Magnesium oxide as a kind of chemical material additive, it starts from magnesium oxide and ends up in magnesium oxide, no chemical structure change, theoretically will not cause artificial changes to the ecology, in line with the new trend of today\’s world industrial development pay attention to environmental protection. Therefore, magnesium oxide industry in the twenty-first century is a sustainable development of the \”sunrise industry\”. Medical industry as a branch of magnesium oxide in the application of high-end magnesium oxide as a series of magnesium oxide products to take over, will gradually replace the ordinary magnesium oxide, play its significant antibacterial role, has a good market prospects. In the next few years, the demand of nano magnesium oxide in China will grow about 20% annually.
With the destruction of human survival environment, new types of bacteria and germs are emerging, human beings urgently need a new type of efficient antibacterial materials, nano magnesium oxide in the field of antibacterial shows a unique advantage. With the advantages of low toxicity, high heat resistance, environmental friendly, durable and broad-spectrum antibacterial, magnesium oxide nanoparticles can overcome the problems of high cost, easy discoloration, poor stability and biological toxicity of silver-based antibacterial materials, and can also make up for the low antibacterial efficiency and dependence on UV light of photocatalytic type antibacterial materials, which has become a hot spot for current research in the field of antibacterial materials.
Nano magnesium oxide as a new type of multifunctional inorganic antibacterial material new favorite, in many fields has a broad application prospect, first of all magnesium oxide is extremely easy to hydrate, and also can form a layer of magnesium hydroxide on the surface, dissolved in the solution of oxygen through the single electron reduction reaction to generate reactive oxygen ions, the surface of magnesium oxide coated with a layer of hydroxide ions, due to the oxygen in the alkaline environment from a chemical stability, so the high concentration of Active oxygen ion, can exist on the surface of magnesium oxide, and active oxygen ion has strong oxidation, can destroy the peptide bond structure of the cell membrane wall of bacteria thus quickly kill bacteria.
According to the current properties of magnesium oxide, there are two main paths for the development of its antibacterial materials.
One is to improve the antibacterial properties of magnesium oxide nanoparticles by controlling the size of particle size, morphological characteristics, etc. For example, a scale-like magnesium oxide nanoparticle shows extremely strong antibacterial bactericidal ability against anthrax fever, staphylococcus, E. coli, etc.
In addition, new composite antibacterial materials are developed by compounding magnesium oxide and other antibacterial materials, mainly activated carbon/magnesium oxide, metal oxide, magnesium oxide and chlorine, bromine gas/magnesium oxide, etc. The nano-magnesium oxide powder is uniformly dispersed on the activated carbon collectively, which has good antibacterial property for Staphylococcus aureus, and can be used to form a stable gas system of magnesium oxide/halide elements by using the surface of magnesium oxide to strengthen its surface adsorption, which can ensure the safe and efficient use.