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Metal particle combination TiO2 photocatalyst reinforcement anti-bacterial composition and preparation method thereof

A kind of composition, the technology of particle, be used in the preparation field of above-mentioned composition sol

Inactive Publication Date: 2012-11-21
李文发
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, having light to excite TiO 2 For semiconductors such as oxides, it is still a difficult problem to use in places where there is no light or dark places.

Method used

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  • Metal particle combination TiO2 photocatalyst reinforcement anti-bacterial composition and preparation method thereof
  • Metal particle combination TiO2 photocatalyst reinforcement anti-bacterial composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Add modifier peroxide to titanium precursor hydrolyzate solution to make the liquid into light yellow transparent solution, adjust pH value and remove excess modifier. The modified solution is heated for crystallization treatment. Form the sterilizing, deodorizing, anti-mildew environmental purification composition required by item 1. Anatase crystalline photocatalytic neutral TiO 2 Sol.

[0033] Choose copper sulfate and anatase crystal TiO 2 neutral aqueous solution. TiO 2 The average particle size distribution of 20nm or less, the content is 0.85% by weight. in TiO 2 TiO in neutral aqueous solution 2 The ratio of 0.80% by weight is added with copper sulfate to form a uniform and transparent photocatalyst TiO 2 Cu as the main body ++ / TiO 2 Sol.

[0034]

Embodiment 2

[0036] Selection of ferric chloride and anatase crystalline photocatalyst TiO 2 neutral aqueous solution. TiO 2 The average particle size distribution of 20nm or less, the content is 0.85% by weight. in TiO 2 TiO in neutral aqueous solution 2 The ratio of 0.80% by weight is added with ferric chloride (ferric salt) to form a uniform and transparent photocatalyst TiO 2 Fe as the main body +++ / TiO 2 Sol.

[0037]

Embodiment 3

[0039] Choose silver nitrate and anatase crystal TiO 2 neutral aqueous solution. TiO 2 The average particle size distribution of 20nm or less, the content is 0.85% by weight. in TiO 2 TiO in neutral aqueous solution 2 The ratio of 0.80% by weight is added with silver inorganic salt to form a uniform and transparent photocatalyst TiO 2 Ag as the main body + / TiO 2 Sol.

[0040]

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Abstract

The invention provides a metal particle combination nanometer photocatalyst TiO2 composition Ag<+>,Cu<++>,Fe<++>(<+++>) / TiO2 and a preparation method thereof, wherein the composition has characteristics of broad spectrum reinforcement and long-acting anti-bacterial effect. According to the present invention, a peroxide complexation base titanium metal oxide TiO2 anti-bactericidal composition is selected, wherein atom surfaces of the composition are modified by a peroxide, a stable anti-bacterial photocatalyst sol is formed in water, the pH value is neutral, and characteristics of film forming and long-acting anti-bacterial effect are provided; the particle size of the TiO2 particles is less than 20 nm, the crystal form of the TiO2 particles is an anatase type crystal, the electronic energy level is 3.2 eV, and an electron-hole effect is generated under an action of light, such that harmful organic matters contacting the TiO2 particles are decomposed so as to provide a harmless characteristic, and NOx and SOx are converted and removed from the atmosphere; the photocatalyst sol is added with the metal particles Ag<+>,Cu<++>,Fe<++>(<+++>) / TiO2 to produce a broad-spectrum reinforcement anti-bacterial composition, which provides strong anti-bacterial ability under visible light or in dark places, wherein the composition can form a film at a room temperature, can form a film on the surface of a high temperature resistance material, and can further be made into supplies with functions of anti-bacterial and photocatalysis.

Description

technical field [0001] The invention relates to an anatase crystal nano-photocatalyst TiO, which uses peroxide to modify the atomic surface. 2 Sterilizing composition as the main body, adding metal particles to form Ag + 、Cu ++ , Fe ++（+++） / TiO 2 Broad-spectrum enhanced antibacterial photocatalyst composition. The present invention also relates to the preparation method and application of the above composition sol. Background technique [0002] Around us, we are threatened by various harmful substances invisible to the eyes every day. There are various dangers such as air pollution caused by automobile exhaust, sick housing syndrome caused by building materials, mold harmful to human body, pathogenic bacteria, miscellaneous bacteria and viruses caused by airborne infection. Due to the pollution of the earth's environment, large-scale health emergencies have occurred frequently in recent years, such as "SARS", "bird flu", "type A influenza", "post-earthquake infection"...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/745B01J23/50B01J23/72B01J21/06A01N59/20A01N59/16A01P1/00A01P3/00
Inventor 不公告发明人
Owner 李文发
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