film can be greatly improved by the use of adhesive.Spray-on process is
Membrane means are commonly plated in industrial production at present, the technology is simple using equipment, is easy to large area operation, to the utilization rate of material
Height, preparation speed is fast, of low cost, is widely used in industrial production.Film by the technology for substrate surface loads, very well
Ground realizes the practical application of catalysis material.
Invention content
The purpose of the present invention is to provide a kind of TiO with high efficiency photocatalysis activity2Thin film low temperature preparation method, the party
Method improves the performance of film by the use of additive, and simple and reliable, and the binding force of film and substrate is stronger.
In order to realize that above-mentioned target, the present invention adopt the following technical scheme that：
A kind of TiO with high efficiency photocatalysis activity2Thin film low temperature preparation method, by deionized water and concentrated nitric acid with volume
Than being 100:1 premixing is uniform, adds titanium salt, is uniformly mixed, and ageing obtains TiO2Colloidal sol, by TiO2Colloidal sol ethyl alcohol into
It is uniformly mixed with additive after row dilution, finally loads to substrate surface at room temperature, obtain that there is high efficiency photocatalysis activity
TiO2Film；Wherein, the addition of titanium salt is the 10% of deionized water volume, and the addition of additive is TiO2TiO in colloidal sol2
Quality 0.1~50%.
The mass concentration of the concentrated nitric acid is 69%；Described be uniformly mixed is realized by stirring.
The stirring carries out at being 0~25 DEG C in temperature.
The titanium salt is titanium sulfate, titanium tetraisopropylate or titanium tetrachloride.
The ageing carries out at room temperature, and digestion time is 2~4 weeks.
The addition and TiO of the ethyl alcohol2The volume ratio of colloidal sol is (5~7)：1.
The additive is one kind in Ludox, polyethylene glycol, polymer resin, silane coupling agent, organic siliconresin.
The Ludox is one or more of JN-20, JN-25, JN-30, SW-20, SW-25, SW-30；
The polyethylene glycol is PEG-200, PEG-400, PEG-600, PEG-800, PEG-1000, PEG-1500, PEG-
One or more of 2000；
The polymer resin is in epoxy resin, acrylic resin, cellulose esters, aqueous polyurethane, Pioloform, polyvinyl acetal
One or more；
The silane coupling agent is one or more of KH550, KH570, KH590, KH590；
The organic siliconresin is one kind in epoxy-modified silicones, methyl silicon resin, polyester modified organic silicon resin
Or it is several.
When the additive is Ludox, the addition of Ludox is TiO2TiO in colloidal sol2Quality 1%~30%；
When the additive is polyethylene glycol, the addition of polyethylene glycol is TiO2TiO in colloidal sol2Quality 5%~
50%；
When the additive is polymer resin, the addition of polymer resin is TiO2TiO in colloidal sol2Quality 0.1%~
10%；
When the additive is silane coupling agent, the addition of silane coupling agent is TiO2TiO in colloidal sol2Quality
0.2%~30%；
When the additive is organic siliconresin, the addition of organic siliconresin is TiO2TiO in colloidal sol2Quality
0.1%~20%.
It is described to load to what substrate surface was carried out using spray coating method.
Compared with prior art, the beneficial effects of the present invention are：
(1) present invention is by using to TiO2Additive is added in colloidal sol, due to additive and colloidal sol and base material
Between interaction so that film is significantly improved in the load capacity and adhesive force of substrate surface, improves film well
Adhesion strength between substrate and the degradation efficiency to NO.Experiment measures, and load capacity is up to 23 μ g/cm2, adhesive force also reaches
B grades of ASTM class 5s.
(2) present invention by by deionized water and concentrated nitric acid with volume ratio for 100:1 premixing is uniform, adds titanium salt,
It is uniformly mixed, ageing obtains TiO2TiO is made in colloidal sol, this method2Colloidal sol performance is stablized, it is often more important that thin film preparation process letter
Single, of low cost, film forming period is short, and is not necessarily to high-temperature process, and overcoming can not fast implement in substrate in the prior art
Film loads and load process is complicated, film and the not strong problem of substrate caking power.
