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Preparation method of visible light excitation antibacterial coating layer containing nano cuprous oxide

A nano-cuprous oxide, antibacterial coating technology, applied in the fields of botanical equipment and methods, preservation of human or animal bodies, chemicals for biological control, etc., can solve problems such as eye hazards in the central nervous system, and achieve Efficient bactericidal properties and enhanced antibacterial properties

Inactive Publication Date: 2016-06-15
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the wide band gap (3.2ev) makes TiO2 only play a bactericidal effect under the action of ultraviolet rays, and the proportion of ultraviolet rays in sunlight is less than 5%, and ultraviolet rays are harmful to human skin, central nervous system, Eyes, etc. have certain hazards

Method used

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  • Preparation method of visible light excitation antibacterial coating layer containing nano cuprous oxide
  • Preparation method of visible light excitation antibacterial coating layer containing nano cuprous oxide
  • Preparation method of visible light excitation antibacterial coating layer containing nano cuprous oxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Preparation of nano Cu2O (cuprous oxide):

[0047] (a) Dissolve 2mmol CuSO4·5H2O and 1mmol EDTA (ethylenediaminetetraacetic acid) in 30mL deionized water, and stir for 30min;

[0048] (b) Heat the solution prepared in step a to 55°C, and add 25mL of 0.6M NaOH solution;

[0049] (c) After 5 minutes, add 0.5 g of C6H6O2 (1,4-hydroquinone) to the solution prepared in step b, and continue stirring for 1 hour;

[0050] (d) After the reaction in step c, the solution was naturally cooled to room temperature, and then the precipitate was centrifuged (8000rpm, 5min), washed with deionized water and absolute ethanol, and then dried to obtain nano Cu2O.

Embodiment 2

[0052] Preparation of Nanometer Cu2O-Ag

[0053] (a) Dissolve 2mmol CuSO4·5H2O, 1mmol EDTA (ethylenediaminetetraacetic acid) and AgNO3 (the molar ratio of Ag+ to Cu2+ is 1%-100%) in 30mL deionized water, and stir for 30min;

[0054] (b) Heat the solution prepared in step a to 55°C, and add 25mL of 0.6M NaOH solution;

[0055] (c) After 5 minutes, add 0.5 g of C6H6O2 (1,4-hydroquinone) to the solution prepared in step b, and continue stirring for 1 hour;

[0056] (d) After the reaction in step c, the solution was naturally cooled to room temperature, and then the precipitate was centrifuged (8000rpm, 5min), washed with deionized water and absolute ethanol, and then dried to obtain nano Cu2O-Ag.

Embodiment 3

[0058] Preparation of Nanometer Cu2O-ZnO

[0059] (a) Dissolve 2mmol CuSO4·5H2O, 1mmol EDTA (ethylenediaminetetraacetic acid) and Zn(CH3COO)2 (the molar ratio of Zn+ to Cu2+ is 1%-100%) in 30mL deionized water, and stir for 30min;

[0060] (b) Heat the solution prepared in step a to 55°C, and add 25mL of NH3·H2O solution;

[0061] (c) After 5 minutes, add 0.5 g of C6H6O2 (1,4-hydroquinone) to the solution prepared in step b, and continue stirring for 1 hour;

[0062] (d) After the reaction in step c, the solution was naturally cooled to room temperature, and then the precipitate was centrifuged (8000rpm, 5min), washed with deionized water and absolute ethanol, and then dried to obtain nano Cu2O-ZnO.

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Abstract

The invention discloses a preparation method of a visible light excitation antibacterial coating layer containing nano cuprous oxide, a p-type semiconductor material-Cu2O with narrower energy gap is used as a basic antibacterial material, and for enhancing the antibacterial property, different contents of Ag or ZnO nanoparticles are doped; the Ag or ZnO nanoparticles are uniformly loaded on the surface of a non-woven fabric or a PET film or a toughened film or other materials by a solution method, a magnetron injection method and the like; under visible light catalysis, the high-efficiency bactericidal property can be realized; the preparation method is different from traditional ultraviolet sterilization, and is more convenient, healthy and environmentally friendly.

Description

technical field [0001] The invention relates to the field of functional nanomaterials, in particular to a method for preparing a visible light-activated antibacterial coating containing nano-cuprous oxide. Background technique [0002] Harmful bacteria have always been the main factor threatening human health, and with the abuse of antibiotics, new variants appear and bacterial resistance increases, further exacerbating its harm. In 2011, the Ministry of Health of China stated that in China, the use rate of antibiotics among patients was as high as 70%, twice that of European and American countries, but less than 20% actually needed to use them. The irrational use of antibiotics has exacerbated the emergence of bacterial resistance. Drug resistance is currently one of the most pressing public health problems in the world, and the situation in my country is particularly severe. According to a British study, if there is no way to deal with drug-resistant bacteria, by 2050, 1...

Claims

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Application Information

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IPC IPC(8): A01N59/20A01N59/16A01P1/00D06M11/42D06M11/44
CPCA01N59/16A01N59/20D06M11/42D06M11/44A01N2300/00
Inventor 王小磊辛洪波史晓彤薛超文项卓宋相味
Owner NANCHANG UNIV
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