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3D flowerlike TiO2/GO and TiO2/MoS2 heterostructures with enhanced photoelectrochemical water splitting

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Abstract

TiO2 nanoflowers modified with MoS2 and GO nanosheets are prepared by a one-step hydrothermal method followed by a dip-coating process. The morphology, structure and composition of the samples are investigated by XRD, SEM and XPS, respectively. The photoelectrochemical (PEC) measurement reveals that the modified samples exhibit obvious improved photocurrent density. The enhancement can be attributed to the higher absorption in visible light region and faster charge transmission as analyzed by the UV–Vis absorption, photoluminescence spectra and electrochemical impedance analysis. This facile method provides a promising low-cost way to enhance the PEC performance of TiO2-based photoanodes.

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Acknowledgements

The financial aids of Zhejiang Provincial Natural Science Foundation of China (Grant No. LGG18E020004), Chinese National Natural Science Foundation (Grant No. 61704042) and Science and Technology Project of Zhejiang Province (Grant No. 2015C37037) are gratefully acknowledged.

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Authors and Affiliations

  1. College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou, 310018, China

    Hongxia Li, Wei Dong, Junhua Xi, Gang Du & Zhenguo Ji

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  1. Hongxia Li
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  2. Wei Dong
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  3. Junhua Xi
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  4. Gang Du
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  5. Zhenguo Ji
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Correspondence to Hongxia Li or Zhenguo Ji.

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Li, H., Dong, W., Xi, J. et al. 3D flowerlike TiO2/GO and TiO2/MoS2 heterostructures with enhanced photoelectrochemical water splitting. J Mater Sci 53, 7609–7620 (2018). https://doi.org/10.1007/s10853-018-2051-8

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