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电喷雾和二步热处理制备无硬团聚纳米氧化锌

张 攀, 李建林   

  1. 上海大学 材料科学与工程学院, 上海 200072
  • 收稿日期:2008-10-31 修回日期:2008-12-27 出版日期:2009-07-20 网络出版日期:2009-07-20

Fabrication of Agglomerate-free ZnO Nanoparticles by Electrospraying
and Subsequent Two-step Heat Treatment

ZHANG Pan, LI Jian-Lin   

  1. School of Material Science and Engineering, Shanghai University, Shanghai 200072, China
  • Received:2008-10-31 Revised:2008-12-27 Published:2009-07-20 Online:2009-07-20

摘要: 通过电喷雾和二步热处理法制备得到无硬团聚的ZnO纳米微粒, 为制备无硬团聚氧化物纳米粉体提供了一种新方法. 试验采用添加适量PVP的Zn(CH3COO)2·2H2O的乙醇溶液作为电喷雾液体, 经过锥形喷雾得到均匀的微米级小液滴. 干燥后的喷雾产物先后在氮气炉和空气炉中分别600℃和400℃保温1h进行二步热处理. SEM、XRD测试结果表明, 使用该方法制备得到的ZnO纳米微粒粒度均匀, 结晶完整, 无硬团聚, 具有六角纤锌矿结构.

关键词: ZnO, 电喷雾, 纳米微粒

Abstract: Agglomerate-free ZnO nanoparticles were prepared by electrospraying and subsequent two-step heat treatment, providing a novel way for the fabrication of agglomeratefree oxide nanopowders. Using Zn(CH3COO)2·2H2O ethanol solution added proper polyvinylpyrrolidone as electrosprayed liquid, a cone-jet was successfully formed that produced symmetrical micron droplets. The electrosprayed products were dried then. Agglomerate-free ZnO nanoparticles were derived after annealing the dried electrosprayed products in nitrogen at 600℃ for 1h followed by annealing in air at 400℃ for 1h. Results of SEM and XRD tests demonstrate that the as-prepared ZnO nanoparticles are well developed with a uniform size, and a hexagonal wurtzite structure.

Key words: ZnO, electrospray, nanoparticle