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International Journal of Photoenergy
Volume 2014 (2014), Article ID 197824, 7 pages
Research Article

Synthesis, Characterization, and Photocatalytic Activity of Zn-Doped SnO2/Zn2SnO4 Coupled Nanocomposites

1Department of Materials Science and Engineering, Luoyang Institute of Science and Technology, Luoyang 471023, China
2State Key Lab of Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
3School of Materials Science and Engineering, Chongqing University of Technology, Chongqing 400050, China

Received 31 May 2013; Revised 8 November 2013; Accepted 11 November 2013; Published 28 January 2014

Academic Editor: Peter Robertson

Copyright © 2014 Tiekun Jia 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.


Zn-doped SnO2/Zn2SnO4 nanocomposites were prepared via a two-step hydrothermal synthesis method. The as-prepared samples were characterized by X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), UV-vis diffuse reflection spectroscopy, and adsorption-desorption isotherms. The results of FESEM and TEM showed that the as-prepared Zn-doped SnO2/Zn2SnO4 nanocomposites are composed of numerous nanoparticles with the size ranging from 20 nm to 50 nm. The specific surface area of the as-prepared Zn-doped SnO2/Zn2SnO4 nanocomposites is estimated to be 71.53 m2/g by the Brunauer-Emmett-Teller (BET) method. The photocatalytic activity was evaluated by the degradation of methylene blue (MB), and the resulting showed that Zn-doped SnO2/Zn2SnO4 nanocomposites exhibited excellent photocatalytic activity due to their higher specific surface area and surface charge carrier transfer.