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Synthesis and Characterization of Novel Vanadium Dioxide Nanorods

Published online by Cambridge University Press:  01 February 2011

Wen Chen ,
Liqiang Mai ,
congsheng Jiang ,
Junfeng Peng ,
Qing Xu  and
Quanyao Zhu
Wen Chen
Affiliation:
Institute of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070 Hubei, P. R. China
Liqiang Mai
Affiliation:
Institute of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070 Hubei, P. R. China
congsheng Jiang
Affiliation:
Institute of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070 Hubei, P. R. China
Junfeng Peng
Affiliation:
Institute of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070 Hubei, P. R. China
Qing Xu
Affiliation:
Institute of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070 Hubei, P. R. China
Quanyao Zhu
Affiliation:
Institute of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070 Hubei, P. R. China
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Abstract

Vanadium dioxide nanorods (B phase) have been synthesized, for the first time, using cetyltrimethylammonium bromide (CTAB) as structure-directing template in hydrothermal condition. Morphology and structure of the sample were characterized by XRD, SEM, HRTEM, XPS, TG-DTA and redox titration. The results show that the products are VO2 (B) nanorods and they are 1∼2 μm in length. HRTEM micrographs reveal that they indeed form bundles of agglomerated smaller filaments with diameters ranging from 20 to 40 nm. This filament-like shape in the nanoscale dimension leads to the exposure of a large fraction of the atoms to the surface. Thus, these materials are promising candidates for the development of new functionalized materials. TG investigation shows that there are a weight loss of 2.21 % between 250∼400 °C corresponding to removal of the organic residuals and a weight gain at about 430 °C corresponding to oxidation of vanadium with low oxidation state. The simplicity of hydrothermal process, cheapness, and availability of raw materials are advantages favoring the scaling-up of nanorods.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 788: Symposium L – Continuous Nanophase and Nanostructured Materials , 2003 , L12.7
Copyright
Copyright © Materials Research Society 2004

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