(3) it can be loaded in substrate at room temperature in the present invention, form film, technique is easily achieved, overcomes existing
When using high temperature plated film in technology, it is complicated to pass through the equipment for sputtering and using so that the high problem of the manufacturing cost of film.
Further, in the present invention additive that uses for Ludox, polyethylene glycol, polymer resin, silane coupling agent, have
One kind in machine silicones interacts so that film adheres in substrate between these substances and colloidal sol and base material
It power and significantly improves.
Description of the drawings
Fig. 1 is for the embodiment of the present invention 1~5 with sample in comparative example to NO degradation rate test charts.
Fig. 2 is TiO prepared by comparative example2XRD spectrum.
Fig. 3 is the process flow chart of the present invention.
Specific implementation mode
Specific introduce is made to the present invention below in conjunction with the drawings and specific embodiments.
Embodiment 1
Referring to Fig. 3, the concentrated nitric acid (mass fraction 69%) of 1 volume is added in the deionized water of 100 volumes and is carried out in advance
Mixing, then mechanical agitation is uniform in ice-water bath, adds the titanium tetraisopropylate of 10 volumes, the continued mechanical in ice-water bath
3h is stirred, so that it is uniformly dispersed, obtains solution, above-mentioned solution is sealed, is aged 2 weeks at room temperature, obtains TiO2Colloidal sol.With
TiO2The ethyl alcohol of 5 times of volumes of sol volume is to TiO2Colloidal sol is diluted, and TiO is then added2TiO in colloidal sol2Quality
20% Ludox (JN-20) is uniformly mixed, and is used spray coating method to carry out plated film at room temperature and is loaded to substrate surface, is had
The TiO of high efficiency photocatalysis activity2Film.The adhesive force of institute's plated film is characterized using cross-hatching (ISO 2409-1992), and
The NO degradation rates of sample are tested.Characterization result is shown in Table 1 and Fig. 1.
Embodiment 2
The concentrated nitric acid (mass fraction 69%) of 1 volume is added in the deionized water of 100 volumes, is pre-mixed, so
Mechanical agitation is uniform in ice-water bath afterwards, adds the titanium tetraisopropylate of 10 volumes, is in ice-water bath that continued mechanical stirs 3h,
So that it is uniformly dispersed, obtain solution, above-mentioned solution is sealed, is aged 2 weeks at room temperature, obtains TiO2Colloidal sol.Use TiO2Sol body
The ethyl alcohol of 7 times of long-pending volumes is to TiO2Colloidal sol is diluted, and TiO is then added2TiO in colloidal sol2Quality 10% polyethylene glycol
(PEG-400), it is uniformly mixed, uses spray coating method to carry out plated film at room temperature and load to substrate surface, obtain with high efficiency photocatalysis
Active TiO2Film.The adhesive force of institute's plated film is characterized using cross-hatching (ISO 2409-1992), and to the NO of sample
Degradation rate is tested.Characterization result is shown in Table 1 and Fig. 1.
Embodiment 3
The concentrated nitric acid (mass fraction 69%) of 1 volume is added in the deionized water of 100 volumes, is pre-mixed, so
Mechanical agitation is uniform in ice-water bath afterwards, adds the titanium tetraisopropylate of 10 volumes, is in ice-water bath that continued mechanical stirs 3h,
So that it is uniformly dispersed, obtains solution.Above-mentioned solution is sealed, is aged 2 weeks at room temperature, obtains TiO2Colloidal sol.TiO2Sol volume
5 times of volumes of use ethyl alcohol to TiO2Colloidal sol is diluted, and TiO is then added2TiO in colloidal sol2Quality 0.5% polymerization tree
Fat (epoxy resin), mixing is uniform, uses spray coating method to carry out plated film at room temperature and loads to substrate surface, obtains urging with efficiency light
Change active TiO2Film.The adhesive force of institute's plated film is characterized using cross-hatching (ISO 2409-1992), and to sample
NO degradation rates are tested.Characterization result is shown in Table 1 and Fig. 1.
