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Rapid preparation method of boron nitride/carbon nitride/silver monatomic antibacterial agent

A technology of carbon nitride and boron nitride, which is applied in the field of nanomaterial preparation, can solve the problem of low efficiency in killing bacteria and viruses, and achieve the effects of high antibacterial and antiviral efficiency, simple operation, and improved antibacterial performance

Inactive Publication Date: 2021-12-21
上海腾灵建设集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: the problem that the existing silver antibacterial agent is not efficient in killing bacteria and viruses quickly

Method used

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  • Rapid preparation method of boron nitride/carbon nitride/silver monatomic antibacterial agent
  • Rapid preparation method of boron nitride/carbon nitride/silver monatomic antibacterial agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Accurately weigh the nitrogen source, boron source, and carbon sources (nitrogen source is melamine; boron source is boric acid; carbon source is chitosan; the mass ratio of nitrogen source and boron sources is 1: 1; nitrogen source and carbon source mass ratio In a 1: 0.5), first put it into a beaker and add a solvent (the solvent is water; the mass ratio of the nitrogen source and the solvent is 1: 100) makes it fully dissolved, then add it to the supercritical reactor, and passed The high pressure pump is inserted into the carbon dioxide gas, and the pressure is maintained at a certain temperature (40 ° C) and a certain pressure (100 bar) for a certain amount of time (12h); after the reaction is completely stressed by ultrafine nozzles, through the RESS (supercritical fluid fast expansion) The method was prepared by the boron nitride / carbon nitride heterojunction precursor. After drying it, put it into the ceramic crucible and cover the cover, and then heat (the temper...

Embodiment 2

[0024] Accurately weigh the nitrogen source, boron source, and carbon source (nitrogen source is urea; boron source is borax; carbon source is sucrose; the mass ratio of nitrogen source and boron source is 1: 0.2; nitrogen source and carbon source mass ratio 1 : 2), first put it into a beaker and add a solvent (solvent is ethanol; the mass ratio of nitrogen source and solvent is 1: 200), which is sufficiently dissolved, then add it to the supercritical reactor, and passes through the high pressure pump The carbon dioxide gas is introduced, and the pressure is maintained at a certain temperature (60 ° C) and a certain pressure (200 bar). After a certain amount of pressure (5h); after the reaction is completed, the pressure is quickly charged by ultrafine nozzles, through the RESS (supercritical fluid fast expansion) method. The boron nitride / carbon nitride heterojunction precursor was prepared. After drying it, placed in a ceramic crucible and covered a cover, and then heat (heat...

Embodiment 3

[0026] Accurately weigh the nitrogen source, boron source, and carbon sources (nitrogen source is monanlam; boron source is sodium borate; the carbon source is a phenolic resin; the mass ratio of nitrogen source and boron is 1: 1; nitrogen source and carbon source The mass ratio is 1: 0.5), first put it into the beaker and add solvent (solvent is propionate; the mass ratio of nitrogen source and solvent is 1: 500) make it fully dissolved, then add it to supercritical reactor In the middle, and the carbon dioxide gas is introduced by the high pressure pump, and the pressure is maintained at a certain temperature (80 ° C) and a certain pressure (150 bar); 56h); after the reaction is completed, quickly vent pressure through the ultrafine nozzle, through RESS (super Rapid expansion of critical fluids) A boron nitride / carbon nitride heterojunction precursor was prepared. After drying it, placed in a ceramic crucible and covered a cover, and then heat (temperature rate of 3 ° C / min)...

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Abstract

The invention discloses a rapid preparation method of a boron nitride / carbon nitride / silver monatomic antibacterial agent. The method is characterized by comprising the following steps: fully dissolving a nitrogen source, a boron source and a carbon source in a solvent, then putting into a supercritical reaction kettle, introducing carbon dioxide gas, and preparing a boron nitride / carbon nitride heterojunction precursor through a supercritical fluid rapid expansion method; drying, putting into a ceramic crucible, putting into a muffle furnace, heating, preserving heat, roasting, and naturally cooling to obtain a two-dimensional boron nitride / carbon nitride nano heterojunction; then grinding and crushing, adding ionized water, adding a silver salt, and reacting under the irradiation of a xenon lamp under a stirring condition; and filtering, washing and drying to obtain the boron nitride / carbon nitride / silver monatomic catalytic antibacterial agent. The boron nitride / carbon nitride / silver monatomic efficient catalytic antibacterial agent prepared by the method provided by the invention is high in antibacterial and antiviral efficiency, simple to operate, low in preparation difficulty and suitable for large-scale production.

Description

Technical field [0001] The present invention relates to a rapid preparation method of boron nitride / carbon nitride / silver single atomic antibacterial agent, belonging to the technical field of preparation of nanomaterials. Background technique [0002] Metal silver can take a specific binding of a negatively charged thiol group (-SH) in the protease, effectively pierce the cell wall and the cell membrane skin, so that bacterial cells are denatured by protein, and cannot breathe, metabolize and reproduce until death. Therefore, silver products can be generally killed most of the bacteria, fungi, and viruses. However, although its performance is good for viruses and bacteria, its performance can still not meet the needs of rapid killing bacterial viruses. [0003] Carbon nitride is a kind of graphene two-dimensional nanomaterial, which can exhibit better bacteriostatic properties in visible light irradiation, and it can be constructed as Schottky heterogeneity with silver nanop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N59/14A01N59/16A01N59/00A01P1/00
CPCA01N59/14A01N59/16A01N59/00
Inventor 邓细贵
Owner 上海腾灵建设集团有限公司
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