CN105870330A - Nano titanium dioxide sol for perovskite solar cell and preparation method of skeleton membrane - Google Patents

Nano titanium dioxide sol for perovskite solar cell and preparation method of skeleton membrane Download PDF

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CN105870330A
CN105870330A CN201610228505.2A CN201610228505A CN105870330A CN 105870330 A CN105870330 A CN 105870330A CN 201610228505 A CN201610228505 A CN 201610228505A CN 105870330 A CN105870330 A CN 105870330A
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tio
colloidal sol
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CN105870330B (en
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李建生
刘炳光
卢俊锋
胡兴兰
白净伊
董崇文
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Hefei Jiuzhou Longteng Scientific And Technological Achievement Transformation Co ltd
Jiangsu Hongxunhe New Energy Co ltd
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Tianjin Vocational Institute
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Abstract

The invention relates to nano titanium dioxide sol for a perovskite solar cell and a preparation method of a skeleton membrane. Large-particle size nano SiO2 sol and a small amount of small-particle size organic silicon nano resin sol are added to small-particle size nano TiO2 sol; small-particle size nano TiO2 and large-particle size nano SiO2 are subjected to copolymerization reaction and coat the surfaces of large-particle size nano SiO2 particles to form core-shell structure nano TiO2 particles; and a small amount of small-particle size organic silicon nano resin further partially coats the core-shell structure nano TiO2 particles, so that the small-particle size organic silicon nano resin is firmly bonded to the surface of a substrate material and is combined to form the core-shell structure nano TiO2 skeleton membrane. By core-shell structure nano TiO2 particles, the contradiction between the adhesive force and the pore capacity of the nano TiO2 skeleton membrane is avoided; a flexible molecular group is introduced into the skeleton membrane; and high adhesive force of a membrane layer is further enhanced, so that the high-temperature sintering process of the nano TiO2 skeleton membrane is omitted.

Description

A kind of perovskite solar cell nanometer TiO 2 sol and the preparation method of framework film
Technical field
The present invention relates to a kind of perovskite solar cell nanometer TiO 2 sol and the preparation method of framework film, particularly The preparation method of a kind of non-sintered nuclear shell structure nano titanium dioxide framework film, belongs to new forms of energy and field of new.
Technical background
The solar cell prepared based on organic metal halide perovskite structure light absorbing material is referred to as perovskite too Positive electricity pond, its photoelectric transformation efficiency is more than 20% at present, is expected future to reach 50%.Perovskite solar cell only need to be by calcium titanium Ore deposit light absorbing material is supported on nano bone frame material just can be made perovskite light absorbing zone and realize opto-electronic conversion, the most easily Large-scale production, and expect that manufacturing cost is the lowest, it is desirable to technological break-through can bring new hope to solar energy industry, makes in the future Colorful film battery decoration is arranged on building surface and promotes integrated photovoltaic architectural development.
Perovskite solar cell be typically by transparent conducting glass, compacted zone, perovskite light absorbing zone, hole transmission layer, Metal back electrode five part forms, and wherein, perovskite light absorbing zone is its most critical part, by perovskite light absorbing material and work Porous nanometer material film for skeleton is constituted.Conventional skeleton nano material includes nano-TiO2、Al2O3、ZrO2、SiO2、ZnO、 SnO2、WO3、ReO、BaSnO3、SrTiO3Deng, wherein, it is most commonly used that nano-TiO2.The composition of skeleton nano material, pattern are tied Structure and preparation technology are the biggest to perovskite light absorbing zone performance impact.Skeleton nano material is except as perovskite light absorbing material Outside support skeleton, it is also possible to transmission electronics, improve light absorbing material crystalline texture and increase perovskite light absorbing material surface area, Thus promote the photoelectric transformation efficiency of perovskite light absorbing zone.
Nano-TiO2Particle has anatase titanium dioxide, plate titanium-type and three kinds of crystal formations of rutile-type, has spherical, needle-like and sheet etc. multiple Particle shape, the particle size range that 2-100nm is broad, select commercially available or homemade nano-TiO according to purposes2Particle, adds dispersion Agent, stabilizer and other additive are dispersed in solvent, make the high dispersive of the easily various models of coating of 3%-40% Nano-TiO2Slurry or colloid.The most existing a small amount of commercialization high-dispersion nano TiO2Slurry is supplied, wherein, and Australia The high-dispersion nano TiO of Dyesol company2Size Technology level is high, is now in evaluation phase on probation.
