A Co-catalyst-Loaded Ta3N5 Photoanode with a High Solar Photocurrent for Water Splitting upon Facile Removal of the Surface Layer

Authors

  • Mingxue Li,

    1. Ecomaterials and Renewable Energy Research Center, National Laboratory of Solid State Microstructures, Department of Physics, Nanjing University, Nanjing 210093 (P. R. China)
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    • These authors contributed equally to this work.

  • Dr. Wenjun Luo,

    Corresponding author
    1. Ecomaterials and Renewable Energy Research Center, National Laboratory of Solid State Microstructures, Department of Physics, Nanjing University, Nanjing 210093 (P. R. China)
    • Ecomaterials and Renewable Energy Research Center, National Laboratory of Solid State Microstructures, Department of Physics, Nanjing University, Nanjing 210093 (P. R. China)

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    • These authors contributed equally to this work.

  • Dapeng Cao,

    1. College of Engineering and Applied Science, Nanjing University, Nanjing 210093 (P. R. China)
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  • Xin Zhao,

    1. Ecomaterials and Renewable Energy Research Center, National Laboratory of Solid State Microstructures, Department of Physics, Nanjing University, Nanjing 210093 (P. R. China)
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  • Prof. Zhaosheng Li,

    1. College of Engineering and Applied Science, Nanjing University, Nanjing 210093 (P. R. China)
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  • Prof. Tao Yu,

    1. Ecomaterials and Renewable Energy Research Center, National Laboratory of Solid State Microstructures, Department of Physics, Nanjing University, Nanjing 210093 (P. R. China)
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  • Prof. Zhigang Zou

    Corresponding author
    1. Ecomaterials and Renewable Energy Research Center, National Laboratory of Solid State Microstructures, Department of Physics, Nanjing University, Nanjing 210093 (P. R. China)
    • Ecomaterials and Renewable Energy Research Center, National Laboratory of Solid State Microstructures, Department of Physics, Nanjing University, Nanjing 210093 (P. R. China)

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  • This work is supported by the National Basic Research Program of China (973 Program, 2013CB632404) and the National Natural Science Foundation of China (No. 50902068, 51272101, 11174129). M. Li. is also supported by the Science Research Foundation of Graduate School of Nanjing University. We thank Mr. Robert Rozansky of Brown University for his editing of English.

Abstract

original image

Surface exfoliation: A Ta3N5 photoanode prepared by a thermal oxidation and nitridation method shows a high solar photocurrent. This photocurrent is currently the highest achieved by a Ta3N5 photoanode. The photocurrent is obtained mainly because of facile thermal and mechanical exfoliation of the surface passivation layer of the Ta3N5 photoanode (see picture).

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