Controlled strategy to synthesize SnO2 decorated SnS2 nanosheets with enhanced visible light photocatalytic activity

被引：70

作者：

Zhou, Xianlong

Zhou, Tengfei

Hu, Juncheng ^{[1
]}

Li, Jinlin

机构：

[1] S Cent Univ Nationalities, State Ethn Affairs Commiss, Key Lab Catalysis & Mat Sci, Wuhan 430074, Hubei Province, Peoples R China

来源：

CRYSTENGCOMM | 2012年 / 14卷 / 17期

基金：

中国国家自然科学基金;

关键词：

HYDROTHERMAL SYNTHESIS; NANOSTRUCTURES; NANOCOMPOSITES; DEGRADATION; MECHANISM; OXIDATION; GROWTH;

D O I：

10.1039/c2ce25309g

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页码：5627 / 5633

页数：7

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