Embodiment 4
The concentrated nitric acid (mass fraction 69%) of 1 volume is added in the deionized water of 100 volumes and is pre-mixed, then
Mechanical agitation is uniform in ice-water bath, adds the titanium tetraisopropylate of 10 volumes, and continued mechanical stirs 3h in ice-water bath, makes
It is uniformly dispersed, and obtains solution, and above-mentioned solution is sealed, and is aged 3 weeks at room temperature, obtains TiO2Colloidal sol.Use TiO2Sol volume
5 times of volumes ethyl alcohol to TiO2Colloidal sol is diluted, and TiO is then added2TiO in colloidal sol2Quality be 10% it is silane coupled
Agent (KH570), mixing is uniform, uses spray coating method to carry out plated film at room temperature and loads to substrate surface, obtains with high efficiency photocatalysis
Active TiO2Film.The adhesive force of institute's plated film is characterized using cross-hatching (ISO 2409-1992), and to the NO of sample
Degradation rate is tested.Characterization result is shown in Table 1 and Fig. 1.
Embodiment 5
The concentrated nitric acid (mass fraction 69%) of 1 volume is added in the deionized water of 100 volumes, machinery stirs in ice-water bath
It mixes and is pre-mixed, then mechanical agitation is uniform in ice-water bath, the titanium tetraisopropylate of 10 volumes is added, in ice-water bath
Continued mechanical stirs 3h, so that it is uniformly dispersed, obtains solution, above-mentioned solution is sealed, and is aged 4 weeks at room temperature, obtains TiO2
Colloidal sol.Use TiO2The ethyl alcohol of 5 times of volumes of sol volume is to TiO2Colloidal sol is diluted, and TiO is then added2TiO in colloidal sol2's
The organic siliconresin (epoxy-modified silicones) of quality 15%, mixing carry out, and load to substrate using spray coating method plated film at room temperature
Surface obtains the TiO with high efficiency photocatalysis activity2Film.Attachment using cross-hatching (ISO 2409-1992) to institute's plated film
Power is characterized, and is tested the NO degradation rates of sample.Characterization result is shown in Table 1 and Fig. 1.
Comparative example：
The concentrated nitric acid (mass fraction 69%) of 1 volume is added in the deionized water of 100 volumes, then in ice-water bath
Mechanical agitation is uniform, adds the titanium tetraisopropylate of 10 volumes, and continued mechanical stirs 3h in ice-water bath, so that it is uniformly dispersed, obtains
To solution.Above-mentioned solution is sealed, is aged 2 weeks at room temperature, obtains TiO2Colloidal sol.Use TiO2The second of 5 times of volumes of sol volume
Alcohol is to TiO2Colloidal sol is diluted, and is used spray coating method to carry out plated film after mixing and is loaded to substrate surface, obtains having efficient
The TiO of photocatalytic activity2Film.The adhesive force of institute's plated film is characterized using cross-hatching (ISO 2409-1992), and to sample
The NO degradation rates of product are tested.Characterization result is shown in Table 1 and Fig. 1.TiO is made in this method2XRD spectra as shown in Fig. 2.
Table 1 is the load capacity test result and adhesive force characterization result of the embodiment of the present invention 1~5 and sample in comparative example
It can be seen that from table 1 and Fig. 1 and work as TiO2After different additives is added in colloidal sol, TiO in substrate2Load capacity it is equal
It increases, while improving the degradation rate of NO；Adhesive force of the film in substrate is also improved well simultaneously.From Fig. 2
As can be seen that TiO made from this method2For Detitanium-ore-type.
Embodiment 6
By deionized water and mass concentration be 69% concentrated nitric acid with volume ratio it is 100:1 premixing is uniform, adds titanium salt,
It is stirred by mixing at 25 DEG C, is aged 2 weeks at room temperature, obtains TiO2Colloidal sol, by TiO2After colloidal sol is diluted with ethyl alcohol
It is uniformly mixed with additive, substrate surface is finally loaded to using spray coating method at room temperature, obtain that there is high efficiency photocatalysis activity
TiO2Film；Wherein, the addition of titanium salt is the 10% of deionized water volume, and titanium salt is titanium sulfate；The addition and TiO of ethyl alcohol2
The volume ratio of colloidal sol is 6：1；The quality of additive is TiO2TiO in colloidal sol2Quality 1%, and additive be JN-25 silicon
The mixture of colloidal sol and SW-20 Ludox.
