A Cost-Effective Co-precipitation Method for Synthesizing Indium Tin Oxide Nanoparticles without Chlorine Contamination

Indium tin oxide （ITO） nanoparticles with crystallite size of 12.6 nm and specific surface area of 45.7 m 2 ·g-1 were synthesized by co-precipitation method.The indium solution was obtained by dissolving metal indium in HNO3.The tin solution was obtained by dissolving metal tin in HNO3 and followed by stabilizing with citric acid.The free of chlorine ions in the synthesis process brought several advantages：shortening the synthesis time,decreasing the particle agglomeration,decreasing the chlorine content in the ITO nanoparticles and improving the particle sinterability.This is the first time to report the synthesis of ITO nanoparticles free from chlorine contamination without using the expensive metal alkoxides as starting materials.

超细In_2O_3粉末的研制

采用溶胶－凝胶法制备了超细Ｉｎ２Ｏ３粉末，研究了产品的特性。实验表明，以１：１盐酸在６０￣８０℃溶解铟，用氨水作沉淀剂，控制ｐＨ５￣８，温度５０℃进行沉淀，所获沉淀在８０￣１００℃干燥后，再在８５０℃灼烧，可制得平均粒径０．０１５μｍ，纯度〉９９．９９％的Ｉｎ２Ｏ３粉末。设备与流程简单、污染少、产品质量高、性能好。

纳米氧化铟粉体的形貌与结构研究

用湿化学法制备了纳米级氧化铟超细粉体。利用透射电子显微镜、图像分析仪研究了纳米氧化铟粉体的形貌、尺寸分布和结构特征。结果表明 ,氧化铟粉体呈四方片状 ,尺寸在 10～30nm ,化学组分高纯 ,达到了纳米级粉末要求 ;粉体的尺寸均匀 ,但在不同条件下制得的粉体 ,其尺寸相差较大 ;

铟锡氧化物纳米粉体的制备

本文介绍了铟锡氧化物(ITO)纳米粉体主要的制备方法,如溶胶凝胶法,共沉淀法,溶剂热法,燃烧合成法等和几种辅助制备方法,如超声波辅助法,共沸蒸馏法,微波辅助加热等,对各种制备方法在制备ITO纳米粉体方面取得的进展及存在的问题进行了评述,最后探讨了铟锡氧化物纳米粉体制备方法的发展趋势。