Zinc oxide/metal antibacterial powder and preparation method thereof

Abstract

The invention relates to the technical field of antibacterial powder, and discloses a zinc oxide/metal antibacterial powder preparation method, which comprises: preparing a zinc salt aqueous solution with a concentration of 0.1-2 mol/L, (2) preparing an alkali metal hydroxide aqueous solution with a concentration of 0.1-4 mol/L, (3) adding a superfine metal core into the zinc salt aqueous solution, and heating to a temperature of 60-90 DEG C; (4) adding a certain amount of the hydroxide aqueous solution, so that the molar ratio of the hydroxide to the zinc salt in the mixed solution is 1: 2-1: 4; and (5) stirring for 20-180 minutes, filtering and drying to obtain the zinc oxide/metal antibacterial powder. The invention also discloses a microstructure of the zinc oxide/metal antibacterial powder prepared by the method. Through the low-temperature preparation method, the nano zinc oxide forms a semiconductor-metal interface, and the antibacterial performance is improved.

Description

technical field [0001] The invention relates to the technical field of antibacterial powder, in particular to a zinc oxide / metal antibacterial powder and a preparation method thereof. Background technique [0002] As a new type of environmentally friendly multifunctional material, nano-zinc oxide has excellent properties in magnetic, optical, electrical, sensitive, antibacterial disinfection, ultraviolet shielding and so on. [0003] It is non-toxic, odorless, non-irritating to the skin, and has good thermal stability. It is a topical drug for the skin, and can also be used as a sunscreen in cosmetics to prevent UV damage and antibacterial and deodorizing. It can be used to produce deodorant, antibacterial, antibacterial Ultraviolet fibers are used to make surgical gowns, nurses' clothes, underwear, outerwear, shoes, hats, socks, etc., and can also be added to organic materials such as coatings to make antibacterial boards, coatings, etc. [0004] At present, doping or modi...

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Problems solved by technology

[0008] Chinese invention patent (publication number CN112573560A) discloses a preparation method of highly dispersed zinc oxide, which is carried out in four steps. -methylene)-2,4,6-trimethylbenzene and 5-(1-tetrazole)isophthalic acid, and then calcined at high temperature, the process is complicated and the cost is high

[0009] Chinese invention patent (publication number CN112777627A) discloses a method for preparing nano-zinc oxide, which uses a V-shaped microchannel reactor to prepare zinc hydroxide and then dries and calcines it. The output is limited and the energy consumption is high.

[0010] Chinese invention patent (publication number CN112266010A) discloses a zinc oxide production process, including the following steps: crushing zinc ingots to obtain zinc lumps, grinding the zinc lumps, heating and stirring the zinc powder, and pouring the zinc powder into the high-temperature zinc powder Add deionized water, then add sulfuric acid to the zinc powder aqueous solution to obtain zinc sulfate, dry the zinc sulfate and add it to the container, and add sodium carbonate to the container to react to obtain zinc carbonate, wash the zinc carbonate with water, and then Carry out drying treatment and calcining at 400°C. During the calcining process, beating is performed to obtain zinc oxide, ball milling, and finally zinc oxide is obtained. The process is more complicated, requires high temperature treatment, and consumes more energy.

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