Embodiment 7
By deionized water and mass concentration be 69% concentrated nitric acid with volume ratio it is 100:1 premixing is uniform, adds titanium salt,
It is stirred by mixing at 20 DEG C, is aged 4 weeks at room temperature, obtains TiO2Colloidal sol, by TiO2After colloidal sol is diluted with ethyl alcohol
It is uniformly mixed with additive, substrate surface is finally loaded to using spray coating method at room temperature, obtain that there is high efficiency photocatalysis activity
TiO2Film；Wherein, the addition of titanium salt is the 10% of deionized water volume, and titanium salt is titanium tetraisopropylate；The addition of ethyl alcohol
With TiO2The volume ratio of colloidal sol is 5：1；The quality of additive is TiO2TiO in colloidal sol2Quality 30%, and additive is
The mixture of JN-30, SW-20, SW-25 and SW-30 Ludox.
Embodiment 8
By deionized water and mass concentration be 69% concentrated nitric acid with volume ratio it is 100:1 premixing is uniform, adds titanium salt,
It is stirred by mixing at 10 DEG C, is aged 2 weeks at room temperature, obtains TiO2Colloidal sol, by TiO2After colloidal sol is diluted with ethyl alcohol
It is uniformly mixed with additive, substrate surface is finally loaded to using spray coating method at room temperature, obtain that there is high efficiency photocatalysis activity
TiO2Film；Wherein, the addition of titanium salt is the 10% of deionized water volume, and titanium salt is titanium tetrachloride；The addition of ethyl alcohol with
TiO2The volume ratio of colloidal sol is 5：1；The quality of additive is TiO2TiO in colloidal sol2Quality 10%, and additive be JN-
30, with the mixture of SW-30 Ludox.
Embodiment 9
By deionized water and mass concentration be 69% concentrated nitric acid with volume ratio it is 100:1 premixing is uniform, adds titanium salt,
It stirs by mixing at 5 DEG C, is aged 2 weeks at room temperature, obtains TiO2Colloidal sol, by TiO2After colloidal sol is diluted with ethyl alcohol
It is uniformly mixed with additive, substrate surface is finally loaded to using spray coating method at room temperature, obtain that there is high efficiency photocatalysis activity
TiO2Film；Wherein, the addition of titanium salt is the 10% of deionized water volume, and titanium salt is titanium sulfate；The addition and TiO of ethyl alcohol2
The volume ratio of colloidal sol is 5：1；The quality of additive is TiO2TiO in colloidal sol2Quality 5%, and additive be PEG-400
With the mixture of PEG-600.
Embodiment 10
By deionized water and mass concentration be 69% concentrated nitric acid with volume ratio it is 100:1 premixing is uniform, adds titanium salt,
It is stirred by mixing at 10 DEG C, is aged 3 weeks at room temperature, obtains TiO2Colloidal sol, by TiO2After colloidal sol is diluted with ethyl alcohol
It is uniformly mixed with additive, substrate surface is finally loaded to using spray coating method at room temperature, obtain that there is high efficiency photocatalysis activity
TiO2Film；Wherein, the addition of titanium salt is the 10% of deionized water volume, and titanium salt is titanium tetrachloride；The addition of ethyl alcohol with
TiO2The volume ratio of colloidal sol is 6：1；The quality of additive is TiO2TiO in colloidal sol2Quality 50%, and additive is
The mixture of PEG-800 and PEG-1000.
Embodiment 11
By deionized water and mass concentration be 69% concentrated nitric acid with volume ratio it is 100:1 premixing is uniform, adds titanium salt,
It is stirred by mixing at 15 DEG C, is aged 4 weeks at room temperature, obtains TiO2Colloidal sol, by TiO2After colloidal sol is diluted with ethyl alcohol
It is uniformly mixed with additive, substrate surface is finally loaded to using spray coating method at room temperature, obtain that there is high efficiency photocatalysis activity
TiO2Film；Wherein, the addition of titanium salt is the 10% of deionized water volume, and titanium salt is titanium tetrachloride；The addition of ethyl alcohol with
TiO2The volume ratio of colloidal sol is 7：1；The quality of additive is TiO2TiO in colloidal sol2Quality 30%, and additive is
The mixture of PEG-1000, PEG-1500 and PEG-2000.
