METHOD FOR CONTINUOUS PREPARATION OF INDIUM-TIN COPRECIPITATES AND INDIUM-TIN-OXIDE NANOPOWDERS WITH SUBSTANTIALLY HOMOGENEOUS INDIUM/TIN COMPOSITION, CONTROLLABLE SHAPE AND PARTICLE SIZE

摘要

Disclosed herein are indium tin oxide nanoparticles and a method for continuously producing precipitated indium-tin nanoparticles having a particle size range of substantially from about 10 nm to about 200 nm and a substantially consistent ratio of indium to tin in the resultant nanoparticles across the duration of the continuous process, based on the ratio of indium to tin in a seeding solution. The method comprises preparing intermediate indium and tin compounds of the general formula [M(OH)xCy], where M represents the indium or tin ionic component of indium or tin salts, C represents the cationic component of indium or tin salt(s), x is a number greater than 0 and y=[M*valance-x]/C* valance in the seeding solution., The intermediate compounds are continuously precipitated with a base solution in a reaction vessel initially having a solvent contained therein. The method also provides a means for controlling the shape of the resultant nanoparticles. The resultant indium-tin nanoparticles may be further processed into dispersions.