Preparing method for titanium-dioxide composite nanometer antibacterial material and product thereof

A nano antibacterial material, titanium dioxide technology, applied in the direction of chemical instruments and methods, botanical equipment and methods, alkali metal compounds, etc., can solve the problems of low photocatalytic efficiency and weak antibacterial effect, and achieve simple preparation methods, full utilization, The effect of superior performance

Inactive Publication Date: 2017-04-26
QINGDAO HAIZHIXING BIOLOGICAL SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Titanium dioxide has a photocatalytic effect, through photoexcitation, the valence band electrons jump to the conduction band, the excited electrons in the conduction band have strong reducibility, and the holes in the valence band have strong oxidation ability, which can kill and inhibit bacteria However, the titanium dioxide antibacterial agent needs ultraviolet light irradiation, the photocatalytic efficiency is low, and the antibacterial effect is weak in practical application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A preparation method of titanium dioxide composite nano antibacterial material, comprising the following steps:

[0030] (1) Preparation of Enteromorpha nano-dry powder: After the fresh Enteromorpha is washed to remove impurities such as sand grains, freeze-dried to obtain a dry product, the obtained dry product is ultrafinely pulverized to a 500-mesh micron powder, and the obtained micron powder is placed in a ball mill tank for further processing High-energy ball milling, wherein the mass ratio of zirconia balls: micron powder: water is 8:4:1, the rotating speed is 2500 rpm, and the ball milling time is 3 hours. The obtained powder is placed in a 60°C oven and dried to obtain Enteromorpha nano dry powder;

[0031] (2) Preparation of spinning precursor solution: add 3.4g of n-butyl titanate and 2g of sulfosalicylic acid into 9ml of absolute ethanol, stir for 1 hour and mix evenly, then add 2.2g of enteromorpha nano dry powder obtained in step (1) , magnetically stirred...

Embodiment 2

[0038] A preparation method of titanium dioxide composite nano antibacterial material, comprising the following steps:

[0039] (1) Preparation of Enteromorpha nano-dry powder: After the fresh Enteromorpha is washed to remove impurities such as sand grains, freeze-dried to obtain a dry product, the obtained dry product is ultrafinely pulverized to a 500-mesh micron powder, and the obtained micron powder is placed in a ball mill tank for further processing High-energy ball milling, wherein the mass ratio of zirconia ball: micron powder: water is 8:4:1, the rotating speed is 3000 rpm, the ball milling time is 2 hours, and the obtained powder is placed in an oven at 60° C. to dry to obtain Enteromorpha nano dry powder;

[0040] (2) Preparation of spinning precursor solution: add 4g of n-butyl titanate and 2g of acetic acid into 8ml of absolute ethanol, stir magnetically for 1 hour and mix evenly, then add 1.3g of Enteromorpha nano dry powder obtained in step (1), and stir magnetic...

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PUM

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Abstract

The invention discloses a preparing method for a titanium-dioxide composite nanometer antibacterial material and a product thereof. The preparing method includes the steps that a titanium-dioxide/active-carbon-particle/silver-particle composite nanometer fiber material is prepared with the electrostatic spinning method, nanometer active-carbon particles obtained through enteromorpha nanometer dry-powder carbonization are evenly distributed in titanium-dioxide nanometer fibers and formed, enteromorpha-active-carbon/titanium-dioxide composite nanometer fibers and silver ions are evenly distributed on the surfaces of the enteromorpha-active-carbon/titanium-dioxide composite nanometer fibers to form the titanium-dioxide/active-carbon-particle/silver-particle composite nanometer fiber material. According to the titanium-dioxide composite nanometer antibacterial material, as the antibacterial effect of nanometer silver is combined, the high antibacterial efficiency is achieved; meanwhile, the attaching effect of active carbon is combined, moisture can be absorbed, the environment is kept dry, bacterium breeding is reduced, and therefore the better antibacterial effect is achieved.

Description

technical field [0001] The invention relates to a preparation method of a titanium dioxide composite nano antibacterial material and a product thereof. Background technique [0002] Titanium dioxide, the chemical formula is TiO 2 , commonly known as titanium dioxide, is mostly used in photocatalysts and cosmetics, and can be sterilized and sterilized by ultraviolet rays. It is now being widely developed and has the opportunity to become a new industry in the future. Titanium dioxide can be extracted from ilmenite by acid decomposition, or obtained by decomposition of titanium tetrachloride. Titanium dioxide is stable in nature and is widely used as a white pigment in paints. It has good hiding power, similar to lead white, but it does not turn black like lead white; it has the same persistence as zinc white. Titanium dioxide is also used as a matting agent for enamel, which produces a very bright, hard and acid-resistant enamel finish. Titanium dioxide can be made into a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N59/16A01P3/00A01P1/00B01J20/20B01J20/28B01J20/30D04H1/4282D04H1/728
CPCA01N59/16B01J20/20B01J20/28023D04H1/4282D04H1/728
Inventor 袁国防林安王建军张建谷
Owner QINGDAO HAIZHIXING BIOLOGICAL SCI & TECH
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