A kind of preparation method of carbon nitrogen boron nano sheet light antibacterial material

An antibacterial material and nanosheet technology, applied in the field of photobacteria, can solve the problems of expensive and complex precious metals, and achieve the effects of high surface potential, less layer stacking, and enhanced capture ability

Active Publication Date: 2018-11-27
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, precious metals are more expensive, and the operation of improving the antibacterial ability of nitrogen carbide by combining multiple materials is more complicated, and the method of improving the antibacterial activity of materials through non-metallic doping and changes in material morphology has not yet been reported.

Method used

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  • A kind of preparation method of carbon nitrogen boron nano sheet light antibacterial material

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Embodiment 1

[0020] A preparation method of carbon nitrogen boron nanosheet light antibacterial material, specifically comprising the following steps:

[0021] (1) Preparation of the precursor: 0.05 g of 3-aminophenylboronic acid was added to 4 g of cyanamide solution (50%, w / w). After ultrasonic dissolution, 8 g of silica microsphere sol was added dropwise while stirring ( 40%, w / w) as a template, evaporate to dryness at 60°C, then take it out and grind it evenly;

[0022] (2) Calcination of the precursor: put the precursor prepared in step (1) in a muffle furnace, control the temperature rise rate to 4.5°C / min, raise it from room temperature to 400°C, keep it warm for 4 hours, and then cool it down naturally. Take out and grind evenly;

[0023] (3) Removal of the template: Add the uniformly ground material in step (2) to 75mL of 4mol / L ammonium bifluoride solution, shake for 48h, centrifuge at 12000rpm for 15min, remove the supernatant, and then transfer the bottom sediment to the dialy...

Embodiment 2

[0026] A preparation method of carbon nitrogen boron nanosheet light antibacterial material, specifically comprising the following steps:

[0027] (1) Preparation of precursor: Add 1 g of boric acid to 4 g of dicyandiamide solution (50%, w / w), after ultrasonic dissolution, add 8 g of silica microsphere sol (40%, w / w) dropwise while stirring ) as a template, evaporate to dryness at 60°C, then take it out and grind it evenly;

[0028] (2) Calcination of the precursor: place the precursor prepared in step (1) in a muffle furnace, control the temperature rise rate to 4.5°C / min, raise it from room temperature to 600°C, keep it warm for 4 hours, and then cool it down naturally. Take out and grind evenly;

[0029] (3) Removal of the template: Add the homogeneously ground material in step (2) to 75mL of 4mol / L ammonium bifluoride solution, shake for 48h, centrifuge at 10,000rpm for 15min, remove the supernatant, and transfer the bottom sediment to the dialysis belt (3500Da) dialysis...

Embodiment 3

[0032] A preparation method of carbon nitrogen boron nanosheet light antibacterial material, specifically comprising the following steps:

[0033] (1) Preparation of precursor: Add 0.01 g of 3-aminophenylboronic acid to 4 g of cyanamide solution (50%, w / w). After ultrasonic dissolution, add 8 g of alumina nanoparticles as a template while stirring, steam at 60 °C dry, then take out and grind evenly;

[0034] (2) Calcination of the precursor: put the precursor prepared in step (1) in a muffle furnace, control the temperature rise rate at 10°C / min, raise it from room temperature to 1000°C, keep it warm for 4 hours, and then cool it down naturally. Take out and grind evenly;

[0035] (3) Removal of the template: Add the homogeneously ground material in step (2) into 100 mL of 5mol / L hydrochloric acid solution, shake for 48 hours, centrifuge at 12,000 rpm for 15 minutes, remove the supernatant, and transfer the bottom sediment to the dialysis belt (3500Da) dialysis to remove imp...

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Abstract

The invention discloses a preparation method of a carbon-nitrogen-boron nanosheet optical antibacterial material. The preparation method comprises the following specific steps: (1) preparing a precursor: adding a boron source into a nitrogen source solution, performing ultrasonic dissolution, adding silicon dioxide microsphere sol or aluminum oxide nanoparticle as a template, drying by distillation, then taking out and uniformly grinding; (2) calcining the precursor: putting the precursor prepared in the step (1) into a muffle furnace, calcining, then cooling, taking out and uniformly grinding; (3) removing the template: adding the material uniformly ground in the step (2) into a hydrogen fluoride solution or a hydrochloric acid solution, shaking and purifying to obtain the carbon-nitrogen-boron nanosheet optical antibacterial material. The carbon-nitrogen-boron nanosheet optical antibacterial material prepared by the preparation method provided by the invention adopts a lamellar structure, has less layer accumulation, relatively high surface potential and relatively high stability, and can still maintain an antibacterial effect after high-temperature and high-pressure treatment; the carbon-nitrogen-boron nanosheet optical antibacterial material has significantly enhanced visible light capturing capability, and can generate a significant antibacterial effect on escherichia coli in visible light without the need of being compounded with other compounds.

Description

technical field [0001] The invention belongs to the field of light antibacterial, and in particular relates to a preparation method of a carbon nitrogen boron nanosheet light antibacterial material. Background technique [0002] Infectious disease caused by bacteria is inevitable in modern medicine and remains a major health problem worldwide. Therefore, antibiotics play a huge role in daily life, especially antibacterial effect. However, the abuse of antibiotics has also led to some new problems, such as the failure of antibiotics, the enhancement of bacterial resistance, and the emergence of superbugs. In recent years, the research and development of antibacterial nanomaterials has provided a new antibacterial approach. Its principle of action is different from that of traditional antibiotics. It does not only act on the metabolic process of bacteria, but directly kills bacteria by generating free radicals, reducing The possibility of bacterial genetic variation leading ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/907B82Y40/00A01N59/14A01N25/08A01N25/10A01N25/34A01P1/00
CPCA01N25/08A01N25/10A01N25/34A01N59/14B82Y40/00
Inventor 郭良洽林天然
Owner FUZHOU UNIV
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