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Journal of Nanotechnology
Volume 2010, Article ID 479172, 5 pages
http://dx.doi.org/10.1155/2010/479172
Research Article

Synthesis of Microfiber with Secondary Nanostructure by Cotton Template

Nanomaterials Research Institute, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

Received 2 September 2009; Accepted 10 January 2010

Academic Editor: Andrei Kolmakov

Copyright © 2010 Huan-qin Wang 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

Hierarchical microfibers were prepared by using cotton as the template and as the precursor via an ultrasonic assistance route. The results of scanning electron microscope characterization showed that the concentration of had a significant effect on the morphology of microfiber. At low concentration of , the microfiber was composed of nanorods with single crystal structure. With increasing the concentration of , the secondary nanostructure of microfibers had a transformation from nanorod to nanoparticle. The results of adsorption-desorption analysis indicated that microfibers had BET surface area of about 25  /g. This synthesis provides a new way to control the secondary nanostructure of microfiber by adjusting the concentration of precursor. Furthermore, the mechanism for the replication was proposed and discussed.