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The Scientific World Journal
Volume 2013, Article ID 410594, 5 pages
http://dx.doi.org/10.1155/2013/410594
Research Article

Wet Chemical Controllable Synthesis of Hematite Ellipsoids with Structurally Enhanced Visible Light Property

1Department of Chemical and Material Engineering, Hefei University, Hefei 230601, China
2Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China

Received 4 August 2013; Accepted 5 September 2013

Academic Editors: K. Prokeš and D. Zhang

Copyright © 2013 Chengliang Han 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

A facile and economic route has been presented for mass production of micro/nanostructured hematite microcrystals based on the wet chemical controllable method. The as-prepared samples were characterized using X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and UV-Vis absorption spectroscopy. The results showed that the product was mesoporous α-Fe2O3 and nearly elliptical in shape. Each hematite ellipsoid was packed by many α-Fe2O3 nanoparticles. The values of vapor pressure in reaction systems played vital roles in the formation of porous hematite ellipsoids. Optical tests demonstrated that the micro/nanostructured elliptical hematite exhibited enhanced visible light property at room temperature. The formation of these porous hematite ellipsoids could be attributed to the vapor pressure induced oriented assembling of lots of α-Fe2O3 nanoparticles.