In recent years,nano-copper powder and nano-technology have developed rapidly with their unique advantages. Nano-copper powder antibacterial material is a new type of functional material developed on the basis of nanometer materials and antibacterial materials. It has gradually become a research hotspot in the field of nanotechnology and antibacterial technology. It mainly includes the physical and chemical properties of nanometer copper powder antibacterial materials and nanometer copper powder antibacterial materials. Material preparation technology (nano copper powder antibacterial powder, nano copper powder antibacterial film, etc.), nano copper powder antibacterial material testing and nano copper powder antibacterial new material development and application.
Chen Dan et al. measured the minimum inhibitory concentration (MIC) of nano-copper particles with a micro broth dilution culture method. The smaller the particle size of the nano-copper particles, the stronger its antibacterial performance. The synthesized nano-copper particles have a minimum inhibitory concentration of 750Mg. /L~3000Mg/L. Tao Tingxian et al. prepared nano-copper/polyacrylonitrile fiber by coordination-reduction method using modified polyacrylonitrile as the matrix, and tested its antibacterial properties against Escherichia coli, Staphylococcus aureus, Bacillus subtilis, and Streptococcus albicans , And compared with the non-copper polyacrylonitrile fiber, the results show that the nano-copper/polyacrylonitrile has fast antibacterial speed and high efficiency against Gram-negative bacteria. Chen Junhua and others used the sol-gel method to introduce copper and silver into the hexagonal mesoporous silica (HMS) of the carrier in situ to obtain a new inorganic antibacterial agent Cu/Ag-HMS with good thermal stability and orderly mesoporous structure. It has a good antibacterial effect on Bacillus subtilis and Bacillus, and has a long-lasting and stable antibacterial effect on Gram-positive bacteria.
The prepared nano-copper powder material is supported on nano-materials such as oxides to further reduce costs and expand the application range, such as antibacterial coatings or antibacterial ceramics. Surface modification of nano-copper powder with silane coupling agent improves the compatibility of nano-copper powder with organic media, and prepares antibacterial polymer-based nanocomposite fiber
With the development of technology and market demand, more nano-copper powder antibacterial materials will achieve industrial production and market applications.