Investigation of the Formation of Layered Nanostructure of Vanadium XerogelReport as inadecuate




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Journal of Nanomaterials - Volume 2014 2014, Article ID 507129, 6 pages -

Research Article

Kazakh National Technical University Named after K.I. Satpaev, 22 Satpaev Street, Almaty 050013, Kazakhstan

Metallurgical & Materials Engineering, Colorado School of Mines, 1500 Illinois Street, Golden, CO 80401, USA

Received 30 July 2014; Revised 14 November 2014; Accepted 14 November 2014; Published 24 December 2014

Academic Editor: Shiren Wang

Copyright © 2014 M. S. Markametova et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The paper presents the results of a study of vanadium xerogel synthesized by sol-gel method. It shows that, during the aging process in gel formation, a layered fibrous chain structure of V–O occurs at the nanoscale. Highly anisotropic particles, similar in size to the “tapes” of vanadium oxide gel, were found on the surface of partially ordered layers. IR spectroscopic analyses of groups of V=O and of V–O bonds suggest that the high degree of order in the films is related to the fact that one of the water molecules is found to be short in double bonded V=O. Consequently, the growth chains take place predominantly in the plane equivalent to OH groups. Most of the VO–H consist of twisted spiral vanadium oxygen layers and have the morphology of tubes, the ends of which are open. Owing to such morphology of VO–H, significant structural flexibility is observed, which distinguishes them not only from carbon, but also from most other nanotubes.





Author: M. S. Markametova, B. Mishra, A. O. Baikonurova, S. B. Nurzhanova, and Y. V. Ermolaev

Source: https://www.hindawi.com/



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