Copper is the third life element after iron and zinc in the human body. It is a catalyst for the oxidation process inside the cell, has an inhibitory effect on bacteria and viruses, and has been widely used in the fields of water purification, algae eradication, fungi eradication and so on. As a copper compound, copper oxide also has antibacterial effects.
Many metal ions are bactericidal and mildew resistant. The bactericidal activity of metal ions decreases in the following order: Ag>Hg>Cu>Cd>Cr>Ni>Pb>Co>Zn>Fe, due to the toxicity of Hg, Cd, Pb and Cr, in fact, the metals used as inorganic fungicides are mainly Ag, Cu and Zn. The bactericidal capacity of Cu is many times greater than that of Zn, and it is safer than Ag. Therefore, nano copper oxide antibacterial agent is a new antibacterial material which is urgently needed and has broad prospect in the market. The antibacterial process of cupric oxide can be simply described as: under the excitation of light with energy greater than the bandgap width, the generated hole-electron pair interacts with O2 and H2O in the environment, and the generated reactive oxygen species and other free radicals react chemically with organic molecules in the cell, thus decomposing the cell and achieving the purpose of antibacterial. Because CuO is a P-type semiconductor, there are holes (CuO) + in itself, which may interact with the environment and play an antibacterial or antibacterial role. The results show that nano-CuO has good antibacterial activity against pneumonia and Pseudomonas aeruginosa.
When nanometer copper oxide is added to plastics, synthetic fibers, adhesives and coatings, it can maintain high activity for a long time, even in harsh environments. In addition, when copper oxide is added to the fiber, the fiber has excellent antibacterial and antiviral effects, and can also be used to prepare antiviral gloves and filtration devices.
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Nano copper oxide antibacterial agent can be added to a variety of synthetic resins (such as PP, PE, PVC, PS, PET, ABS, etc.), a variety of coatings, a variety of adhesives, a variety of ceramics and artificial stones and synthetic fibers. Nano-copper oxide antibacterial agent added to synthetic resin or fiber, can be selected according to the specific production situation to prepare masterbatch, or nano-copper oxide antibacterial agent added to paint, adhesive, artificial stone, etc. Just add the powder preparation directly.
Post time: Jan-18-2024