Nano Magnesium Oxide Used For Antibacterial Material

The researches show that the magnesium oxide is easy to hydration, and form a layer of magnesium hydrate. The oxygen in the solution can generate the reactive oxygen species through the reduction reaction of single electron. There is a layer of hydroxyl ion on the surface of magnesium oxide. Due to the oxygen gas has chemical stability in alkaline environment, the reactive oxygen species with high concentration can exist on the magnesium oxide surface. And the reactive oxygen species has strong oxidability, it can destroy the peptide bond structure of the cell walls of the bacteria. Therefore, it can kill bacteria swiftly. In addition, the nano magnesia particle can produce destructive adsorption, and also can damage the cell walls of the bacteria. This kind of antibacterial mechanism can overcome the defects: ag-type antibacterial agent is slow and easy to discolor. ZnO-TiO2 antibacterial agent need the ultraviolet irradiation. At present, there are two ways to exploit magnesium oxide antibacterial material: In the first place, in order to improve the mold resistance of nano magnesium oxide, it should controlling the particle size and morphology features. For example, the scientist has already succeed in researching and developing a kind of flaky nano magneisum oxide powder. It expresses powerful antibacterial, antiseptic properties for the anthrax, staphylococcus, escherichia coli and others. In the second place, exploiting the novel compound through recombining the magnesium oxide and other antibacterial materials. There are some main antibacterial materials: activated carbon and magnesium oxide, metallic oxide, magnesium oxide and chlorine, bromine gas and magnesium oxide, etc. The nano magnesia powder were distributed evenly on the activated carbon matrix. For the staphylococcus aureus, it has excellent antibacterial property. The chlorine and bromine gas in the halogen element is strong bactericide. However, the high vapor pressure with poison can't be used alone. It can form a stable gas system of magnesium oxide and halogen element through using the magnesia's strong adsorption. Thus, we can use it safely and efficiently. In the aspect of metallic oxide recombination and antibacterial agent, the magnesium oxide and titanium dioxide composite powder can be prepared by codeposition method, and then, researching its antibacterial mechanism. Under the UV-light, the titanium dioxide can generate electrons and holes by photocatalysis. However, it is easy to composite, and loose photocatalysis and mold resistance. On the surface of electronic shell, magnesia exists the blemish, and can accept electron and hole. Therefore, it inhibits the recombination between electron and hole, increase the photocatalytic efficiency and improve the mold resistance. In the production practice, the nano magnesium oxide plays an important role in developing many antibacterial materials, such as the antibacterial ceramics, antibacterial plastics and so on. Hebei Meishen Technology Co., Ltd is the professional magnesium oxide supplier and manufacturer.