高等学校化学学报

高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (1): 82.

• 论文 • 上一篇    下一篇

室温下纳米氧化锌新相的合成及表征

杨青林1, 郭林2, 吴中华3, 江雷4, 徐文国1, 李前树1   

  1. 1. 北京理工大学化工与材料学院, 北京 100081;
    2. 北京航空航天大学材料系, 北京 100083;
    3. 中国科学院高能物理研究所国家同步辐射实验室, 北京 100039;
    4. 中国科学院化学研究所分子科学中心, 北京 100080
  • 收稿日期:2000-04-24 出版日期:2003-01-24 发布日期:2003-01-24
  • 通讯作者: 李前树(1942年出生),男,教授,博士生导师,从事理论化学及纳米材料研究.
  • 基金资助:

    国家教育部博士点基金(批准号:95968);BSRF基金资助

Synthesis of New Phase ZnO Nanoparticles Under Room Temperature and Characterization

YANG Qing-Lin1, GUO Lin2, WU Zhong-Hua3, JIANG Lei4, XU Wen-Guo1, LI Qian-Shu1   

  1. 1. School of Chemical Engineering and Materials Sciences, Beijing Institute of Technology, Beijing 100081, China;
    2. Department of Mertireal Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China;
    3. National Synchrotron Radiation Laboratory, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039, China;
    4. Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Bejing 100080, China
  • Received:2000-04-24 Online:2003-01-24 Published:2003-01-24
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被引次数

69

摘要： 常温常压下,用高分子聚乙烯吡咯烷酮(PVP)作为表面修饰剂,成功地合成了粒度分布窄、平均粒度为4.0nm的氧化锌纳米微粒,其晶体结构与文献报道在高温高压(450℃,6×108Pa)下合成的体相ZnO具有相同结构.EXAFS实验结果表明,纳米Zn-O的键长比体相发生收缩,Zn原子周围的氧配位数减少.

关键词: ZnO纳米微粒, X射线衍射, 扩展X射线吸收精细结构

Abstract: In the present research, we report the synthesis of ZnO nanoparticles modified by polyvinyl pyrrolidone(PVP). The resulting ZnO has the mean diameter of 4.0 nm with the narrow distribution. It has the same structure phase with bulk ZnO which is synthesized under 450 ℃, 6×108 Pa preparation condition. The EXAFS results reveal that with the decrease of ZnO particle sizes to the nanometer range the coordination number decrease. The interaction between oxygen and Zinc is relatively stronger in these nanosized materials, the Zn-O bond length is slightly shorter than one in the bulk ZnO indicating a structural contraction for the small nanoparticles.

Key words: ZnO nanopartilces, X-ray diffraction, Extended X-ray absorption fine structure

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