Nano-TiO2Slurry or colloid can use method of spin coating, scraper plate method, rolling method or spraying process after adjusting viscosity Being coated on matrix material, form perforated membrane at matrix surface after solvent volatile dry, film layer pore volume degree is mainly by slurry or glue The composition of body determines, thicknesses of layers can pass through nano-TiO2Slurry or the viscosity of colloid and coating speed adjust, it is desirable to nanometer Framework film can be securely attached on matrix surface.
Nano-TiO2Framework film preparation method mainly has high-temperature sintering process and sol-gel process.High-temperature sintering process is first will Nano-TiO2Slurry or colloid are coated on matrix, work as nano-TiO2When particle diameter is relatively big or film layer is thicker, during drying and forming-film often Peeling and film layer obscission occur, needs to process under 500 DEG C of high temperature to make it be sintered to fix on matrix.High-temperature sintering process adds Work cost is high, can not use, limit its range of application on flexible high molecular material substrate.Sol-gel process is to receive Rice TiO2Colloid is coated on matrix, nano-TiO2Molecular separating force or adhesive is relied on to be securely attached on matrix surface, can be Film-forming under lower temperature, advantage is to select matrix material relatively flexibly, easily to realize industrialization.
The Institute of Technology of Lausanne, SUI federation patent of invention US2015200377(2015-07-16) disclose one and prepare and receive Rice TiO2The method of framework film, first hybrid reaction 24h at 180 DEG C by four butanol titaniums and hydrofluoric acid, by gained white after cooling Precipitation and centrifugal separation, then with ethanol and deionized water wash, the dried length of side for preparing is 30nm, thickness is the flake nano of 7nm TiO2Particle, is spin-coated on after being disperseed on the compacted zone of electro-conductive glass, thickness about 500nm, makes annealing treatment 0.5 h at 500 DEG C, TiCl is used at 70 DEG C4The aqueous solution processes 0.5 h, after washing by ethanol and deionized water, then 500 DEG C of annealings 0.5 h, obtains there is nano-TiO2The backing material of casing play.
Korea Research Inst. of Chemical Technology's patent of invention US2016005547(2016-01-07) disclose one and prepare nanometer TiO2The method of framework film, thermally decomposes to yield the nano-TiO of average grain diameter 50nm by titanium peroxide complex2Particle, by its with Terpinol mixing dispersion obtains nano-TiO2Lotion, is screen printed onto on the compacted zone of electro-conductive glass, and thickness about 600nm, 500 DEG C annealing 0.5 h, at 60 DEG C, used TiCl4The aqueous solution processes to improve nano-TiO2Casing play surface area, then 500 DEG C of annealing 0.5 h, obtain there is nano-TiO2The backing material of casing play, nano-TiO2Casing play surface area is 40m2/ g。
Japan Ricoh company patent of invention US 2015279573 (2015-10-01) is open prepares nano-TiO2Film uses Method, use Dyesol company make 18NR-T type nano-TiO2Slurry, is spin-coated on the compacted zone of electro-conductive glass, Thickness about 300nm, heated-air drying at 150 DEG C, then make annealing treatment 0.5 h at 500 DEG C, obtain there is nano-TiO2The substrate of casing play Material.
Patent of invention CN104909404(2015-09-16 of Tianjin Professional College) disclose a kind of sol-gel process Preparation stability nano-TiO2Colloid method, is directly prepared for the dichloride in anatase type TiO that light transmission is good2Particle, eliminates the reliance on height Temperature processing procedure realizes nano-TiO2Turning crystalline substance, test is as the applicability of perovskite light absorbing zone skeleton nano material at present.
Existing perovskite solar cell nanometer titanium dioxide casing play needs through 500 DEG C of high temperature above sintering processes, system Standby complex process and cost are high, it is impossible to apply on macromolecule transparent material, limit macromolecule membrane perovskite solar cell Development.
