喷雾热分解法制备纳米CeO_2粉末的研究进展  

Research progress of preparing CeO_2 nanoparticles by spray pyrolysis technique

作　　者：张鹿[1] 郑峰[1] 

机构地区：[1]中南大学材料科学与工程学院,长沙410083

出　　处：《粉末冶金材料科学与工程》2009年第6期365-372,共8页Materials Science and Engineering of Powder Metallurgy

基　　金：国家自然科学基金重点项目(50632070)

摘　　要：用喷雾热分解法(Spray Pyrolysis,简称SP)制备超细或纳米粉末具有产品纯度高、成分均匀、成分间的化学计量比易控制等优点,而且制备过程连续,操作简单,成本低。目前纳米CeO2被广泛用于催化剂、燃料电池、微电子等领域,颗粒的粒度与形貌是影响CeO2粉末特性的重要因素。该文作者从控制纳米CeO2粒度与形貌的角度,总结分析近年来国内外新型或改进的SP技术及其工艺特点,介绍纳米CeO2粒子在SP过程中的形成机制和影响因素,并指出现存的问题和今后的发展趋势。Spray Pyrolysis （SP） is a liquid-phase aerosol technique with advantages of high purity of product particles, low cost, simple operation, continuous process, ease controllable chemical uniformity and stoichiometry. CeO2 nanopartieles are widely used for real world applications such as catalysts, fuel cells, microelectronics and so on due to their unique physical and chemical performance. In the present paper, from the viewpoint of controlling the size and morphology of CeO2 nanoparticles, several innovative or improved SP techniques and their process characteristics have been evaluated and summarized on the basis of recent literatures published both at home and abroad. The influence and formation mechanism of CeO2 nanoparticle during SP technique have also been briefly described. The existing problems and development trends in the relative field have been indicated as well.

关 键 词：喷雾热分解 CEO2 纳米粒子 制备 

分 类 号：O614.33[理学—无机化学] TB383[理学—化学]