Preparation method and application of carbon nanodots with efficient antibacterial properties

A technology of carbon nano-dots and characteristics, applied in the field of preparation of carbon nano-dots with high-efficiency antibacterial properties, can solve the problems of complex synthesis methods, high prices, and difficulty in popularization and use, and achieve the effect of simple preparation methods and high-efficiency photodynamic properties

Active Publication Date: 2020-10-23
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing use of photodynamic reagents to synthesize carbon nanodots is expensive, difficult to popularize and use, and the synthesis method is complicated. Therefore, the development of carbon dots with high-efficiency photodynamics will greatly promote the development of new antibacterial agents.

Method used

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  • Preparation method and application of carbon nanodots with efficient antibacterial properties
  • Preparation method and application of carbon nanodots with efficient antibacterial properties
  • Preparation method and application of carbon nanodots with efficient antibacterial properties

Examples

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Effect test

Embodiment 1

[0032] A method for preparing carbon nano-dots with high-efficiency antibacterial properties, comprising the following steps:

[0033] Select the precursor: perilla, and dry it in a drying oven at 60°C for 2 hours to completely remove the moisture. Then weigh 2g of perilla and put it into 3 reaction kettles; then weigh 25ml of absolute ethanol and put it into the above reaction kettle, set the condition at 140°C, and react for 6h to obtain carbon nanodots with high antibacterial properties. figure 1 is a transmission electron microscope (TEM) image of the carbon dots.

Embodiment 2

[0035] A method for preparing carbon nano-dots with high-efficiency antibacterial properties, comprising the following steps:

[0036] Select the precursor: honeysuckle, and dry it in a drying oven at 60°C for 2 hours to completely remove the moisture. Then weigh 4g honeysuckle and put it into the reaction kettle; then weigh 50ml of dichloromethane, put it into the above reaction kettle, set the condition at 180°C, and react for 2h to get the carbon nanodots with high antibacterial properties. The transmission electron microscope of the carbon dots Spectrum such as figure 2 shown.

Embodiment 3

[0038] A method for preparing carbon nano-dots with high-efficiency antibacterial properties, comprising the following steps:

[0039] Select the precursor: Artemisia argyi, and dry it in a drying oven at 60°C for 2 hours to completely remove the moisture. Then weigh 2g mugwort leaf and put it into the reaction kettle; then weigh 50ml of N-N dimethylformamide, put it into the above reaction kettle, set the condition at 160°C, and react for 4 hours to obtain carbon nanodots with high antibacterial properties. image 3 TEM image of carbon dots prepared from Artemisia argyi leaves as precursor.

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Abstract

The invention provides a preparation method of carbon nanodots with efficient antibacterial properties, and belongs to the technical field of carbon-based materials. The preparation method includes the following steps: placing a biomass material in a liquid medium and conducting reaction at 140-180 DEG C for 2-6 h to obtain the carbon nanodots with efficient antibacterial properties, wherein the biomass material is a natural biomaterial with antibacterial properties. The invention also provides application of the carbon nanodots prepared by the preparation method of the carbon nanodots with the efficient antibacterial properties in resisting gram-positive bacteria. The preparation method is based on cheap biomass as a precursor to synthesize the carbon nanodots by a hydrothermal method. The preparation method is simple and easy to obtain. The synthesized carbon nanodots have efficient photodynamic performance, and especially have inactivation efficiency of 99.5% of above.

Description

technical field [0001] The invention belongs to the technical field of carbon-based materials, and in particular relates to a preparation method and application of carbon nano-dots with high-efficiency antibacterial properties. Background technique [0002] Bacterial infectious diseases have posed serious challenges to human health. Since the 1990s, the proportion of Gram-positive cocci among nosocomial infection pathogens has increased significantly, and has become the most important pathogen in nosocomial infections today. Gram-positive bacteria cause serious infections worldwide, afflicting millions of people each year. In addition, surgical site infections are mainly caused by Gram-positive bacteria, accounting for 25% of nosocomial infections. At the same time, some Gram-positive bacteria in the tumor can significantly enhance chemotherapy resistance, reduce the efficacy of chemotherapy drugs, and promote tumor growth and metastasis. Considering the great threat of Gr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K41/00A61P31/04
CPCA61K41/0057A61P31/04Y02A50/30
Inventor 刘凯凯赵文博单崇新
Owner ZHENGZHOU UNIV
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