Summary of the invention
It is an object of the present invention to provide a kind of perovskite solar cell nanometer TiO2Colloidal sol, uses nuclear shell structure nano TiO2Grain Son, solves nano-TiO2Contradiction between framework film adhesive force and pore volume degree, and in framework film, introduce flexible molecule group, Further enhancing film adhesion strong, thus eliminate nano-TiO2The high-temperature sintering process of framework film, inhales perovskite light Receipts material compatibility is good, can be as perovskite solar cell light absorption layer framework material.
The principle of the present invention is the nano-TiO in small particle2Colloidal sol adds the Nano-meter SiO_2 of big particle diameter2Colloidal sol is with a small amount of The organic silicon nano resin sol of small particle, the nano-TiO of small particle2Nano-meter SiO_2 with big particle diameter2It is copolymerized, and wraps It is rolled in big grain diameter nano SiO2Particle surface forms nuclear shell structure nano TiO2Particle, the organic silicon nano resin of a small amount of small particle Further portion envelops nuclear shell structure nano TiO2Particle so that it is adhere to substrate material surface and the shape that be combined with each other securely Become nano-TiO2Framework film.Organic silicon nano resin of the present invention is a kind of self-curing adhesive containing active function groups, 150 Substrate material surface can be sticked to rapid curing below DEG C.The nanoparticle surface that particle diameter is little is long-pending big, on backing material Adhesive force is extremely strong, need not sinter and just can be strongly adhered on substrate surface, but the nano particle framework film pore volume that particle diameter is little Spending the least, core-shell structure nanometer particle can solve the contradiction between nano particle adhesive force and pore volume degree.Nuclear shell structure nano TiO2The pore volume degree of framework film and surface area can pass through nano-TiO2, Nano-meter SiO_22Pattern and grain with organic silicon nano particle Footpath controls.
Perovskite solar cell nanometer TiO of the present invention2Colloidal sol is the nano-TiO of 5nm by average grain diameter2Colloidal sol, average grain diameter Nano-meter SiO_2 for 40nm2Colloidal sol, average grain diameter are the organic silicon nano resin sol of 10nm and solvent composition, in colloidal sol each group Mass percent shared by point is as follows:
Average grain diameter is the nano-TiO of 5nm2 1.5%-5%
Average grain diameter is the Nano-meter SiO_2 of 40nm2 0.9%-3%
Average grain diameter is the organic silicon nano resin 0.6%-2% of 10nm
Balance of solvent.
Average grain diameter is the nano-TiO of 5nm2Colloidal sol, is hydrolyzed with acetic acid catalysis by butyl titanate in ethanol water Obtain with polymerization, for preventing nano-TiO2Particle coacervation and precipitation, add acetylacetone,2,4-pentanedione as complexing agent and stabilizer.Its conduct Shell particles can be wrapped in big grain diameter nano SiO2On particle, form nuclear shell structure nano TiO2Particle.
Average grain diameter is the Nano-meter SiO_2 of 40nm2Colloidal sol, is hydrolyzed with ammonia-catalyzed by tetraethyl orthosilicate in ethanol water Obtain with polymerization, as nuclear shell structure nano TiO2The nuclear particle of particle.
Average grain diameter is that the organic silicon nano resin sol of 10nm is by organo-silicon coupling agent KH550, organo-silicon coupling agent KH560, organo-silicon coupling agent KH570 or its mixture, in ethanol water, obtain with acetic acid catalysis hydrolysis and polymerization.It is made The nano-TiO of core shell structure further it is partially retained in for adhesive2On particle, further enhancing adhesive force strong.
Solvent is C2-C6 alcohol, C3-C6 ether and the aqueous solution of acetylacetone,2,4-pentanedione, can be controlled by solvent volatility and concentration Film forming speed and the stability of colloidal sol.Mass percentage concentration is that the nuclear shell structure nano TiO 2 sol of 3%-10% can be quick Dry, shelf stable for periods 3-12 month.
Raw material butyl titanate, tetraethyl orthosilicate, organo-silicon coupling agent KH550, organo-silicon coupling agent KH560, organosilicon Coupling agent KH570, acetic acid, ammoniacal liquor, solvent C 2-C6 alcohol, C3-C6 ether and acetylacetone,2,4-pentanedione are commercially available chemical reagent.
