Preparation of multielement codoped nanaotitania film

A nano-titanium dioxide and co-doping technology, which is applied in the field of preparation of multi-element co-doped nano-titanium dioxide films, can solve the problems of unseen and few multi-element doped titanium dioxide films.

Inactive Publication Date: 2008-12-24
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There are few studies on multi-element doped titanium dioxide thin films, and there are no relevant patents and literature reports

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1, a kind of multi-element doped nano-titanium dioxide film, the specific preparation method is as follows:

[0015] 1), get 60 grams of titanium dioxide sol containing anatase nanocrystals, add ferric nitrate nonahydrate, make the mol ratio of Fe and Ti be 0.08: 100; add silver nitrate, make the mol ratio of Ag and Ti be 0.04: 100; Add guanidine hydrochloride so that the molar ratio of N to Ti is 30:100; thus a mixed solution is obtained;

[0016] 2), the above mixed solution was continuously magnetically stirred under the condition of a water bath, the stirring time was 60 minutes, and the temperature of the water bath was 55°C to obtain a uniform and clear sol;

[0017] 3) After storing the above-mentioned sol at room temperature for 10 days, the aged sol was obtained; then, the above-mentioned aged sol was used to prepare a film on the dip-lift film-forming machine by the dip-lift method, specifically: continuous Coating 2-4 layers to form a film of 2-4 ...

Embodiment 2

[0021] Embodiment 2, a kind of multi-element doped nano-titanium dioxide film, the specific preparation method is as follows:

[0022] 1), get 60 grams of anatase-containing nano-sol, add ferric nitrate nonahydrate, make the molar ratio of Fe and Ti be 0.8:100; add silver nitrate, make the molar ratio of Ag and Ti be 0.02:100; add guanidine hydrochloride , so that the molar ratio of N and Ti is 6: 100; thus obtain a mixed solution;

[0023] 2), the above mixed solution was continuously magnetically stirred under the condition of a water bath, the stirring time was 80 minutes, and the temperature of the water bath was 45°C to obtain a uniform and clear sol;

[0024] 3) After storing the above-mentioned sol at room temperature for 11 days, the aged sol was obtained; then, the above-mentioned aged sol was used to prepare a thin film on the dip-pull film forming machine by dipping and pulling method, specifically: continuous Coating 2-4 layers to form a film of 2-4 layers to obta...

Embodiment 3

[0028] Embodiment 3, a kind of multi-element doped nano-titanium dioxide film, the specific preparation method is as follows:

[0029] 1), take 60 grams of anatase-containing sol, add ferric nitrate nonahydrate, make the molar ratio of Fe and Ti be 0.4:100 respectively; add silver nitrate, make the molar ratio of Ag and Ti be 0.12:100; add guanidine hydrochloride , so that the molar ratio of N and Ti is 10:100; thus obtain a mixed solution;

[0030] 2), the above mixed solution was continuously magnetically stirred under the condition of a water bath, the stirring time was 70 minutes, and the temperature of the water bath was 50° C. to obtain a uniform and clear sol;

[0031] 3) After storing the above-mentioned sol at room temperature for 12 days, the aged sol was obtained; then, the above-mentioned aged sol was used to prepare a film on the dip-pull film forming machine by dipping and pulling method, specifically: continuous Coating 2-4 layers to form a film of 2-4 layers t...

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PUM

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Abstract

The invention discloses a method for preparing a multielement co-doped nano titanium dioxide film comprising the following steps: 1) adding ferric nitrate nonahydrate, silver nitrate and guanidine hydrochloride solid into abatase titanium dioxide solution to prepare a mixed solution; 2) sustainably magnetically stirring the mixed solution under the water bath condition and obtaining an uniform sol; 3) storing the sol at room temperature for 10-12 days to obtain aging solution, preparing a coating glass slide by the aging solution and drying; 4) heat-treating the dried coating glass slide at 350-450 DEG C for 1 hour to obtain the multielement co-doped nano titanium dioxide film. The titanium dioxide film of the invention has functions of achievement the red shift of the ultraviolet absorbance, visible light response of the photocatalysis and no light antibacteria.

Description

technical field [0001] The invention relates to a method for preparing a multi-element co-doped nano titanium dioxide film. Background technique [0002] Nano-titanium dioxide film is an important functional material, which has important application prospects in the storage and utilization of solar energy, photochemical conversion and environmental treatment of organic pollutants. There are many preparation methods for nano-TiO2 thin films, among which the thin-film preparation method based on the sol-gel method is the most researched TiO2 thin-film preparation method at present. The advantage of this method is that it is easy to form a large-area film and be fixed on a complex-shaped substrate. At present, the sol-gel method is used to prepare thin films on the surface of ordinary glass. Titanium dioxide sol is prepared by using sol-gel process as raw material, and then coated to prepare titanium dioxide thin film. This method requires a higher heat treatment temperature ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/23
Inventor 郭兴忠杨辉傅晓建施少君张玉青张玲洁
Owner ZHEJIANG UNIV
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