Preparation method of silver composite antibacterial material of carbon nano tube

A carbon nanotube and composite antibacterial technology, which is applied in the fields of botanical equipment and methods, chemical instruments and methods, and chemicals for biological control, etc. Improve the antibacterial activity and avoid the effect of mutual agglomeration and deactivation

Inactive Publication Date: 2014-06-11
XIAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method uses carbon nanotubes as a support carrier, and silver nanoparticles are fixed on the carrier, which can eliminate the aggregation phenomenon of silver nanoparticles, solve the problem of mutual aggregation and inactivation of silver nanoparticles, and improve the antibacterial activity of silver nanoparticles

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Step 1. Plasma activation of carbon nanotubes: Soak 10 g of carbon nanotubes in 50 mL of absolute ethanol for 24 hours, then clean the soaked carbon nanotubes with deionized water, and dry them at 80° C. for 12 hours. The carbon nanotubes are put into the plasma activation instrument for plasma activation; the conditions of the plasma activation are: activation voltage 25V, activation power 50W, activation time 10min, activation gas is a mixed gas of argon, oxygen and chlorine, the pressure of the activation gas is 1000Pa, the volume percentage of argon in the activated gas is 85%, the volume percentage of oxygen is 14%, and the balance is chlorine;

[0024] Step 2, carbon nanotube sensitization: PdCl 2 and PbCl 2 Dissolve in deionized water to form a sensitizing solution with a total concentration of metal ions of 0.1mol / L, place the carbon nanotubes after plasma activation in step 1 in 50mL of sensitizing solution, and stir at a rate of 10r / min Stir the reaction for...

Embodiment 2

[0028] Step 1. Plasma activation of carbon nanotubes: Soak 10 g of carbon nanotubes in 50 mL of absolute ethanol for 20 hours, then clean the soaked carbon nanotubes with deionized water, and dry them at 90° C. for 12 hours. The carbon nanotubes are put into a plasma activator for plasma activation; the conditions for the plasma activation are: activation voltage 35V, activation power 100W, activation time 20min, activation gas is a mixed gas of argon, oxygen and chlorine, the pressure of the activation gas 2000Pa, the volume percentage of argon in the activated gas is 85%, the volume percentage of oxygen is 8%, and the balance is chlorine;

[0029] Step 2, carbon nanotube sensitization: PdCl 2 and PbCl 2 Dissolve in deionized water to form a sensitizing solution with a total concentration of metal ions of 0.2mol / L. Place the carbon nanotubes after plasma activation in step 1 in 100mL of the sensitizing solution, and stir at a rate of 30r / min. Stir the reaction for 50 minute...

Embodiment 3

[0033] Step 1. Plasma activation of carbon nanotubes: Soak 10 g of carbon nanotubes in 100 mL of absolute ethanol for 10 hours, then clean the soaked carbon nanotubes with deionized water, and dry them at 90 ° C for 11 hours. The carbon nanotubes are put into the plasma activation instrument for plasma activation; the conditions of the plasma activation are: activation voltage 40V, activation power 300W, activation time 30min, activation gas is a mixed gas of argon, oxygen and chlorine, the pressure of the activation gas 5000Pa, the volume percentage of argon in the activated gas is 90%, the volume percentage of oxygen is 6%, and the balance is chlorine;

[0034] Step 2, carbon nanotube sensitization: PdCl 2 and PbCl 2 Dissolve in deionized water to form a sensitizing solution with a total concentration of metal ions of 0.1mol / L. Place the carbon nanotubes after plasma activation in step 1 in 80mL of the sensitizing solution, under the condition that the stirring rate is 50r / ...

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Abstract

The invention discloses a preparation method of a silver composite antibacterial material of a carbon nano tube. The method comprises the following steps: 1, plasma activating of a carbon nano tube, namely soaking the carbon nano tube in absolute ethyl alcohol, cleaning and drying, and performing plasma activating in a plasma activating instrument; 2, sensitization of the carbon nano tube, namely preparing sensitizing liquid, sensitizing the carbon nano tube subjected to plasma activating in the sensitizing liquid, and drying the carbon nano tube after reaction; and 3, silver plating of the carbon nano tube, namely performing silver plating on the surface of the sensitized carbon nano tube under the protection of inert gases by adopting a vacuum plating machine to obtain the silver composite antibacterial material. According to the preparation method disclosed by the invention, the carbon nano tube is adopted as a supporting carrier, and the carbon nano tube is subjected to plasma activating and sensitizing in sequence, so that the activity of surface functional groups of the activated carbon nano tube is improved, and the silver plating is finally performed, so that agglomeration of silver nanoparticles can be eliminated, the problem of inactivation caused by mutual agglomeration of the silver nanoparticles can be solved, and the antimicrobial activity of the silver nanoparticles can be improved.

Description

technical field [0001] The invention belongs to the technical field of antibacterial materials, and in particular relates to a preparation method of a carbon nanotube silver composite antibacterial material. Background technique [0002] As a new material, photocatalyst is widely used in industry, agriculture and medical and health fields. Under the irradiation of light, it will produce a photocatalytic reaction similar to photosynthesis, and produce free hydroxyl groups and active oxygen with strong oxidation ability. Strong photoredox function, can oxidize and decompose various organic compounds and some inorganic substances, can destroy bacterial cell membranes and solidify virus proteins, can kill bacteria and decompose organic pollutants, and decompose organic pollutants into pollution-free water (H 2 O), carbon dioxide (CO 2 ) and other harmless substances, so it has strong functions of sterilization, deodorization, mildew resistance, antifouling, self-cleaning and a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N59/16A01P1/00B01J23/50
Inventor 陈进
Owner XIAN UNIV OF SCI & TECH
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