It is a further object of the present invention to provide the preparation method of a kind of perovskite solar cell nanometer titanium dioxide framework film, The technical scheme taked includes small particle nano-TiO2Prepared by colloidal sol, big grain diameter nano SiO2Prepared by colloidal sol, organic silicon nano resin Prepared by solution, nuclear shell structure nano TiO2Prepared by colloidal sol, nuclear shell structure nano TiO2Colloidal sol film, nuclear shell structure nano TiO2Bone The solidification of frame film and evaluation, being embodied as step is:
(1) in glass reactor, it is separately added into the acetic acid that absolute ethyl alcohol, deionized water and mass percentage concentration are 30%, makes molten Liquid pH is 2-3；The mass mixings such as butyl titanate and acetylacetone,2,4-pentanedione is uniform, it is added drop-wise in glass reactor solution, constantly Making butyl titanate be hydrolyzed at 5-10 DEG C under stirring and polymerisation 1-2h, controlling material molar ratio is: metatitanic acid four fourth Ester: acetylacetone,2,4-pentanedione: deionized water: acetic acid: ethanol=1:0.3:4-40:0.2-1:20-50, reaction generates mass percentage concentration Faint yellow nano-TiO for 3%-5%2Colloidal sol, recording nano particle average grain diameter in colloidal sol is 5nm；
(2) being separately added into absolute ethyl alcohol, deionized water and ammoniacal liquor in glass reactor, making pH value of solution is 10-11；By positive silicic acid Ethyl ester adds in glass reactor solution, controls material molar ratio and is: tetraethyl orthosilicate: deionized water: ammoniacal liquor: ethanol=1: 4-40:0.2-1:20-50, it is hydrolyzed at 10-30 DEG C and polymerisation 24-72 h, obtains Nano-meter SiO_22Alkaline sol, Heating reflux reaction 0.5-2 h deamination, and make Nano-meter SiO_22Particle crystallization is grown up, and is then the second of 30% by mass percentage concentration Acid regulation colloidal sol pH is 2-3, obtains the Nano-meter SiO_2 that mass percentage concentration is 5%-10%2Acidic sol, records nanoparticle in colloidal sol Sub-average grain diameter is 40nm；
(3) in glass reactor, it is separately added into the acetic acid that absolute ethyl alcohol, deionized water and mass percentage concentration are 30%, makes molten Liquid pH is 2-3；Organo-silicon coupling agent KH550, organo-silicon coupling agent KH560 or organo-silicon coupling agent KH570 are added glass anti- Answering in device solution so that it is be at room temperature hydrolyzed and polymerisation 24-72 h, controlling material molar ratio is: organosilicon coupling Agent: deionized water: acetic acid: ethanol=1:3-30:0.2-1:20-50, it is having of 5%-10% that reaction generates mass percentage concentration Machine silicon nano-resin colloidal sol, recording nano particle average grain diameter in colloidal sol is 10nm；
(4) in glass reactor, the Nano-meter SiO_2 that mass percentage concentration is 5%-10% it is initially charged2Acidic sol and solvent, then drip Add the nano-TiO of 3%-5%2Colloidal sol, stirring reaction 4-8 h at 40-50 DEG C so that it is copolymerization forms nuclear shell structure nano TiO2Molten Glue, is cooled to room temperature, adds the organic silicon nano resin sol of 5%-10%, continues stirring reaction 8-12 h, obtains quality hundred Point concentration is the organic silicon nano TiO 2 sol of 3%-10%；
(5) with needle tubing by organic silicon nano TiO2Colloidal sol drops in the 100mm 100mm fluorine-doped tin dioxide conduction of compacted zone In glass substrate, with the coating of bar spreader uniformly, controlling wet-film thickness 3000-5000 nm, caudacoria thickness is dried in solvent volatilization Degree is for 200-600nm, then by 110-150 DEG C of heated-air drying 30 minutes, makes colloidal sol be fully cured, the uniform nanometer in formation surface TiO2Framework film；
(6) nano-TiO is recorded2Framework film surface area is 40-60m2/ g, to substrate material surface adhesive force one-level, it is seen that light is saturating Cross rate 70%-85%, tested by damp heat test.
