高等学校化学学报

高等学校化学学报 ›› 2009, Vol. 30 ›› Issue (11): 2107.

• 研究论文 • 上一篇    下一篇

新型纳米结构V10O24·12H2O的制备及结构表征

孙娟萍, 吴广明, 张明霞, 崔朝军, 杨辉宇, 张志华, 周斌, 沈军   

  1. 同济大学波耳固体物理研究所, 上海 200092
  • 收稿日期:2008-12-10 出版日期:2009-11-10 发布日期:2009-11-10
  • 通讯作者: 吴广明, 男, 博士, 教授, 主要从事纳米材料的研究. E-mail: gmingwu@online.sh.cn
  • 基金资助:

    国家自然科学基金(批准号: 50752001)、上海市科学技术科研计划项目(批准号: 07JC14052)、上海市重点实验室项目(批准号: 07DZ22302)和上海市教委科研创新项目(批准号: 08ZZ22)资助.

Preparation and Characterization of Novel Nanometer Materials V10O24·12H2O

SUN Juan-Ping, WU Guang-Ming*, ZHANG Ming-Xia, CUI Chao-Jun, YANG Hui-Yu, ZHANG Zhi-Hua, ZHOU Bin, SHEN Jun   

  1. Pohl Institute of Solid State Physics, Tongji University, Shanghai 200092, China
  • Received:2008-12-10 Online:2009-11-10 Published:2009-11-10
  • Contact: WU Guang-Ming. E-mail: gmingwu@online.sh.cn
  • Supported by:

    国家自然科学基金(批准号: 50752001)、上海市科学技术科研计划项目(批准号: 07JC14052)、上海市重点实验室项目(批准号: 07DZ22302)和上海市教委科研创新项目(批准号: 08ZZ22)资助.

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摘要：

以V2O5粉末为原料, 在常压下制备新型纳米结构V10O24·12H2O材料, 并分析了其反应机制. 利用XRD, TEM, TG-DSC, FTIR和XPS对其结构和形貌等进行了表征. 结果表明, V10O24·12H2O的层间距d(002)≈1.43 nm; 微观形貌为球形, 球径40~60 nm; 有V4+和V5+两种化学状态; IR峰的变化主要由晶格膨胀和V4+引起; 存在吸附水、层间水及结晶水.

关键词: V10O24·12H2O纳米粉体; 晶体结构; 混合价; 红外吸收; 溶胶-凝胶

Abstract:

The novel mixed-valence vanadium oxide V10O24·12H2O nano-structure were prepared by Sol-Gel process with the industrial V2O5 powder as the starting materials and a simple peroxyde reaction route in this paper, and the formation mechanism has been clarified. XRD, TEM, TG-DSC, FTIR and XPS measurements were used to obtain structure and infrared vibration of the V10O24·12H2O. The analyses showed that the V10O24·12H2O have a nano-structure with porous, and the diameter about 40—60 nm. The infrared absorption properties were discussed based on the vibration model and the change of bond length before and after reaction. It has reveal that shift of the absorption peaks of the V10O24·12H2O was caused by the lattice expansion and formation of low valence vanadium ion in V10O24·12H2O. This mixed-valence vanadium oxide has a nanoporous structure which make it a potential candidate to be used as cathode in lithium-based batteries.

Key words: V10O24·12H2O nanopower; Crystal structure; Mixed valence; Infrared absorption; Sol-Gel

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