Manufacturing method of nano zinc oxide powders by hydrothermal method

摘要

PURPOSE: A method for manufacturing nano zinc oxide powder is provided to synthesize various types of nano-size zinc oxide powder by varying a starting material and precipitant. CONSTITUTION: A method for manufacturing 100-200nm nano zinc oxide powder of a plate and needle shape comprises a step of performing hydrothermal treatment of Zn(NO3)26H2O as a starting material and NaOH as a precipitant using cyclohexylamine as a reaction controller at 200-250C for 2-10 hours. A method for manufacturing spherical nano zinc oxide powder of 50 nm or less comprises the steps of: performing hydrothermal treatment of Zn(CH3COO)22H2O as a starting material and urea as a precipitant at 120-220C for 5-12 hours; and heat treating them at 250-300C for 12 hours.