Beneficial effects of the present invention is embodied in:
(1) nano-TiO of the present invention2The group Han flexible molecule in framework film, film adhesion is strong, can remove nano-TiO from2High temperature Sintering process；
(2) nano-TiO of the present invention2Framework film is core shell structure, solves the contradiction between the adhesive force of framework film and pore volume degree；
(3) nano-TiO of the present invention2Organic silicon nano resin portion parcel nano-TiO in framework film2Surface, reduces its light and urges Change ability, is applied in perovskite solar cell to improve its chemical stability；
(4) nano-TiO of the present invention2Framework film surface has certain hydrophobicity, is difficult to adsorb the moisture in air, is applied to calcium Titanium ore solar cell can improve its moisture-resistance.
Detailed description of the invention
Embodiment 1
Being separately added into absolute ethyl alcohol 10.4g, deionized water 4g and mass percentage concentration in 100mL glass reactor is 30% Acetic acid 4g (20mmol), making pH value of solution is 2-3；By butyl titanate 6.8g (20mmol) and acetylacetone,2,4-pentanedione solvent 6.8g (68mmol) mix, be added drop-wise in glass reactor solution, make butyl titanate enter at 5-10 DEG C under being stirred continuously Row hydrolysis and polymerisation 1-2h, reaction generates the faint yellow nano-TiO that mass percentage concentration is 5%2Colloidal sol 32g, records colloidal sol Middle nano particle average grain diameter is 5nm.
Being separately added into absolute ethyl alcohol 20g, deionized water 4g and percentage concentration in 100mL glass reactor is 25% ammoniacal liquor 0.4g (6mmol), making pH value of solution is 10-11；Tetraethyl orthosilicate 5.3g (20mmol) is added in glass reactor solution, It is hydrolyzed at 10-30 DEG C and polymerisation 24-72 h, obtains Nano-meter SiO_22Alkaline sol, heating reflux reaction 0.5-2 h Deamination and make Nano-meter SiO_22Particle crystallization is grown up, and then regulating colloidal sol pH with the acetic acid that mass percentage concentration is 30% is 2-3, It is the Nano-meter SiO_2 of 5% to mass percentage concentration2Acidic sol 24g, recording nano particle average grain diameter in colloidal sol is 40nm.
Being separately added into absolute ethyl alcohol 17.6g, deionized water 2g and mass percentage concentration in 100mL glass reactor is The acetic acid 2g (10mmol) of 30%, making pH value of solution is 2-3；Organo-silicon coupling agent KH560 2.4g (10mmol) is added drop-wise to glass In reactor solution so that it is be at room temperature hydrolyzed and polymerisation 24-72 h, it is 10% that reaction generates mass percentage concentration Organic silicon nano resin sol 24g, recording nano particle average grain diameter in colloidal sol is 10nm.
In 100mL glass reactor, it is initially charged absolute ethyl alcohol 46g, is subsequently adding the nanometer that mass percentage concentration is 5% SiO2Acidic sol 18g, adds the faint yellow nano-TiO that mass percentage concentration is 5%2Colloidal sol 30g, stirs at 40-50 DEG C Reaction 4-8 h so that it is copolymerization forms nuclear shell structure nano TiO2Colloidal sol, is cooled to room temperature, adds the organic silicon nano tree of 10% Liposoluble glue 6g, continues stirring reaction 8-12 h, obtains nano-TiO2Mass percentage concentration is 1.5%, Nano-meter SiO_22Percent mass is dense Colloidal sol 100 g that degree is 0.9% and organic silicon nano resin quality percentage concentration is 0.6%.
With needle tubing by the organic silicon nano TiO of preparation2Colloidal sol drops in the 100mm 100mm fluorine doped titanium dioxide of compacted zone In tin Conducting Glass, with the coating of bar spreader uniformly, wet-film thickness 3000-5000 nm is controlled, after solvent volatilization is dried Thicknesses of layers is 200-600nm, then by 110-150 DEG C of heated-air drying 30 minutes, makes colloidal sol be fully cured, and forms surface uniform Nano titanium oxide framework film.The nano-TiO of preparation2Framework film surface area is 40-60m2/ g, in the attachment of substrate material surface Power one-level, it is seen that light transmission rate 70%-85%, has passed through damp and hot test, the nano titanium oxide framework film prepared with high temperature sintering Performance is suitable, meets perovskite solar cell light-absorption layer and prepares requirement.
