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International Journal of Photoenergy
Volume 2014 (2014), Article ID 394146, 7 pages
http://dx.doi.org/10.1155/2014/394146
Research Article

Surfactant-Free Synthesis of Single Crystalline SnS2 and Effect of Surface Atomic Structure on the Photocatalytic Property

1TU-NIMS Joint Research Center and Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering, Tianjin University, 92 Weijin Road, Nankai District, Tianjin 300072, China
2Collaborative Innovation Center of Chemical Science and Engineering, 92 Weijin Road, Nankai District, Tianjin 300072, China

Received 14 July 2014; Accepted 8 September 2014; Published 1 December 2014

Academic Editor: Wenjun Luo

Copyright © 2014 Mengyi Li 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

Sheetlike tin disulfide (SnS2) single crystal exposed with well-defined facets and flowerlike SnS2 mainly exposed with facets were prepared through a surfactant-free solvothermal process. Photocatalytic degradation of methyl orange (MO) under visible light irradiation indicated that the sheetlike SnS2 showed a much higher activity than flowerlike SnS2. Theoretical and experimental results revealed that the band structure derived from the surface atomic structure played a more important role than the surface energy in the photocatalytic property. The present work has provided a deep insight into the important role of the surface energy and band structure, both of which are derived from the surface atomic structure, in the photocatalytic activity.