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Advances in Materials Science and Engineering
Volume 2015, Article ID 907539, 6 pages
Research Article

Preparation, Characterization, and Photocatalytic Properties of Modified Red Mud

School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China

Received 29 May 2015; Revised 11 July 2015; Accepted 14 July 2015

Academic Editor: Luigi Nicolais

Copyright © 2015 Mingjie Ma 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.


Solid waste red mud was modified by HCl leaching. The structure property and composition of modified red mud were investigated by X-ray diffraction (XRD), X-ray fluorescence spectroscopy (XRF), scanning electron microscopy (SEM), and Brunauer-Emmett-Teller (BET). Under UV irradiation, methyl orange (MO) aqueous solution was photodegraded by modified red mud. The obtained results showed that the specific surface area of modified red mud was 317.14 m2/g, which was about 40 times higher than that of the normal red mud. After UV irradiation for 50 min, the removal percentage of MO reached 94.2%. The study provided a novel way for the application of red mud to the photocatalytic degradation of organic wastes.