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Core-shell-structured nano-zinc oxide coated nano-copper oxide composite antibacterial agent as well as preparation method and application

A nano-copper oxide and nano-zinc oxide technology, applied in the directions of application, fungicide, botanical equipment and method, can solve the problem that the surface color of nano-copper oxide is not high enough for common bacteria to have an antibacterial rate, and achieve the effect of high inhibitory effect.

Inactive Publication Date: 2017-04-19
SHANGHAI NAT ENG RES CENT FORNANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to aim at the shortcomings of the surface color of nano-copper oxide being too dark and the antibacterial rate of common bacteria not high enough, to provide a method of coating nano-copper oxide with core-shell structure nano-zinc oxide to reduce its surface color and by combining it with Complementary to improve its preparation method for common bacteria inhibition rate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Take copper nitrate, zinc nitrate, surfactant, ammoniacal liquor and sodium carbonate (the mol ratio of copper nitrate and zinc nitrate is 1:1, the mol ratio of copper nitrate and sodium carbonate is 1:0.8, the quality of surfactant is nitric acid 1% of the mass of copper, the surfactant is sodium lauryl sulfate), first dissolve copper nitrate and sodium carbonate in water respectively, and add the surfactant to the copper nitrate solution, then drop the sodium carbonate solution on the copper nitrate In the solution, the turbid liquid after the reaction is centrifuged, washed several times with distilled water, dried in a drying oven, and then roasted at high temperature (500°C) for a certain period of time (1 hour) to obtain black nano-copper oxide. Add the nano-copper oxide into water, ultrasonically stir it to make it evenly dispersed, add zinc nitrate to dissolve it, then slowly drop ammonia water to adjust the pH to 7 to obtain a solid powder, wash it centrifugally...

Embodiment 2

[0020] Take copper nitrate, zinc nitrate, surfactant, ammoniacal liquor and sodium carbonate (the mol ratio of copper nitrate and zinc nitrate is 1:0.5, the mol ratio of copper nitrate and sodium carbonate is 1:1.5, the quality of surfactant is nitric acid 8% of the mass of copper, the surfactant is cetyltrimethylammonium bromide), firstly, copper nitrate and sodium carbonate are dissolved in water respectively, and the surfactant is added to the copper nitrate solution, and then the sodium carbonate solution Drop in copper nitrate solution, the reacted turbid solution is centrifuged, washed several times with distilled water, dried in a drying oven, and then roasted at high temperature (700°C) for a certain period of time (1.5 hours) to obtain black nano-copper oxide. Add the nano-copper oxide into water, ultrasonically stir it to make it evenly dispersed, add zinc nitrate to dissolve it, then slowly drop ammonia water to adjust the pH to 7 to obtain a solid powder, wash it ce...

Embodiment 3

[0022] Take copper nitrate, zinc nitrate, surfactant, ammoniacal liquor and sodium carbonate (the mol ratio of copper nitrate and zinc nitrate is 1:3, the mol ratio of copper nitrate and sodium carbonate is 1:3, the quality of surfactant is nitric acid 10% of the mass of copper, the surfactant is disodium lauryl sulfosuccinate monoester), first dissolve copper nitrate and sodium carbonate in water respectively, and add the surfactant to the copper nitrate solution, then add the sodium carbonate solution Drop in copper nitrate solution, the reacted turbid liquid is centrifuged, washed several times with distilled water, dried in a drying oven, and then roasted at high temperature (400°C) for a certain period of time (3 hours) to obtain black nano-copper oxide. Add the nano-copper oxide into water, ultrasonically stir it to make it evenly dispersed, add zinc nitrate to dissolve it, then slowly drop ammonia water to adjust the pH to 7 to obtain a solid powder, wash it centrifugall...

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Abstract

The invention relates to a core-shell-structured nano-zinc oxide coated nano-copper oxide composite antibacterial agent as well as a preparation method and an application. The preparation method comprises the following steps: dissolving copper nitrate and sodium carbonate in water respectively, adding a surfactant in the copper nitrate solution, then dripping the sodium carbonate solution in the copper nitrate solution, reacting and then carrying out centrifugal separation, washing, drying and roasting to obtain black nano-copper oxide; adding the nano-copper oxide in water, stirring, adding zinc nitrate and dissolving the zinc nitrate, dripping ammonia water to adjust the pH value to be about 7 and then obtaining a solid powder, and carrying out centrifugal washing, drying and calcining on the solid powder to obtain nano-zinc oxide coated nano-copper oxide. The nano-zinc oxide coated nano-copper oxide composite antibacterial agent prepared by the method disclosed by the invention has a light colour, can be used for most of household appliances, furniture, wall surfaces and other light-colour areas, and has a high inhibition effect on common bacteria and fungi due to the antibacterial complementary effect of zinc oxide and copper oxide.

Description

technical field [0001] The invention belongs to the field of nano-preparation, and in particular relates to a core-shell structure nano-zinc oxide-coated nano-copper oxide composite antibacterial agent and its preparation and application. Background technique [0002] Copper oxide is a brown-black powder, soluble in dilute acid, insoluble in water, and slowly soluble in alcohol and ammonia solution. Copper oxide has a wide range of uses, and as an important inorganic material, it is widely used in catalysis, superconductivity, ceramics and other fields. Nano copper oxide powder has superior catalytic activity, selectivity and other properties than large size copper oxide powder. The particle size of nano-copper oxide is between 1-100nm. Compared with ordinary copper oxide, it has superior properties such as surface effect, quantum size effect, volume effect and macroscopic quantum tunneling effect. , Catalyst and melting point and other aspects show singular physical and c...

Claims

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Application Information

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IPC IPC(8): A01N59/20A01N59/16A01P1/00A01P3/00
CPCA01N59/20A01N59/16A01N2300/00
Inventor 何丹农徐少洪张春明林琳张现陈超王艳丽金彩虹
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH
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