Embodiment 12
By deionized water and mass concentration be 69% concentrated nitric acid with volume ratio it is 100:1 premixing is uniform, adds titanium salt,
It is stirred by mixing at 25 DEG C, is aged 2 weeks at room temperature, obtains TiO2Colloidal sol, by TiO2After colloidal sol is diluted with ethyl alcohol
It is uniformly mixed with additive, substrate surface is finally loaded to using spray coating method at room temperature, obtain that there is high efficiency photocatalysis activity
TiO2Film；Wherein, the addition of titanium salt is the 10% of deionized water volume, and titanium salt is titanium sulfate；The addition and TiO of ethyl alcohol2
The volume ratio of colloidal sol is 5：1；The quality of additive is TiO2TiO in colloidal sol2Quality 0.1%, and additive be acrylic acid
The mixture of resin and cellulose esters.
Embodiment 13
By deionized water and mass concentration be 69% concentrated nitric acid with volume ratio it is 100:1 premixing is uniform, adds titanium salt,
It is stirred by mixing at 10 DEG C, is aged 3 weeks at room temperature, obtains TiO2Colloidal sol, by TiO2After colloidal sol is diluted with ethyl alcohol
It is uniformly mixed with additive, substrate surface is finally loaded to using spray coating method at room temperature, obtain that there is high efficiency photocatalysis activity
TiO2Film；Wherein, the addition of titanium salt is the 10% of deionized water volume, and titanium salt is titanium sulfate；The addition and TiO of ethyl alcohol2
The volume ratio of colloidal sol is 7：1；The quality of additive is TiO2TiO in colloidal sol2Quality 5%, and additive be aqueous poly- ammonia
The mixture of ester and Pioloform, polyvinyl acetal.
Embodiment 14
By deionized water and mass concentration be 69% concentrated nitric acid with volume ratio it is 100:1 premixing is uniform, adds titanium salt,
It stirs by mixing at 5 DEG C, is aged 3 weeks at room temperature, obtains TiO2Colloidal sol, by TiO2After colloidal sol is diluted with ethyl alcohol
It is uniformly mixed with additive, substrate surface is finally loaded to using spray coating method at room temperature, obtain that there is high efficiency photocatalysis activity
TiO2Film；Wherein, the addition of titanium salt is the 10% of deionized water volume, and titanium salt is titanium tetrachloride；The addition of ethyl alcohol with
TiO2The volume ratio of colloidal sol is 6：1；The quality of additive is TiO2TiO in colloidal sol2Quality 10%, and additive be water
Property polyurethane.
Embodiment 15
By deionized water and mass concentration be 69% concentrated nitric acid with volume ratio it is 100:1 premixing is uniform, adds titanium salt,
It stirs by mixing at 5 DEG C, is aged 2 weeks at room temperature, obtains TiO2Colloidal sol, by TiO2After colloidal sol is diluted with ethyl alcohol
It is uniformly mixed with additive, substrate surface is finally loaded to using spray coating method at room temperature, obtain that there is high efficiency photocatalysis activity
TiO2Film；Wherein, the addition of titanium salt is the 10% of deionized water volume, and titanium salt is titanium tetrachloride；The addition of ethyl alcohol with
TiO2The volume ratio of colloidal sol is 5：1；The quality of additive is TiO2TiO in colloidal sol2Quality 0.2%, and additive is
The mixture of KH570 and KH590.
