Solvothermal preparation and characteristics of Sn-doped In₂O₃

来源期刊：中南大学学报(英文版)2008年第6期

论文作者：古映莹 秦利平 王曼娟 刘雪颖

文章页码：763 - 767

Key words：Sn-doped In₂O₃ (ITO); solvothermal process; microwave absorption; preparation

Abstract: Sn-doped In₂O₃ (ITO) nanopowders were prepared in ethanol solvent by solvothermal process. The effects of the solvothermal temperature, coprecipitation pH value and SnO₂ content on the products phase and microwave absorption were investigated by X-ray diffractometry and microwave reflectance. ITO nanopowders with cubic structure can be respectively prepared at 250 and 270 ℃ for 6 h. The prepared product is InOOH or the mixture of InOOH and In₃Sn₄O₁₂ when the solvothermal temperature is below 250℃. With rising solvothermal temperature and prolonging time, the absorption of the ITO powders gradually decreases. The products are ITO nanopowders by coprecipitating at pH=9 or 11, but ITO powders with Sn₃O₄ at pH=6. The absorption of powders prepared at pH=6 is better than that at any other pH value. The products are all ITO nanopowders and crystal size reduces with increasing SnO₂ content. The microwave absorption of ITO nanopowders with SnO₂ content of 8% (mass fraction) is the best among samples with different SnO₂ contents.

基金信息：the National Western Development and Technique Foundation during the 10th Five-Year Plan Period