Cuprous sulfide nano antibacterial agent, preparation method and application thereof

Abstract

The invention discloses a cuprous sulfide nano antibacterial agent, a preparation method and application thereof. The preparation method comprises the following steps: carrying out first contact reaction on copper nanoparticles and an etching agent to prepare the cuprous sulfide nano antibacterial agent, wherein the average particle size of the copper nanoparticles is 2-6 nm, the valence state of the copper element in the copper nanoparticles contains positive bivalence, and the etching agent is selected from at least one of reduced glutathione, cysteine and serine. According to the invention, the cuprous sulfide nano antibacterial agent has excellent antibacterial performance and dye degradation performance, and the preparation method has the advantages of being simple in process and easy and convenient to operate, so that the antibacterial agent can be widely applied to the antibacterial field and the dye degradation field.

Description

technical field [0001] The invention relates to copper nanoparticles, in particular to a cuprous sulfide nano antibacterial agent and its preparation method and application. Background technique [0002] Bacterial infection has become a major threat to human health, even leading to the death of more and more developing countries and underdeveloped regions, so the demand for antibacterial materials is even more urgent. In recent years, due to the widespread use of antibiotics, the problem of bacterial infection has indeed been suppressed to a certain extent, but at the same time, another new problem has emerged, that is, many drug-resistant superbugs have emerged. The so-called superbugs are more harmful. For example, the number of deaths caused by "super bacteria" in the United States can reach 18,000 cases per year, exceeding the 16,000 people who died of AIDS in the United States in 2005; in the past two years, 313 people in France have had VRE urinary tract or digestive ...

AI Technical Summary

Problems solved by technology

The solid-phase method is to change the particles with larger particle size into smaller particles through ball milling through physical methods. Although the solid-phase method can mass-produce products, the obtained particle size is relatively large, and impurities are inevitably introduced. , the particle size distribution of the prepared nanoparticles is uneven; compared with the solid phase method, the product prepared by the gas phase method has higher purity and narrow particle size distribution, but the requirements for equipment are higher

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