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Preparation method and application of multi-functional carbonization-enriched bismuth-cobalt nanometer antibacterial agent

A bismuth carbide nano-cobalt, antibacterial agent technology, applied in the field of preparation of nano-antibacterial agents, can solve the problems of limited antibacterial activity, low specific surface area, limited visible light absorption, etc., achieve improved antibacterial effect, expand spectrum utilization range, and be recyclable rate-enhancing effect

Inactive Publication Date: 2018-12-04
NORTHWEST A & F UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that existing nitrogen-deficient graphite phase carbon nitride has fast photogenerated electron-hole recombination, limited absorption of visible light, and low specific surface area, thereby limiting its antibacterial activity under visible light, and provides a A kind of preparation method and application based on multifunctional bismuth carbide-rich cobalt nano-antibacterial agent

Method used

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  • Preparation method and application of multi-functional carbonization-enriched bismuth-cobalt nanometer antibacterial agent
  • Preparation method and application of multi-functional carbonization-enriched bismuth-cobalt nanometer antibacterial agent
  • Preparation method and application of multi-functional carbonization-enriched bismuth-cobalt nanometer antibacterial agent

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specific Embodiment approach 1

[0047] Specific embodiment one: present embodiment is a kind of preparation method based on multifunctional bismuth carbide-cobalt-rich nano-antibacterial agent, is finished according to the following steps:

[0048] 1. Preparation of g-C 3 N 4 Material:

[0049] Put urea in a covered quartz porcelain boat, then put the quartz porcelain boat into the tube furnace, and then raise the temperature of the tube furnace to 500°C at a rate of 1.5°C / min to 3°C / min in an air atmosphere ~600°C, and then kept at a temperature of 500°C~600°C and an air atmosphere for 3h~5h to obtain a yellow solid; grind the yellow solid into powder to obtain g-C 3 N 4 Material;

[0050] 2. Doping:

[0051] ①, Co(NO 3 ) 2 ·6H 2 O and Bi(NO 3 ) 3 ·5H 2 Add O into N,N-dimethylformamide, then stir and react at a stirring speed of 100r / min to 150r / min for 5min to 15min, then add terephthalic acid and triethylenediamine, and then stir at a stirring speed of Stir and react at 100r / min~150r / min for 5...

specific Embodiment approach 2

[0067]Specific embodiment two: the difference between this embodiment and specific embodiment one is: in step one, urea is placed in the quartz porcelain boat with cover, then the quartz porcelain boat is put into the tube furnace, and then the The tube furnace is heated up to 550-600°C at a heating rate of 1.5°C / min-2°C / min, and then kept at a temperature of 550°C-600°C and an air atmosphere for 3h-4h to obtain a yellow solid; The solid is ground into a powder to obtain g-C 3 N 4 Material. Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0068] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: in step one, urea is placed in the quartz porcelain boat with cover, then the quartz porcelain boat is put into the tube furnace, and then Under the air atmosphere, heat the tube furnace at a heating rate of 2°C / min~3°C / min to 500°C~550°C, and then keep it at a temperature of 500°C~550°C and an air atmosphere for 4h~5h to obtain a yellow color Solid; the yellow solid was ground to a powder to give g-C 3 N 4 Material. Other steps are the same as those in Embodiment 1 or 2.

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Abstract

The invention relates to a preparation method and application of a nanometer antibacterial agent, specifically to a preparation method and application of a multi-functional carbonization-enriched bismuth-cobalt nanometer antibacterial agent. The objective of the invention is to overcome the problem that the antibacterial activity of conventional graphitic carbon nitride with nitrogen-defects in visible light is limited since the conventional graphitic carbon nitride with nitrogen-defects is fast in the compounding of photo-induced electrons and holes, limited in visible light absorption and small in specific surface area. The preparation method comprises the following steps: the preparation of a g-C3N4 material; and 2, doping so as to obtain the multi-functional carbonization-enriched bismuth-cobalt nanometer antibacterial agent. The multi-functional carbonization-enriched bismuth-cobalt nanometer antibacterial agent is used for the elimination of Staphylococcus aureus. The multi-functional carbonization-enriched bismuth-cobalt nanometer antibacterial agent prepared in the invention shows rapid sterilization efficiency of more than 99.999% within 20 min. The invention provides thepreparation method capable of preparing the multi-functional carbonization-enriched bismuth-cobalt nanometer antibacterial agent.

Description

technical field [0001] The invention relates to a preparation method and application of a nano antibacterial agent. Background technique [0002] With the development of the global economy, the acceleration of social activities, and the continuous development of the earth by human beings, more and more harmful substances are discharged into the environment, leading to increasingly prominent problems of global environmental pollution. With the improvement of people's living standards, we pay more and more attention to the safety of food in daily life, and food safety has become a major problem that people urgently need to solve. Among them, bacterial contamination in food is a very important kind of pollution. Bacteria in the polluted environment act as pathogenic bacteria to infect food, which will bring great harm to human health, even life-threatening, and among them, Staphylococcus aureus (Staphylococcus aureus) pollution is more representative, and the Centers for Disea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N59/00A01N59/16A01P1/00
CPCA01N59/00A01N59/16
Inventor 王建龙汪蓉张道宏刘芮西乔浩辉杨程元张旭
Owner NORTHWEST A & F UNIV