Preparation of Nanocrystalline Tin Dioxide Particles via the Acrylamide Polymerization Process

摘要

We report simple acrylamide polymerization process to prepare nanocrystalline tin dioxide(SnO_2) particles.A small amount of the so-called premix solution(monofunctional acrylamide and difunctional N,N'-methylenebisacrylamide) was mixed with the aqueous solution of Sn^(4+) in certain proportion,and a few drops of ammonium persulfate solution were added as initiator.When homogenized by magnetic stirring and heated to about 70℃,the mixed solution became a gel.This hydrous gel was directly decomposed by thermal treatment,resulting in obtaining rutile crystalline SnO_2 particles with a narrow size distribution typically in the range of 20 nm～40 nm.