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Method for improving antibacterial property of tetrapod-like zinc oxide whisker

A four-needle zinc oxide and whisker technology, which is applied in the field of preparation of four-needle zinc oxide whisker composite antibacterial materials, can solve the problem of complex silver ion doping process, few active centers of needles, and poor tip nano-effect and other problems, to achieve broad application prospects, improve the sterilization ability, and the effect of strong sterilization ability

Active Publication Date: 2012-07-18
SOUTHWEST JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its acicular body has few active centers, and its tip nano effect is poor. In order to improve its antibacterial effect, one of its methods is to add silver ions (such as ZL 200510115039.9). a resource limitation

Method used

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  • Method for improving antibacterial property of tetrapod-like zinc oxide whisker
  • Method for improving antibacterial property of tetrapod-like zinc oxide whisker
  • Method for improving antibacterial property of tetrapod-like zinc oxide whisker

Examples

Experimental program
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Effect test

Embodiment 1

[0024] A method for improving the antibacterial properties of tetraacicular zinc oxide whiskers, the steps are:

[0025] A, powdery tetraacicular zinc oxide whiskers are added to potassium sodium tartrate aqueous solution to form a paste, stirred for 30 minutes, the mol ratio of described potassium sodium tartrate and tetraacicular zinc oxide whiskers is 1: 100; Slowly add an aqueous solution of cupric chloride equimolar to potassium sodium tartrate under stirring (that is, the molar mass of cupric chloride contained in the aqueous solution is equal to potassium sodium tartrate); after that, continue to stir for 60 minutes; finally, filter , washing, and drying to obtain tetraacicular zinc oxide whisker composite powder with nano-copper tartrate deposited on the surface in situ;

[0026] B. Heat the composite powder obtained in step A to 270° C. for 60 minutes in a hydrogen atmosphere, and cool to room temperature to obtain tetrapod-shaped zinc oxide whisker powder with nano-c...

Embodiment 2

[0030] A method for improving the antibacterial properties of tetraacicular zinc oxide whiskers, the steps are:

[0031] A, powdery tetraacicular zinc oxide whiskers are added to potassium sodium tartrate aqueous solution to form a paste, stirred for 30 minutes, the mol ratio of described potassium sodium tartrate and tetraacicular zinc oxide whiskers is 0.8: 100; Slowly add an aqueous solution of copper chloride in an equimolar amount to potassium sodium tartrate under stirring; then, continue to stir for 60 minutes; finally, after filtering, washing, and drying, a four-needle-shaped copper tartrate nano-copper tartrate is deposited in situ on the surface. Zinc oxide whisker complex powder;

[0032] B. Heat the composite powder obtained in step A to 270° C. for 40 minutes in a hydrogen atmosphere, and cool to room temperature to obtain tetraacicular zinc oxide whisker powder with nano-copper deposited on the surface.

Embodiment 3

[0034] A method for improving the antibacterial properties of tetraacicular zinc oxide whiskers, the steps are:

[0035] A, the powdery tetraacicular zinc oxide whiskers are added to the aqueous solution of sodium potassium tartrate to form a suspension, stirred for 20 minutes, and the mol ratio of the described potassium sodium tartrate and tetraacicular zinc oxide whiskers is 0.6: 100; Slowly add the aqueous solution of cupric chloride equimolar with potassium sodium tartrate under stirring state again; Afterwards, continue to stir 50 minutes; Finally, through filtering, washing, drying, obtain the tetrachloride that the in situ deposition of surface has nano-copper tartrate Acicular zinc oxide whisker complex powder;

[0036] B. Heat the composite powder obtained in step A to 270° C. for 30 minutes in a hydrogen atmosphere, and cool to room temperature to obtain tetraacicular zinc oxide whisker powder with nano-copper deposited on the surface.

[0037] Figure 4 It is a g...

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Abstract

A method for improving the antibacterial property of a tetrapod-like zinc oxide whisker comprises the steps of A. adding the tetrapod-like zinc oxide whisker taking the shape of white powder in an aqueous solution of potassium sodium tartrate to form paste or suspension and stirring for 10-30 minutes, wherein the mole ratio of the potassium sodium tartrate to the tetrapod-like zinc oxide whisker is (0.1-1):100; then under the state of stirring, slowly adding an aqueous solution of copper chloride with the same molar weight as the potassium sodium tartrate; later continuing stirring for 30-60 minutes; at last, conducting filtering, washing and drying, thus obtaining tetrapod-like zinc oxide whisker compound powder with nanometer cupric tartrate in-situ deposited on the surface; and B. increasing the temperature of the compound powder to 270-300 DEG C, keeping the temperature for 15-60 minutes, and conducting cooling to room temperature, thus obtaining the tetrapod-like zinc oxide whisker with strong antibacterial property. The powder obtained by the method has strong antibacterial capability, sterilizing rate of 98.5%-99.9%, low cost, does not change color when in use and is easy to popularize.

Description

technical field [0001] The invention relates to a preparation method of an antibacterial agent material, in particular to a preparation method of a tetraacicular zinc oxide whisker composite antibacterial agent material. Background technique [0002] Harmful bacteria exist in various places around us, such as the floor and wall of the house we live in, the furniture we use, home appliances, clothing and daily necessities, etc. In 1996, a nationwide outbreak of O-157 Escherichia coli infection in a large area in Japan not only claimed many lives, but also caused global panic. According to statistics, the number of deaths caused by bacterial infection in the world is close to 20 million every year, accounting for more than 30% of the total number of deaths; the cross-bacterial infection rate of various hospitals exceeds 10%. To effectively prevent the generation and growth of bacteria, the use of antibacterial materials is the simplest and most effective method. Antibacteria...

Claims

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Application Information

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IPC IPC(8): A01N59/20A01N59/16A01P1/00
Inventor 周祚万徐晓玲简贤陈丹范希梅段小飞
Owner SOUTHWEST JIAOTONG UNIV
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