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Method for forming metal composite titanium dioxide nano particle film on glass surface

A metal composite and titanium dioxide technology, which is applied in the field of forming metal composite titanium dioxide nanoparticle films on glass surfaces, can solve the problems of affecting the photocatalytic activity of titanium dioxide particles, low degree of crystallization, short hydrophilic retention time of titanium dioxide films, etc. Effect of particle growth, good photocatalytic performance, improved optical performance and photocatalytic activity

Inactive Publication Date: 2008-06-04
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The investigation of weather resistance also shows that the retention time of the hydrophilicity of the titanium dioxide film prepared by the sol-gel method is very short, which may be related to the following reasons: the coating solution-titanium dioxide sol contains a large amount of organic matter, and the film has a high affinity for organic matter after sintering. Relatively good compatibility; the degree of crystallization of titanium dioxide is low, thus affecting the photocatalytic activity of titanium dioxide particles

Method used

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  • Method for forming metal composite titanium dioxide nano particle film on glass surface
  • Method for forming metal composite titanium dioxide nano particle film on glass surface
  • Method for forming metal composite titanium dioxide nano particle film on glass surface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Dissolve 25 parts by weight of titanium tetrachloride in 75 parts by weight of ice water, and keep stirring for 30 minutes in an ice-water bath at 0-5° C. to obtain a transparent and clear aqueous solution of titanium tetrachloride. 1 part by weight of ferric trichloride is dissolved in 99 parts by weight of deionized water to generate an aqueous solution of iron salt. Add 25 parts by weight of sodium hydroxide to 75 parts by weight of deionized water to obtain an alkaline solution. Under rapid stirring, add 20 parts by weight of iron salt aqueous solution to 40 parts by weight of the above-mentioned titanium tetrachloride aqueous solution, after continuing to stir for several minutes, add 10 parts by weight of alkali solution, after continuing to stir for 10 minutes, add 30 parts deionized water, stirred evenly, transferred into a polytetrafluoroethylene-lined medium pressure autoclave, kept at a constant temperature of 150°C for 2 hours, and cooled naturally to room t...

Embodiment 2

[0059] Dissolve 60 parts by weight of titanium tetrachloride in 40 parts by weight of ice water, and keep stirring for 2 hours in an ice-water bath at 0-5° C. to obtain a transparent and clear aqueous solution of titanium tetrachloride. 2 parts by weight of copper nitrate are dissolved in 99 parts by weight of deionized water to generate a copper salt solution. Add 10 parts by weight of sodium hydroxide to 90 parts by weight of deionized water to obtain an alkaline solution. Under rapid stirring, add 10 parts by weight of copper salt solution to 14 parts by weight of titanium tetrachloride aqueous solution, after continuing to stir for several minutes, add 0.5 parts by weight of alkali solution, add 75.5 parts by weight of deionized water, and continue stirring for 1 After 1 hour, transfer to a polytetrafluoroethylene-lined autoclave, keep the temperature at 100°C for 2 hours, and cool to room temperature naturally. The supernatant was poured off, the lower precipitate was fi...

Embodiment 3

[0062] Dissolve 22 parts by weight of titanium tetrachloride in 78 parts by weight of ice water, keep stirring for 4 hours in an ice-water bath at 0-5°C, and filter to obtain an aqueous solution of titanium tetrachloride; add 0.1 parts by weight of silver nitrate and 5 parts by weight of ammonia water 94.9 parts by weight of deionized water was used to obtain an ammine-complexed silver solution. 37 parts by weight of potassium hydroxide was added to 63 parts by weight of water to obtain an alkaline solution. Under vigorous stirring, add 5 parts by weight of silver solution, 30 parts by weight of alkali solution to 45 parts by weight of the above-mentioned titanium tetrachloride aqueous solution, and then add 20 parts by weight of deionized water. After continuous stirring for 10 minutes, transfer to poly In a tetrafluoroethylene-lined medium-pressure autoclave, keep the temperature at 250°C for 1 hour, and cool down to room temperature naturally. The supernatant was poured of...

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Abstract

The invention pertains to the application field of nano material and photocatalysis technology, in particular to a method for forming a serials of metal titanium dioxide nanoparticle film with functions of sterilization, anti-mildew, deodorant, degradation of organic pollutants, decomposition of harmful gases and good hydrophilic property. The method comprises: hydro-thermal synthesis method is adopted, which is of high crystallinity; the crystalline phases make up of the metal titanium dioxide nanoparticles which are then dispersed to form sol; thereby, the nanoparticles are solidified to form a layer of film on glass surface. The film has good performances of degradation organics, hydrophile and self-cleaning.

Description

technical field [0001] The invention belongs to the technical field of application of nanomaterials and photocatalysis, and particularly relates to the use of a hydrothermal method to synthesize titanium dioxide nanoparticles with a high degree of crystallization and a specific crystal form. The nanoparticles are redispersed to form a sol, and the coating film is thermally cured on the glass surface. A method for forming a series of metal composite titanium dioxide nanoparticle films with functions of sterilization, mildew resistance, deodorization, degradation of organic pollutants, decomposition of harmful gases and good hydrophilicity. Background technique [0002] In recent years, high-rise buildings and office buildings with glass curtain walls have sprung up in cities, especially in Beijing, Shanghai and other big cities. The emergence of these high-rise buildings has brought new problems for the cleaning of architectural glass, that is, the cleaning of glass must be d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/00C03C17/23C03C17/06
Inventor 刘春艳刘云
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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