PROCESS FOR PREPARING TIN DIOXIDE NANOPARTICLES WITH CARBOXYLATE PRECURSOR

摘要

Provided is a method for preparing tin dioxide nanoparticles which have inhibited coagulation between particles, uniform size distribution, and excellent dispersibility. The method comprises the steps of: forming tin oxide core by solvothermal synthesis with precursor based on carboxylic acid tin; and crystallizing the oxide core. The method further comprises the step of modifying a surface of the tin oxide crystal to impart water-dispersion to the surface. The first step comprises adding a precursor of carboxylic acid tin having chain length of hydrocarbon of 3-30 to solvothermal reactor together with first organic solvent, and reacting the precursor at 100-130 deg.C for 1-12 hours so as to form a core of tin oxide, and the second step comprises heating and crystallizing the core of tin oxide obtained in the first step at 200-300 deg.C for 1-24 hours.