Method for producing zinc oxide powder having antibacterial property

摘要

To provide a method for producing a zinc oxide powder having excellent antibacterial performance even in a dark place.SOLUTION: The method for producing an antimicrobial zinc oxide powder of the present invention is characterized in that a hexagonal plate-like zinc oxide powder is calcined in a zinc nitrate aqueous solution having a concentration of 2 to 4 mol / L at a temperature of 170 to 200 [ For 15 hours, and a step of heat treating the basic zinc nitrate produced by the hydrothermal treatment at a temperature of 400 to 500 C. for 0.5 to 3 hours in the atmosphere. In this case, the hydrothermal treatment is preferably carried out in a zinc nitrate aqueous solution of about 3 mol / L at a temperature of about 190 C. for about 7 hours. As the hexagonal plate-like zinc oxide powder, a plate diameter of 100 To 300 nm is preferably used.(FIG.