Journal
CRYSTENGCOMM
Volume 14, Issue 17, Pages 5627-5633Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2ce25309g
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Funding
- Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry [BZY09003]
- Ministry of Human Resources and Social Security [BZY09012]
- National Natural Science Foundation of China [20803096, 21073238]
- NSF of Hubei Province [2010CDA082]
- Key Laboratory of Green Catalysis of Sichuan Institute of High Education [LYJ1108]
- National Basic Research Program of China [2011CB211704]
- Student Innovative and Venture Training Program of South Central University for Nationalities [GCX12006]
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Novel SnO2 nanoparticle-decorated SnS2 nanosheets were synthesized via a one-pot solvothermal process using SnCl4 center dot 5H(2)O and CH4N2S as precursors. SnS2@SnO2 nanosheets were characterized by XRD, TEM, FESEM, XPS and UV-vis diffuse reflectance spectra (DRS). The band-gap of SnO2@SnS2 can be easily tuned by the controlled experimental strategy. Anisole and ethanol with different volume ratios were used as binary solvent to tune the composition of SnS2@SnO2 nanocomposites (NCs) continuously and the composites gradually change from hexagonal SnS2 into tetragonal SnO2. All of the SnS2@SnO2 nanosheets exhibited enhanced visible light photocatalytic activity, which was remarkably superior to SnS2, SnO2 and Degussa P-25. The obtained SnS2@SnO2 NCs with V-ethanol/V-anisole = 1 : 2 showed the best photocatalytic capability. Furthermore, the formation mechanism of SnS2@SnO2 nanosheets has also been discussed.
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