Embodiment 16
By deionized water and mass concentration be 69% concentrated nitric acid with volume ratio it is 100:1 premixing is uniform, adds titanium salt,
It is stirred by mixing at 0 DEG C, is aged 3 weeks at room temperature, obtains TiO2Colloidal sol, by TiO2After colloidal sol is diluted with ethyl alcohol
It is uniformly mixed with additive, substrate surface is finally loaded to using spray coating method at room temperature, obtain that there is high efficiency photocatalysis activity
TiO2Film；Wherein, the addition of titanium salt is the 10% of deionized water volume, and titanium salt is titanium tetraisopropylate；The addition of ethyl alcohol
With TiO2The volume ratio of colloidal sol is 6：1；The quality of additive is TiO2TiO in colloidal sol2Quality 20%, and additive is
KH590。
Embodiment 17
By deionized water and mass concentration be 69% concentrated nitric acid with volume ratio it is 100:1 premixing is uniform, adds titanium salt,
It is stirred by mixing at 15 DEG C, is aged 4 weeks at room temperature, obtains TiO2Colloidal sol, by TiO2After colloidal sol is diluted with ethyl alcohol
It is uniformly mixed with additive, substrate surface is finally loaded to using spray coating method at room temperature, obtain that there is high efficiency photocatalysis activity
TiO2Film；Wherein, the addition of titanium salt is the 10% of deionized water volume, and titanium salt is titanium tetrachloride；The addition of ethyl alcohol with
TiO2The volume ratio of colloidal sol is 7：1；The quality of additive is TiO2TiO in colloidal sol2Quality 30%, and additive is
The mixture of KH550 and KH590.
Embodiment 18
By deionized water and mass concentration be 69% concentrated nitric acid with volume ratio it is 100:1 premixing is uniform, adds titanium salt,
It stirs by mixing at 5 DEG C, is aged 2 weeks at room temperature, obtains TiO2Colloidal sol, by TiO2After colloidal sol is diluted with ethyl alcohol
It is uniformly mixed with additive, substrate surface is finally loaded to using spray coating method at room temperature, obtain that there is high efficiency photocatalysis activity
TiO2Film；Wherein, the addition of titanium salt is the 10% of deionized water volume, and titanium salt is titanium tetrachloride；The addition of ethyl alcohol with
TiO2The volume ratio of colloidal sol is 5：1；The quality of additive is TiO2TiO in colloidal sol2Quality 0.1%, and additive be first
Base silicones.
Embodiment 19
By deionized water and mass concentration be 69% concentrated nitric acid with volume ratio it is 100:1 premixing is uniform, adds titanium salt,
It is stirred by mixing at 0 DEG C, is aged 3 weeks at room temperature, obtains TiO2Colloidal sol, by TiO2After colloidal sol is diluted with ethyl alcohol
It is uniformly mixed with additive, substrate surface is finally loaded to using spray coating method at room temperature, obtain that there is high efficiency photocatalysis activity
TiO2Film；Wherein, the addition of titanium salt is the 10% of deionized water volume, and titanium salt is titanium tetrachloride；The addition of ethyl alcohol with
TiO2The volume ratio of colloidal sol is 6：1；The quality of additive is TiO2TiO in colloidal sol2Quality 10%, and additive is poly-
Ester modified organic siliconresin.
Embodiment 20
By deionized water and mass concentration be 69% concentrated nitric acid with volume ratio it is 100:1 premixing is uniform, adds titanium salt,
It is stirred by mixing at 15 DEG C, is aged 4 weeks at room temperature, obtains TiO2Colloidal sol, by TiO2After colloidal sol is diluted with ethyl alcohol
It is uniformly mixed with additive, substrate surface is finally loaded to using spray coating method at room temperature, obtain that there is high efficiency photocatalysis activity
TiO2Film；Wherein, the addition of titanium salt is the 10% of deionized water volume, and titanium salt is titanium tetraisopropylate；The addition of ethyl alcohol
With TiO2The volume ratio of colloidal sol is 7：1；The quality of additive is TiO2TiO in colloidal sol2Quality 20%, and additive is
Epoxy-modified silicones.
A kind of TiO with high efficiency photocatalysis activity2Thin film low temperature preparation method, including TiO2The low temperature preparation of colloidal sol, with
And the low temperature plated film in substrate, concrete operations are as follows：Concentrated nitric acid is added in deionized water, titanium salt is added under low temperature stirring,
Make to be uniformly dispersed.Sealing ageing, for use；By TiO2Colloidal sol is uniformly mixed with additive, is loaded to substrate surface, and light is made
Catalytic film, and by NO removal rates, adhesive force etc. shows that film made from this method is with good performance.Add in the present invention
Add the addition of agent to significantly improve the performance of film, realizes and carry out low temperature load, while the operation of the present invention in substrate surface
Simple and practicable, film forming period is short, and catalytic effect is good, and early period and later stage are all not necessarily to high-temperature process, and base is provided for practical application
Plinth.