Embodiment 2
By PbI2Reagent 46.1g(100mmol) and CH3NH3I reagent 15.9g(100mmol) add 200g dimethylformamide molten In agent, under 60-70 DEG C at stir 12 h, obtain CH3NH3PbI3Light absorbing zone coating fluid.With needle tubing by light absorbing zone coating fluid Drop in the nano-TiO of embodiment 1 preparation2On framework film, with the coating of stainless steel wire rod coating device uniformly, it is placed on vacuum glove box In make solvent volatilization dry, light absorbing zone thickness reaches 500-600nm, and finally by 90-110 DEG C of heated-air drying 30 minutes, light is inhaled Receiving layer sheet resistance to reduce rapidly, color is become black by rufous rapidly, forms surface and smooths and cover uniform black calcium Titanium ore light absorbing zone.

Claims (6)

1. perovskite solar cell nanometer TiO2Colloidal sol, is characterized by use nuclear shell structure nano TiO2Particle, solves shape The nano-TiO become2Contradiction between framework film adhesive force and pore volume degree, and in the framework film formed, introduce flexible molecule base Group, further enhancing the adhesive force of shape film forming layer, thus eliminates the nano-TiO of formation2The high-temperature sintering process of framework film, Colloidal sol can be formed as perovskite solar cell light absorption layer framework film, average grain diameter be the nano-TiO of 5nm2Colloidal sol, average Particle diameter is the Nano-meter SiO_2 of 40nm2Colloidal sol, average grain diameter are organic silicon nano resin sol and solvent composition, each component of 10nm Shared mass percent is as follows:
Average grain diameter is the nano-TiO of 5nm2 1.5%-5%
Average grain diameter is the Nano-meter SiO_2 of 40nm2 0.9%-3%
Average grain diameter is the organic silicon nano resin 0.6%-2% of 10nm
Balance of solvent.
2. perovskite solar cell nanometer TiO as claimed in claim 12Colloidal sol, is characterized by that in colloidal sol, average grain diameter is 5nm's Nano-TiO2Colloidal sol is obtained with acetic acid catalysis hydrolysis and polymerization in ethanol water by butyl titanate, wraps up as shell particles At big grain diameter nano SiO2On particle, form nuclear shell structure nano TiO2Particle.
3. perovskite solar cell nanometer TiO as claimed in claim 12Colloidal sol, is characterized by that in colloidal sol, average grain diameter is 40nm's Nano-meter SiO_22Colloidal sol is obtained with ammonia-catalyzed hydrolysis and polymerization in ethanol water by tetraethyl orthosilicate, receives as core shell structure Rice TiO2The nuclear particle of particle.
4. perovskite solar cell nanometer TiO as claimed in claim 12Colloidal sol, is characterized by that in colloidal sol, average grain diameter is 10nm's Organic silicon nano resin sol by organo-silicon coupling agent KH550, organo-silicon coupling agent KH560, organo-silicon coupling agent KH570 in second Obtaining with acetic acid catalysis hydrolysis and polymerization in alcohol solution, it is further partially retained in the nano-TiO of core shell structure2Particle On, further enhancing the adhesive force of framework film.
5. perovskite solar cell nanometer TiO as claimed in claim 12Colloidal sol, it is characterized by colloidal sol solvent be C2-C6 alcohol, C3-C6 ether and the aqueous solution of acetylacetone,2,4-pentanedione.
