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SnS2 nanoplates/SnO2 nanotubes composites as efficient visible light-driven photocatalysts for Cr(VI) reduction

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Abstract

SnS2/SnO2 nanocomposites have been successfully prepared via a hydrothermal method using electrospun SnO2 nanotubes as both substrates and reactants. The ratios of the nanocomposites are controlled by varying the concentration of thioacetamide during the solvothermal synthesis processes. The as-prepared SnS2/SnO2 nanocomposites exhibit considerable improvement on the photocatalytic activities for the reduction of aqueous Cr(VI) under visible light irradiation. Their photoactivities are also much higher than that of SnS2 nanoplates and a physical mixture of SnO2 and SnS2. In particular, the SnS2/SnO2-B sample exhibits the highest photocatalytic activity. After visible light irradiation for 60 min, the reduction rate has reached about 100%. The photoelectrochemical analyses further show that the high photocatalytic activity of the SnS2/SnO2-B sample can be ascribed to the unique structural features and the intimate interfacial contact between SnS2 and SnO2, which is more effective separation of the photo-generated carriers.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (51672048), National Key Technology Research and Development Program of the Ministry of Science and Technology of China (2014BAC13B03) and Science and Technology Plan Project of Fujian Province (2015YZ0001-1).

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Authors and Affiliations

  1. State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350100, People’s Republic of China

    Na Qin, Kaiqiang Jing, Rui Chen, Jinhua Xiong, Ruowen Liang, Zhaohui Li & Ling Wu

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  1. Na Qin
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  2. Kaiqiang Jing
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  3. Rui Chen
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  4. Jinhua Xiong
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  5. Ruowen Liang
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  6. Zhaohui Li
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  7. Ling Wu
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Correspondence to Zhaohui Li or Ling Wu.

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Special Issue of the 1st International Symposium on Photocatalysis at Fuzhou University

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Qin, N., Jing, K., Chen, R. et al. SnS2 nanoplates/SnO2 nanotubes composites as efficient visible light-driven photocatalysts for Cr(VI) reduction. Res Chem Intermed 43, 5217–5228 (2017). https://doi.org/10.1007/s11164-017-3044-y

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  • DOI: https://doi.org/10.1007/s11164-017-3044-y

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