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Journal of Nanomaterials
Volume 2014, Article ID 381235, 6 pages
http://dx.doi.org/10.1155/2014/381235
Research Article

Mesoporous Alumina Microfibers In Situ Transformation from AACH Fibers and the Adsorption Performance

School of Materials Science and Engineering, University of Science and Technology, Nanjing 210094, China

Received 11 November 2013; Accepted 6 December 2013; Published 29 January 2014

Academic Editor: Hui Xia

Copyright © 2014 Xiaoqin Shi 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

Well-dispersed mesoporous γ-alumina microfibers with high surface were prepared by thermal decomposition of the ammonium aluminum carbonate hydroxide (AACH) precursors. The as-synthesized alumina retained the morphology of its precursor and exhibited memory effect. The structural, morphological, porous, and adsorptive properties of the samples were investigated by XRD, FTIR, TGA-DSC, SEM, TEM, and UV-vis spectroscopy. The prepared γ-alumina microfibers exhibited excellent ability to remove organic pollutants from waste water because of their mesoporous structures. The γ-alumina in situ converted from AACH synthesized without surfactant exhibited adsorption ability for Congo red as good as that synthesized with PEG2000 and better than PEG20000 that provided a facile method without surfactant to synthesize γ-alumina with excellent adsorption performance.