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Carbon nanotube/tetrapod-shaped zinc oxide whisker composite antibacterial material and preparation method thereof

A technology of four-needle zinc oxide and zinc oxide whiskers is applied in the fields of botanical equipment and methods, chemicals for biological control, animal repellents, etc., and can solve the problems of single antibacterial mechanism and low antibacterial activity. , to achieve the effect of high safety, less environmental pollution and improved dispersibility

Active Publication Date: 2016-04-13
SHENZHOUSPACEBIOTECHGRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The inventors found for the first time that four-needle zinc oxide whiskers were loaded and modified with carbon nanotubes, and the two nanomaterials could produce synergistic catalytic activity through mechanisms such as structural hybridization and bring better antibacterial effects: either Play the role of super adsorption of carbon nanotubes, and play the role of four-needle zinc oxide whiskers to release active substances to kill bacteria, which can solve the antibacterial mechanism of four-needle zinc oxide whiskers only by releasing active substances , the problem that the antibacterial activity is not too high

Method used

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  • Carbon nanotube/tetrapod-shaped zinc oxide whisker composite antibacterial material and preparation method thereof
  • Carbon nanotube/tetrapod-shaped zinc oxide whisker composite antibacterial material and preparation method thereof
  • Carbon nanotube/tetrapod-shaped zinc oxide whisker composite antibacterial material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Preparation of Example 1 Carbon Nanotube / Tetraacicular Zinc Oxide Whisker Composite Antibacterial Material and Determination of Antibacterial Ability (1)

[0052] The steps are:

[0053] (a) 1mg / mL graphene oxide aqueous suspension is added to the container that the mass ratio of 1:2 carbon nanotubes and tetraacicular zinc oxide whiskers mixed powder is housed, to form a mixed solution;

[0054] (b) the mixed solution obtained in step (a) was mechanically stirred at a speed of 200 rpm and ultrasonic waves were jointly treated with a frequency of 40kHZ and a power of 100W for 60 minutes to obtain a carbon nanotube / zinc oxide whisker composite dispersion;

[0055] (c) Filter the composite dispersion obtained in step (b) with an organic filter, and dry at 70° C. for 12 hours to obtain a carbon nanotube / tetraacicular zinc oxide whisker composite antibacterial material.

[0056] figure 1 and figure 2 These are the microscopic topography images of four-needle zinc oxide w...

Embodiment 2

[0066] Example 2 Preparation of carbon nanotube / tetraacicular zinc oxide whisker composite antibacterial material and measurement of antibacterial ability (two)

[0067] The steps are:

[0068] (a) 0.5mg / mL graphene oxide aqueous suspension is added to the container that is equipped with the carbon nanotube and the tetraacicular zinc oxide whisker mixed powder that mass ratio is 1:10, forms mixed solution;

[0069] (b) the mixed solution obtained in step (a) was mechanically stirred at a speed of 100 rpm and ultrasonic waves were treated with a frequency of 40kHZ and a power of 80W for 30 minutes to obtain a carbon nanotube / zinc oxide whisker composite dispersion;

[0070] (c) Filter the composite dispersion obtained in step (b) with an organic filter, and dry at 40° C. for 48 hours to obtain a carbon nanotube / tetraacicular zinc oxide whisker composite antibacterial material.

[0071] The carbon nanotube / tetraacicular zinc oxide whisker composite antibacterial material obtain...

Embodiment 3

[0073] Example 3 Preparation of Carbon Nanotubes / Tetraacicular Zinc Oxide Whiskers Composite Antibacterial Material and Determination of Antibacterial Ability (3)

[0074] The steps are:

[0075] (a) 2mg / mL graphene oxide aqueous suspension is added to the container that is equipped with the carbon nanotube and tetraacicular zinc oxide whisker mixed powder that mass ratio is 1:1, forms mixed solution;

[0076] (b) the mixed solution obtained in step (a) was mechanically stirred at a speed of 200 rpm and ultrasonic waves were jointly treated with a frequency of 40kHZ and a power of 100W for 60 minutes to obtain a carbon nanotube / zinc oxide whisker composite dispersion;

[0077] (c) Filter the composite dispersion obtained in step (b) with an organic filter, and dry at 70° C. for 36 hours to obtain a carbon nanotube / tetraacicular zinc oxide whisker composite antibacterial material.

[0078] The carbon nanotube / tetraacicular zinc oxide whisker composite antibacterial material ob...

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Abstract

The invention provides a tetrapod-shaped zinc oxide whisker-containing antibacterial material. The antibacterial material is characterized in that carbon nanotubes uniformly adhere to the surface of the zinc oxide whisker. An experiment proves that the two materials produce synergetic bactericidal effects better than that of carbon nanotube or tetrapod-shaped zinc oxide whisker. The tetrapod-shaped zinc oxide whisker-containing antibacterial material does not release metal ions and has high safety. The preparation method has simple processes and low energy consumption.

Description

Technical field: [0001] The invention relates to an inorganic antibacterial material, in particular to a composite antibacterial material loaded with carbon nanotube tetraacicular zinc oxide whiskers and a preparation method thereof. Background technique: [0002] The use of antibacterial materials is the simplest and most effective way to effectively prevent the production and growth of bacteria. Antibacterial materials refer to a new class of functional materials that have the functions of sterilizing and inhibiting bacterial growth. [0003] Zinc oxide itself has broad-spectrum antibacterial properties, and the four-needle zinc oxide whiskers have better antibacterial properties due to their nano-scale needle tips and nano-scale growth steps that enhance their interaction with the surrounding environment. Studies have shown that the antibacterial effect of tetraacicular zinc oxide whiskers is mainly derived from the hydrogen peroxide it produces (Journal of Fermentation ...

Claims

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Application Information

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IPC IPC(8): A01N59/16A01N59/00A01N25/00A01P1/00
CPCA01N25/00A01N59/00A01N59/16A01N2300/00
Inventor 印红徐晓玲周祚万陈菁菁徐侃彦
Owner SHENZHOUSPACEBIOTECHGRP
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