As an additive of chemical materials, magnesium oxide starts from magnesium oxide and ends with magnesium oxide. It has no chemical structure change and will not cause artificial changes to the ecology in theory. It is in line with the new trend of environmental protection in today’s world industrial development. Therefore, the magnesium oxide industry is a sustainable “sunrise industry” in the 21st century.
As a branch of the application of magnesium oxide in the medical industry, high-end nano magnesium oxide will be used as the successor of magnesium oxide series products, which will gradually replace ordinary magnesium oxide, exert its important antibacterial effect, and have a good market prospect. In the next few years, the demand for nano-magnesia in China will increase by about 20% annually.
With the destruction of the human living environment, new bacteria and germs emerge in an endless stream. Human beings urgently need a new type of high-efficiency antibacterial material. Nano-magnesium oxide has shown unique advantages in the field of antibacterial. Nano-magnesium oxide has the advantages of low toxicity, high heat resistance, environmental friendliness, long-lasting and broad-spectrum antibacterial, which 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 photocatalytic type. Antibacterial materials have low antibacterial efficiency and insufficient dependence on ultraviolet light, which has become a research hotspot in the field of antibacterial materials.
As a new type of multifunctional inorganic antibacterial material, nano-magnesium oxide has broad application prospects in many fields. First, magnesium oxide is very easy to hydrate, and can also form a layer of magnesium hydroxide on the surface. The oxygen dissolved in the solution passes through the single Electron reduction reaction generates active oxygen ions, and the surface of magnesium oxide is covered with a layer of hydroxide ions. Since oxygen is chemically stable in an alkaline environment, high-concentration active oxygen ions can exist on the surface of magnesium oxide, while Active oxygen ions have strong oxidizing properties, which can destroy the peptide bond structure of the bacterial cell membrane wall and kill bacteria quickly.
According to the current characteristics of magnesium oxide, there are two main development paths for its antibacterial materials:
One is to improve the antibacterial properties of nano-magnesia through the control of particle size and shape characteristics. For example, a scale-shaped nano-magnesia split has strong antibacterial and bactericidal properties against anthrax, staphylococcus, and E. coli. ability.
In addition, through the compounding of magnesium oxide and other antibacterial materials, new composite antibacterial materials are developed, mainly including activated carbon/magnesia, metal oxides, magnesium oxide and chlorine, bromine/magnesia, etc.
Evenly dispersing the nano-magnesia powder on the activated carbon collective has good antibacterial properties against Staphylococcus aureus, and can use the surface of magnesium oxide to strengthen the adsorption on its surface to form a stable gas system of magnesium oxide/halogen group elements, so that it can Ensure safe and efficient use.