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Journal of Nanomaterials
Volume 2014 (2014), Article ID 793610, 10 pages
http://dx.doi.org/10.1155/2014/793610
Review Article

Application of Metal Oxide Heterostructures in Arsenic Removal from Contaminated Water

1Key Laboratory of Biofuels, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China
2Henan Tianchen Environmental Protection Science & Technology Co., Ltd., Zhengzhou 450000, China

Received 10 December 2013; Accepted 2 January 2014; Published 18 February 2014

Academic Editor: Xiang Wu

Copyright © 2014 Lei Chen 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

It has become one of the major environmental problems for people worldwide to be exposed to high arsenic concentrations through contaminated drinking water, and even the long-term intake of small doses of arsenic has a carcinogenic effect. As an efficient and economic approach for the purification of arsenic-containing water, the adsorbents in adsorption processes have been widely studied. Among a variety of adsorbents reported, the metal oxide heterostructures with high surface area and specific affinity for arsenic adsorption from aqueous systems have demonstrated a promising performance in practical applications. This review paper aims to summarize briefly the metal oxide heterostructures in arsenic removal from contaminated water, so as to provide efficient, economic, and robust solutions for water purification.