Claims (8)
1. a kind of TiO with high efficiency photocatalysis activity2Thin film low temperature preparation method, which is characterized in that by deionized water and dense nitre
Acid is with volume ratio for 100:1 premixing is uniform, adds titanium salt, is uniformly mixed, and ageing obtains TiO2Colloidal sol, by TiO2Colloidal sol is used
Ethyl alcohol is uniformly mixed after being diluted with additive, is finally loaded to substrate surface at room temperature, is obtained with high efficiency photocatalysis work
The TiO of property2Film；Wherein, the addition of titanium salt is the 10% of deionized water volume, and the addition of additive is TiO2In colloidal sol
TiO2Quality 0.1~50%；
The addition and TiO of the ethyl alcohol2The volume ratio of colloidal sol is (5~7)：1；
The additive is one kind in Ludox, polyethylene glycol, polymer resin, silane coupling agent, organic siliconresin.
2. a kind of TiO with high efficiency photocatalysis activity according to claim 12Thin film low temperature preparation method, feature exist
In the mass concentration of the concentrated nitric acid is 69%；Described be uniformly mixed is realized by stirring.
3. a kind of TiO with high efficiency photocatalysis activity according to claim 22Thin film low temperature preparation method, feature exist
In the stirring carries out at being 0~25 DEG C in temperature.
4. a kind of TiO with high efficiency photocatalysis activity according to claim 12Thin film low temperature preparation method, feature exist
In the titanium salt is titanium sulfate, titanium tetraisopropylate or titanium tetrachloride.
5. a kind of TiO with high efficiency photocatalysis activity according to claim 12Thin film low temperature preparation method, feature exist
In the ageing carries out at room temperature, and digestion time is 2~4 weeks.
6. a kind of TiO with high efficiency photocatalysis activity according to claim 12Thin film low temperature preparation method, feature exist
In the Ludox is one or more of JN-20, JN-25, JN-30, SW-20, SW-25, SW-30；
The polyethylene glycol is PEG-200, PEG-400, PEG-600, PEG-800, PEG-1000, PEG-1500, PEG-2000
One or more of；
The polymer resin is one in epoxy resin, acrylic resin, cellulose esters, aqueous polyurethane, Pioloform, polyvinyl acetal
Kind is several；
The silane coupling agent is one or more of KH550, KH570, KH590；
The organic siliconresin is epoxy-modified silicones, methyl silicon resin, one kind in polyester modified organic silicon resin or several
Kind.
7. a kind of TiO with high efficiency photocatalysis activity according to claim 12Thin film low temperature preparation method, feature exist
In,
When the additive is Ludox, the addition of Ludox is TiO2TiO in colloidal sol2Quality 1%~30%；
When the additive is polyethylene glycol, the addition of polyethylene glycol is TiO2TiO in colloidal sol2Quality 5%~50%；
When the additive is polymer resin, the addition of polymer resin is TiO2TiO in colloidal sol2Quality 0.1%~
10%；
When the additive is silane coupling agent, the addition of silane coupling agent is TiO2TiO in colloidal sol2Quality 0.2%~
30%；
When the additive is organic siliconresin, the addition of organic siliconresin is TiO2TiO in colloidal sol2Quality 0.1%~
20%.
8. a kind of TiO with high efficiency photocatalysis activity according to claim 12Thin film low temperature preparation method, feature exist
In described to load to what substrate surface was carried out using spray coating method.
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| CN101205121A (en) * | 2007-12-18 | 2008-06-25 | 中国科学院上海硅酸盐研究所 | Transparent titania super-hydrophilic coating using organosilicon as underlayment and preparation thereof |
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| WO2013017651A1 (en) * | 2011-08-04 | 2013-02-07 | Delta Srl | Self -cleaning composite material, in particular a composite material for production of molded items for kitchen and bathroom interior decoration |
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| CN102343259A (en) * | 2011-04-13 | 2012-02-08 | 浙江大学 | Method for preparing titanium dioxide nanofilm at low temperature |
| WO2013017651A1 (en) * | 2011-08-04 | 2013-02-07 | Delta Srl | Self -cleaning composite material, in particular a composite material for production of molded items for kitchen and bathroom interior decoration |
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