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Ni<2+>-doped titanium oxide sol for preparation of self-cleaning film and preparation method thereof

A technology of titanium dioxide and nickel ions, which is applied in the direction of coating, etc., can solve the problems of rare technology, reduce the adhesion of inorganic particles to the surface, and the general self-cleaning performance of the material surface, so as to reduce the adhesion, facilitate large-scale industrial production, and formula And the effect of simple and feasible process

Inactive Publication Date: 2011-06-01
SANMING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, technologies that can take into account both superhydrophilic and photocatalytic properties are relatively rare.
The self-cleaning performance of the surface of the material with strong photocatalytic performance but not taking into account the super-hydrophilic performance is average, especially for the inorganic particles in the dirt. The surface water film with extremely small friction coefficient reduces the adhesion of inorganic particles to the surface, so that the purpose of rapid and thorough self-cleaning effect cannot be achieved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A kind of nickel ion (Ni 2+ ) doped titania sol comprising solution A and solution B mixed together;

[0024] Where solution A includes butyl titanate Ti(OC) with a molar ratio of 1.000:6.667:0.200 4 h 9 ) 4 , anhydrous ethanol CH 3 CH 2 OH, glacial acetic acid CH 3 COOH;

[0025] Wherein solution B includes absolute ethanol CH with a molar ratio of 3.333:0.500:1.000:0.020 3 CH 2 OH, acetylacetone CH 3 COCH 2 COCH 3 , distilled water H 2 O, nickel nitrate Ni(NO 3 ) 2 ;

[0026] After the solution A is mixed with the solution B, the molar ratio of butyl titanate to nickel nitrate is 1:0.020;

[0027] The static contact angle of the film produced by this sol is 0°, the hydrophilic property of the film reaches the best, and the film shows super-hydrophilic property.

Embodiment 2

[0029] Compared with embodiment 1, the present embodiment is different in that:

[0030] The solution B includes absolute ethanol CH with a molar ratio of 3.333:0.500:1.000:0.030 3 CH 2 OH, acetylacetone CH 3 COCH 2 COCH 3 , distilled water H 2 O, nickel nitrate Ni(NO 3 ) 2 ;

[0031] After the solution A is mixed with the solution B, the molar ratio of butyl titanate to nickel nitrate is 1:0.030;

[0032] The static contact angle of the film produced by using this sol is 8.0°, and the hydrophilic property of the film is obviously improved, showing super-hydrophilic property.

Embodiment 3

[0034] Compared with embodiment 1, the present embodiment is different in that:

[0035] The solution B includes absolute ethanol CH with a molar ratio of 3.333:0.500:1.000:0.025 3 CH 2 OH, acetylacetone CH 3 COCH 2 COCH 3 , distilled water H 2 O, nickel nitrate Ni(NO 3 ) 2 ;

[0036] After the solution A is mixed with the solution B, the molar ratio of butyl titanate to nickel nitrate is 1:0.025;

[0037] The static contact angle of the film produced by using this sol is 6.0°, and the hydrophilic property of the film is obviously improved, showing super-hydrophilic property.

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PUM

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Abstract

The invention discloses Ni<2+>-doped titanium oxide sol for the preparation of a self-cleaning film. The titanium oxide sol contains a solution A and a solution B, wherein the solution A contains butyl titanate, absolute alcohol and glacial acetic acid in a molar ratio of 1.000:6.667:0.200; the solution B contains absolute alcohol, acetylacetone, distilled water and nickel nitrate in a molar ratio of 3.333: 0.500: 1.000: (0.020-0.030); and after the solution A is mixed with the solution B, the molar ratio of butyl titanate to nickel nitrate is 1: (0.020-0.030). The invention also discloses a preparation method of the sol. The sol in the invention has the following advantages: (1) the formula and process are simple and practical, the sol is suitable for the industrial mass production; and (2) the film prepared by the sol has photocatalytic property and super-hydrophilic property, thus the photocatalytic degradation of organic pollutants can be promoted; and a surface water film can be formed on the surface of the material, thus the adhesive force of inorganic contamination particles to the surface can be reduced, the contaminants on the surface of the material can be cleaned up thoroughly and the self-cleaning function can be realized truly.

Description

technical field [0001] The invention relates to a kind of nickel ion (Ni 2+ ) doped titania sol and its preparation method. The invention belongs to the field of photocatalyst self-cleaning thin film materials. Background technique [0002] At present, technologies such as using solar energy to treat sewage and dirt are emerging in an endless stream, among which the use of TiO 2 Photocatalyst technology is also widespread. However, technologies that can take into account both superhydrophilic and photocatalytic properties are relatively rare. The self-cleaning performance of the surface of the material with strong photocatalytic performance but not taking into account the super-hydrophilic performance is average, especially for the inorganic particles in the dirt. The surface water film with extremely small friction coefficient reduces the adhesion of inorganic particles to the surface, so that the purpose of rapid and thorough self-cleaning effect cannot be achieved. ...

Claims

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Application Information

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IPC IPC(8): C09D1/00C09D7/12C09D5/00
Inventor 高立华高松华王宗篪肖波齐
Owner SANMING UNIV
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