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Preparation method and application of nano copper-zinc compound antibacterial material

A composite antibacterial and nano-copper technology, applied in the field of environmental engineering, can solve the problems of incapable of high bactericidal effect, unsatisfactory bactericidal effect, single metal particles, etc., and achieves the effects of long antibacterial cycle, good antibacterial performance and simple preparation method.

Active Publication Date: 2017-09-01
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the metal particles of nano-metal composites are single, and the bactericidal efficiency is low, and it cannot achieve a high bactericidal effect at a low dosage. When used in the cooling water system, the cost is high and the bactericidal effect is not ideal.

Method used

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  • Preparation method and application of nano copper-zinc compound antibacterial material
  • Preparation method and application of nano copper-zinc compound antibacterial material
  • Preparation method and application of nano copper-zinc compound antibacterial material

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preparation example Construction

[0033] An embodiment of the present invention provides a method for preparing a nano-copper-zinc composite antibacterial material, which specifically includes the following steps:

[0034] S1: Dissolve the zinc salt and copper salt in water to form a copper-zinc solution, add an equal volume of absolute ethanol to the copper-zinc solution, and perform ultrasonic treatment to obtain solution I.

[0035] In this step, water-soluble zinc salt and copper salt are selected to form a copper-zinc mixed solution, and then a polar solvent is added to dissolve, which is beneficial to the high dispersion of copper-zinc in the solvent and prepares for the next complexation reaction.

[0036] S2: Adjust the pH of solution I to 5.5-6.7, add citric acid monohydrate, stir, and sonicate until there is no flocculation in the solution to obtain solution II.

[0037] In this step, citric acid monohydrate is selected as a complexing agent, which can effectively complex zinc ions and copper ions, s...

Embodiment 1

[0056] Preparation of nano-copper-zinc composite antibacterial material:

[0057] Dissolve 0.35mol of zinc acetate and 0.15mol of copper acetate in 500ml of water to form a copper-zinc solution, add 50ml of absolute ethanol, and sonicate for 0.5h to obtain solution I;

[0058] Adjust the pH of solution I to 6.0, add 0.6 mol of citric acid monohydrate, stir, 40kHz ultrasonic treatment for 0.75h until there is no flocculation in the solution, and obtain solution II;

[0059] Heat the solution II in an 80°C water bath, stir, and centrifuge to obtain a precipitate. The precipitate is washed with absolute ethanol for 3-5 times and then dried in an oven at 80°C for 24-48h. After drying, it is ground into a powder, and the powder is calcined in a muffle furnace at 500°C for 2h. Cooling to obtain copper-zinc complex;

[0060] Mix 0.85g of copper-zinc complex and 0.15g of graphene in 80ml of N,N-dimethylacetamide solution, and ultrasonically treat it for 6 hours to obtain solution III...

Embodiment 2

[0065] Preparation of nano-copper-zinc composite antibacterial material:

[0066] Dissolve 0.67mol of zinc acetate and 0.33mol of copper acetate in 750ml of water to form a copper-zinc solution, add 75ml of absolute ethanol, and sonicate for 0.2h to obtain solution I;

[0067] Adjust the pH of solution I to 5.5, add 1 mol of citric acid monohydrate, stir, 30kHz ultrasonic treatment for 0.5h until there is no flocculation in the solution, and obtain solution II;

[0068] Heat the solution II in a 70°C water bath, stir, and centrifuge to obtain a precipitate. The precipitate is washed with absolute ethanol for 3-5 times and then dried in an oven at 80°C for 24-48h. After drying, it is ground into a powder, and the powder is calcined in a muffle furnace at 480°C for 3h. Cooling to obtain copper-zinc complex;

[0069] Mix 0.6g of copper-zinc complex and 0.2g of graphene in 40ml of N,N-dimethylacetamide solution, and ultrasonically treat for 5h to obtain solution III;

[0070] Th...

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Abstract

The invention provides a preparation method and application of a nano copper-zinc compound antibacterial material, belongs to the field of environment engineering and particularly relates to the field of antibacterial materials. The prepared nano copper-zinc compound antibacterial material has a good sterilizing effect and can be used for preparing antibacterial paint. The preparation method of the nano copper-zinc compound antibacterial material specially comprises the following steps of dissolving zinc salt and copper salt into water to form a copper-zinc solution, adding absolute ethyl alcohol of the same volume as the copper-zinc solution and performing ultrasonic treatment to obtain a solution I; adjusting pH of the solution I as 5.5 to 6.7, adding citric acid monohydrate, stirring and performing ultrasonic treatment until the solution has no flocculation to obtain a solution II; heating the solution II in a water bath mode, stirring, centrifuging to obtain precipitation, washing the precipitation, drying, roasting and cooling to obtain copper-zinc complex; mixing the copper-zinc complex with graphene in an N,N-dimethylacetamide solution and performing ultrasonic treatment to obtain a solution III; centrifuging the solution III to obtain precipitation, washing the precipitation and drying to obtain the nano copper-zinc compound antibacterial matearil.

Description

technical field [0001] The invention relates to the field of environmental engineering, in particular to an antibacterial material, in particular to a preparation method and application of a nanometer copper-zinc composite antibacterial material. Background technique [0002] Industrial circulating cooling water has the characteristics of suitable temperature (30-40°C) and high dissolved oxygen content, which can easily cause microorganisms to multiply in the cooling water system, resulting in deterioration of water quality and formation of biological slime, resulting in a decrease in heat transfer efficiency, Corrosion of pipelines, increased energy consumption of water pipelines, blockage of cooling equipment and water pipelines, etc., threaten the normal operation of industrial enterprises. [0003] In order to control microbial corrosion and the formation of biological slime, the commonly used method is chemical antibacterial technology, that is, chemical antibacterial a...

Claims

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Application Information

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IPC IPC(8): A01N59/20A01N59/16A01N59/00A01P1/00C09D5/14C09D175/04C02F1/50
CPCA01N59/00A01N59/16A01N59/20C02F1/50C08K3/04C08K5/098C08K2201/011C09D5/14C09D175/04A01N2300/00
Inventor 刘芳姜国飞赵朝成李旭飞王永强刘春爽孙娟戴业欣柴晴雯
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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