高等学校化学学报 ›› 2010, Vol. 31 ›› Issue (2): 235.

• 研究论文 • 上一篇    下一篇

利用Kirkendall效应制备Ce1-xTixO2中空纳米球

王增鹏, 赵永男, 余建国   

  1. 天津工业大学纳米结构材料研究所, 天津市改性与功能纤维重点实验室, 天津 300160
  • 收稿日期:2009-04-17 出版日期:2010-02-10 发布日期:2010-02-10
  • 通讯作者: 赵永男, 男, 博士, 教授, 从事微孔晶体与纳米结构材料制备及性能研究. E-mail: zhaoyn@263.net
  • 基金资助:

    天津市自然科学基金(批准号: 05YFJMJC13500)资助.

Synthesis of Ce1-xTixO2 Hollow Nanospheres via Kirkendall Effect

WANG Zeng-Peng, ZHAO Yong-Nan*, YU Jian-Guo   

  1. Institute of Nanostructured Materials, Tianjin Key Laboratory of Fiber Modification and Functional Fiber, Tianjin Polytechnic University, Tianjin 300160, China
  • Received:2009-04-17 Online:2010-02-10 Published:2010-02-10
  • Contact: ZHAO Yong-Nan. E-mail: zhaoyn@263.net
  • Supported by:

    天津市自然科学基金(批准号: 05YFJMJC13500)资助.

摘要:

利用Kirkendall效应, 在溶剂热条件下成功制备了复合氧化物Ce1-xTixO2的纳米空心球, 并通过XRD, TEM和XPS等测试手段进行了表征. 结果表明, Ce1-xTixO2纳米空心球的粒径为65 nm, 小于初始状态的CeO2纳米球, 并且Ce1-xTixO2纳米空心球的结构与前驱体CeO2晶体结构相同, 均为面心立方结构. Ti/Ce摩尔比和温度是影响产物形貌和结构的重要因素, 通过实验得出最佳反应条件为n(Ti)∶n(Ce)=8∶10, 于190 ℃反应8 h.

关键词: Kirkendall效应; Ce1-xTixO2; 中空纳米球; 复合氧化物

Abstract:

Ce1-xTixO2 hollow nanospheres were successfully synthesized via the Kirkendall effect under solvothermal conditions, which were characterized by means of XRD, TEM and XPS. The results showed that the hollow nanospheres were 65 nm in sizes, which was smaller than that of the original CeO2 nanospheres. The Ce1-xTixO2 hollow nanospheres were face-centered cubic structure as the same as CeO2 nanospheres. The influences of react temperature and Ti/Ce molar ratio were also discussed. The investigations indicated that high quality hollow nanospheres formed when Ti/Ce molar ratio was 8∶10 at 190 ℃ for 8 h.

Key words: Kirkendall effect; Ce1-xTixO2; Hollow nanosphere; Composite oxide

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