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.
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[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 zinc salt and copper salt in water to form a copper-zinc solution, add the same volume of absolute ethanol as 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 it, which facilitates the high dispersion of copper and 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 the complexing agent, which can effectively complex zinc ions and copper ions, thereby ma...
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[0055] Example 1
[0056] Preparation of nano-copper-zinc composite antibacterial material:
[0057] Dissolve 0.35 mol of zinc acetate and 0.15 mol of copper acetate in 500 ml of water to form a copper-zinc solution, add 50 ml of absolute ethanol, and ultrasonicate for 0.5 h to obtain solution I;
[0058] Adjust the pH of solution I to 6.0, add 0.6 mol of citric acid monohydrate, stir, and ultrasonic treatment at 40 kHz for 0.75 h until there is no flocculation in the solution to obtain solution II;
[0059] The solution II was heated in a water bath at 80°C, stirred, and centrifuged to obtain a precipitate. The precipitate was washed 3-5 times with absolute ethanol and dried in an oven at 80°C for 24-48h. After drying, it was ground into a powder. The powder was calcined in a muffle furnace at 500°C for 2h. Cool to obtain copper-zinc complex;
[0060] Take 0.85g of copper-zinc complex and 0.15g of graphene and mix them in 80ml of N,N-dimethylacetamide solution, and ultrasonically trea...
Example Embodiment
[0064] Example 2
[0065] Preparation of nano-copper-zinc composite antibacterial material:
[0066] Dissolve 0.67 mol of zinc acetate and 0.33 mol of copper acetate in 750 ml of water to form a copper-zinc solution, add 75 ml of absolute ethanol, and ultrasonicate for 0.2 h to obtain solution I;
[0067] Adjust the pH of the 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 to obtain solution Ⅱ;
[0068] The solution II was heated in a 70℃ water bath, stirred, and centrifuged to obtain a precipitate. The precipitate was washed 3-5 times with absolute ethanol and dried in an oven at 80℃ for 24-48h. After drying, it was ground into a powder. The powder was calcined in a muffle furnace at 480℃ for 3h. Cool to obtain copper-zinc complex;
[0069] Take 0.6g of copper-zinc complex and 0.2g of graphene and mix it in 40ml of N,N-dimethylacetamide solution, and ultrasonicate for 5h to obtain solutio...
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