期刊文献+

无机溶胶-凝胶法制备B型和M型VO_2粉体 被引量:2

Preparation of VO_2(B) and VO_2(M) powder by inorganic sol-gel method
下载PDF
导出
摘要 以V2O5为原料,采用无机溶胶-凝胶法制备出V2O5粉体,在H2气氛下热处理得到了VO2(B)粉体,再在Ar气氛下热处理VO2(B)粉体,制备出了VO2(M)粉体。采用X射线衍射(XRD)、红外吸收光谱(IR)、差热分析(DTA)等方法对样品进行了成分和结构分析,结果表明,当热处理温度为500℃、H2浓度50%时,得到VO2(B)粉体;然后,在Ar气氛下分别经过550、600、650、700℃处理1h后,VO2由B型向M型转变,700℃处理成功制备出了VO2(M)粉体。 VO2(B) powder was synthesized by reducing V2O5 powders in H2, which was prepared by inorganic sol-gel method. Then VO2(M) is obtained after annealing VO2(B) in Ar. X-ray diffraction(XRD), infrared absorption spectrum(IR) and differential thermal analysis(DTA) were employed to characterize the component and structure of the preparated powder. The results show that VO2(B) can be made at 500℃ in 50% H2 atmosphere. After respectively annealed at 550, 600, 650, 700℃ in Ar atmosphere for 1h, VO2(B) transforms to VO2(M) in various degree. After VO2(B) is treated at 700℃. VO2(M) is prepared successfully.
出处 《功能材料》 EI CAS CSCD 北大核心 2010年第A03期489-491,共3页 Journal of Functional Materials
基金 上海市科委基础研究重点资助项目(08JC1419000)
关键词 无机溶胶-凝胶法 V2O5 VO2(B) VO2(M) 晶型转变 inorganic sol-gel V2O5 VO2(B) VO2(M) crystal transformation
  • 相关文献

参考文献6

二级参考文献74

  • 1Volker Eyert. The Metal-insulator transitions of VO2:a band theoretical approach [J]. Ann. Phys., 2002,11:650-702.
  • 2Guelfucci M F. Electronic calculations on rutile VO2 by the LMTO-ASA method [J]. Journal of Physics and Chemistry of Solids, 2001,62:1961-1966.
  • 3Lopez R, Boatner L A, Haynes T E. Enhanced hysteresis in the semiconductor-to-metal phase transition of VO2 precipitates formed in SiO2 by ion implantation [J]. Appl. Phys. Lett., 2001,79:3161-3163.
  • 4Griffiths C H, Eastwood H K. Influence of stoichiometry on the metal-semiconductor transition in vanadium dioxide [J]. J. Appl. Phys., 1974,45(5):2201-2206.
  • 5Zheng Chenmou, Zhang Jieli, Luo Guobin, et al. Preparation of VO2 powders by thermolysis of precursor at low temperature [J]. J. Mater. Sci., 2000,35(11):3425-3429.
  • 6Rao R R, Rao P K. A new oxidimetric reagent:postassium dichromate in a strong phosphoric acid medium-Ⅵ:potentiometric titration of vanadium(Ⅲ) alone and in mixture with vanadium (Ⅳ) [J]. Talanta,1966,13:1335-1340.
  • 7Goodenough John B. The two components of the crystallographic transition in VO2 [J]. Journal of Solid Chemistry, 1971,3:490-500.
  • 8Morin F. Phys. Rev. Lett., 1959,13(1),34.
  • 9Kucharczyk D., Niklewski T. J. Appl. Cryst., 1979, 12,370.
  • 10Nii J., Wakihara M., Taniguchi M. Mat. Res. Bull., 1979,14, 1069.

共引文献67

同被引文献95

引证文献2

二级引证文献1

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部