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高质量四脚状ZnO纳米结构的制备及其影响因素

于伟东; 李效民; 高相东   

  1. 中国科学院上海硅酸盐研究所高性能陶瓷和超微结构国家重点实验室, 上海 200050
  • 收稿日期:2004-02-10 修回日期:2004-03-09 出版日期:2005-03-20 网络出版日期:2005-03-20

Synthesis and Influence Factors of High-quality Tetrapodlike ZnO Nanostructures

YU Wei-Dong; LI Xiao-Min; GAO Xiang-Dong   

  1. State Key Laboratory of High Performance Ceramics and Superfine Microstructure; Shanghai Institute of Ceramics; Chinese Academy of Sciences; Shanghai 200050; China
  • Received:2004-02-10 Revised:2004-03-09 Published:2005-03-20 Online:2005-03-20

摘要: 采用汽相传输法制备高质量四脚状ZnO纳米结构(T-ZnO).以ZnO纳米晶为同质催 化剂,在锌源-衬底间添加蒸汽过滤器,研究过滤器和纳米晶对产物组成和形态的影响,以及 T-ZnO的结构特征.实验结果表明,T-ZnO为纤锌矿结构,分布均匀、尺寸一致,由四个柱 状纳米棒和一个球形核心组成.纳米棒直径约为60nm,沿<0001>晶向生长.过滤器的使用可 有效地去除产物中颗粒,而ZnO纳米晶的使用明显降低其尺寸,提高其均匀性.

关键词: 四脚状氧化锌纳米结构, 同质催化, 影响因素

Abstract: High-quality tetrapodlike ZnO nanostructures (T-ZnO) were synthesized by a vapor transport method, in which
ZnO nanocrystals were used as homogeneous catalyst and a vapor filter was placed between the source and the substrate. The microstructure of T-ZnO
and the effects of the filter and ZnO nanocrystals on the constitute and morphology of the products were investigated. Results show that T-ZnO is
uniform and evenly distributing, constituted by four pillarlike nanorods and a spheral core. All components are wurtzite structure. The diameter of
nanorods is 60nm, growing along <0001> direction. The use of filter leads to the effective remove of the particles in the products. ZnO
nanocrystals are beneficial to reduce the size and improve the uniformity of the product.

Key words: tetrapodlike ZnO nanostructure, homogenous catalyst, influence factors

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