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Journal of Nanomaterials
Volume 2012 (2012), Article ID 382603, 6 pages
http://dx.doi.org/10.1155/2012/382603
Research Article

Study on Pore Distribution and Formation Rule of Sepiolite Mineral Nanomaterials

1Institute of Power Source & Ecomaterials Science, Hebei University of Technology, Tianjin 300130, China
2Jiangsu Provincial Key Laboratory of Palygorskite Science and Applied Technology, Huaiyin Institute of Technology, Huaian 223003, China
3College of Engineering and Computing, Florida International University, Miami, FL 33174, USA

Received 23 October 2012; Accepted 5 November 2012

Academic Editor: Su Chen

Copyright © 2012 Qingguo Tang 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

Theoretical research and specific surface area analysis of nitrogen adsorption indicated that a lot of structural micropores exist in sepiolite minerals fibers. However, the microporous size, existing form, and the distribution relationship between microporous structures were not proved yet. In this paper, the section TEM samples of nanofibers were prepared on the basis of the metal embedding and cutting technique, and the inner structure of sepiolite nanofibers was observed by TEM. The results showed that sepiolite fibers have multiplayer structure similar to concentric circles, and many micropores with the size of about 2–5 nm are normal and parallel to the -axis. The reason for the previously mentioned phenomenon was explained by using BET analysis and X-ray diffraction analysis results.