催化学报

催化学报 ›› 2010, Vol. 31 ›› Issue (1): 44-48.

• 研究论文 • 上一篇    下一篇

SnO2 纳米棒的氧化还原特性

赵鹤云 1,2, 赵忠泽 3, 赵义芬 1, 柳清菊 1,2   

  1. 1 云南大学材料科学与工程系, 云南昆明 650091 2 云南大学云南省高校纳米材料与技术重点实验室, 云南昆明 650091 3 云南师范大学商学院, 云南昆明 650106
  • 收稿日期:2010-01-25 出版日期:2010-01-25 发布日期:2010-01-25

The Redox Properties of SnO2 Nanorods

ZHAO Heyun1,2,*, ZHAO Zhongze3, ZHAO Yifen1, LIU Qingju1,2   

  1. 1Department of Materials Science and Engineering, Yunnan University, Kunming 650091, Yunnan, China 2Yunnan Key Laboratory of Nanomaterials and Nanotechnology, Yunnan University, Kunming 650091, Yunnan, China 3Business School, Yunnan Normal University, Kunming 650106, Yunnan, China
  • Received:2010-01-25 Online:2010-01-25 Published:2010-01-25

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2153

被引次数

33

摘要： 利用室温固相反应在 NaCl-KCl 熔盐介质中, 通过焙烧含 SnO2 纳米颗粒前驱体合成了 SnO2 纳米棒, 并采用 X 射线衍射、扫描电镜、透射电镜、选区电子衍射和 X 射线光电子能谱对 SnO2 纳米棒进行了表征. 结果表明, SnO2 纳米棒是表面光滑、结晶完整的金红石结构单晶体, 直径为 10~20 nm, 长度为几百纳米到几个微米. 程序升温还原结果表明, SnO2 纳米棒具有较好的氧化还原性能和催化活性. 探讨了 SnO2 纳米棒的氧化还原机理.

关键词: 二氧化锡, 纳米棒, 程序升温还原, 氧化还原特性, 催化活性, 氧化还原机理

Abstract: SnO2 nanorods were successfully synthesized in molten NaCl-KCl salt through calcination of SnO2 nanoparticles precursor prepared by solid state reaction at room temperature. The structure and morpho1ogy of SnO2 nanorods were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, selected-area electron diffraction, and X-ray photoelectron spectroscopy. The results showed that the SnO2 nanorods with 10–20 nm diameter and several micrometers length were rutile structure. The results of H2 temperature-programmed reduction demonstrated that the SnO2 nanorods had good redox performance. The redox mechanism was discussed in detail.

Key words: tin dioxide, nanorod, temperature-programmed reduction, redox property, catalytic activity, redox mechanism