6. a preparation method for perovskite solar cell nanometer titanium dioxide framework film, is characterized by the technical scheme bag taked Include small particle nano-TiO2Prepared by colloidal sol, big grain diameter nano SiO2Prepared by colloidal sol, prepared by organic silicon nano resin solution, nucleocapsid knot Structure nano-TiO2Prepared by colloidal sol, nuclear shell structure nano TiO2Colloidal sol film, nuclear shell structure nano TiO2Framework film solidification and evaluation, Being embodied as step is:
(1) in glass reactor, it is separately added into the acetic acid that absolute ethyl alcohol, deionized water and mass percentage concentration are 30%, makes molten Liquid pH is 2-3；The mass mixings such as butyl titanate and acetylacetone,2,4-pentanedione is uniform, it is added drop-wise in glass reactor solution, constantly Making butyl titanate be hydrolyzed at 5-10 DEG C under stirring and polymerisation 1-2h, controlling material molar ratio is: metatitanic acid four fourth Ester: acetylacetone,2,4-pentanedione: deionized water: acetic acid: ethanol=1:0.3:4-40:0.2-1:20-50, reaction generates mass percentage concentration Faint yellow nano-TiO for 3%-5%2Colloidal sol, recording nano particle average grain diameter in colloidal sol is 5nm；
(2) being separately added into absolute ethyl alcohol, deionized water and ammoniacal liquor in glass reactor, making pH value of solution is 10-11；By positive silicic acid Ethyl ester adds in glass reactor solution, controls material molar ratio and is: tetraethyl orthosilicate: deionized water: ammoniacal liquor: ethanol=1: 4-40:0.2-1:20-50, it is hydrolyzed at 10-30 DEG C and polymerisation 24-72 h, obtains Nano-meter SiO_22Alkaline sol, Heating reflux reaction 0.5-2 h deamination, and make Nano-meter SiO_22Particle crystallization is grown up, and is then the second of 30% by mass percentage concentration Acid regulation colloidal sol pH is 2-3, obtains the Nano-meter SiO_2 that mass percentage concentration is 5%-10%2Acidic sol, records nanoparticle in colloidal sol Sub-average grain diameter is 40nm；
(3) in glass reactor, it is separately added into the acetic acid that absolute ethyl alcohol, deionized water and mass percentage concentration are 30%, makes molten Liquid pH is 2-3；Organo-silicon coupling agent KH550, organo-silicon coupling agent KH560 or organo-silicon coupling agent KH570 are added glass anti- Answering in device solution so that it is be at room temperature hydrolyzed and polymerisation 24-72 h, controlling material molar ratio is: organosilicon coupling Agent: deionized water: acetic acid: ethanol=1:3-30:0.2-1:20-50, it is having of 5%-10% that reaction generates mass percentage concentration Machine silicon nano-resin colloidal sol, recording nano particle average grain diameter in colloidal sol is 10nm；
(4) in glass reactor, the Nano-meter SiO_2 that mass percentage concentration is 5%-10% it is initially charged2Acidic sol and solvent, then drip The nano-TiO of 3%-5%2Colloidal sol, stirring reaction 4-8 h at 40-50 DEG C so that it is copolymerization forms nuclear shell structure nano TiO2Colloidal sol, It is cooled to room temperature, adds the organic silicon nano resin sol of 5%-10%, continue stirring reaction 8-12 h, obtain percent mass dense Degree is the nano-TiO of 3%-10%2Colloidal sol；
(5) with needle tubing by organic silicon nano TiO2Colloidal sol drops in the 100mm 100mm fluorine-doped tin dioxide conduction glass of compacted zone On glass substrate, with the coating of bar spreader uniformly, controlling wet-film thickness 3000-5000 nm, rear thicknesses of layers is dried in solvent volatilization For 200-600nm, then by 110-150 DEG C of heated-air drying 30 minutes, make colloidal sol be fully cured, form the uniform nano-TiO in surface2 Framework film；
(6) nano-TiO is recorded2Framework film surface area is 40-60m2/ g, to substrate material surface adhesive force one-level, it is seen that light transmission Rate 70%-85%, is tested by damp heat test.
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Publication number Priority date Publication date Assignee Title
CN106634078A (en) * 2016-12-26 2017-05-10 福州名谷纳米科技有限公司 Core-shell structure hybrid sol with photocatalysis characteristic, and preparation and application thereof
CN106634078B (en) * 2016-12-26 2019-11-12 福州名谷纳米科技有限公司 A kind of nuclear case structure hybridization colloidal sol and its preparation and application with photocatalysis characteristic
CN107452878A (en) * 2017-08-28 2017-12-08 戚明海 A kind of perovskite solar cell containing titanate esters and preparation method thereof
CN109003822A (en) * 2018-07-21 2018-12-14 欧陈珍 Dye-sensitized solar cells based on titanium dioxide core shell particles light anode
CN113058447A (en) * 2021-04-23 2021-07-02 常州苏南水环境研究院有限公司 Preparation method of porous flat ceramic nanofiltration body based on silicon-zirconium sol
CN113893849A (en) * 2021-10-29 2022-01-07 安徽工业大学 Layered perovskite type catalyst compounding method and composite catalyst

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