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Size-dependent activity and selectivity of carbon dioxide photocatalytic reduction over platinum nanoparticles

Author

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  • Chunyang Dong

    (East China University of Science and Technology)

  • Cheng Lian

    (East China University of Science and Technology)

  • Songchang Hu

    (East China University of Science and Technology)

  • Zesheng Deng

    (East China University of Science and Technology)

  • Jianqiu Gong

    (East China University of Science and Technology)

  • Mingde Li

    (Shantou University)

  • Honglai Liu

    (East China University of Science and Technology)

  • Mingyang Xing

    (East China University of Science and Technology)

  • Jinlong Zhang

    (East China University of Science and Technology)

Abstract

Platinum nanoparticles (Pt NPs) are one of the most efficient cocatalysts in photocatalysis, and their size determines the activity and the selectivity of the catalytic reaction. Nevertheless, an in-depth understanding of the platinum’s size effect in the carbon dioxide photocatalytic reduction is still lacking. Through analyses of the geometric features and electronic properties with variable-sized Pt NPs, here we show a prominent size effect of Pt NPs in both the activity and selectivity of carbon dioxide photocatalytic reduction. Decreasing the size of Pt NPs promotes the charge transfer efficiency, and thus enhances both the carbon dioxide photocatalytic reduction and hydrogen evolution reaction (HER) activity, but leads to higher selectivity towards hydrogen over methane. Combining experimental results and theoretical calculations, in Pt NPs, the terrace sites are revealed as the active sites for methane generation; meanwhile, the low-coordinated sites are more favorable in the competing HER.

Suggested Citation

  • Chunyang Dong & Cheng Lian & Songchang Hu & Zesheng Deng & Jianqiu Gong & Mingde Li & Honglai Liu & Mingyang Xing & Jinlong Zhang, 2018. "Size-dependent activity and selectivity of carbon dioxide photocatalytic reduction over platinum nanoparticles," Nature Communications, Nature, vol. 9(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-03666-2
    DOI: 10.1038/s41467-018-03666-2
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    Cited by:

    1. Zhengwei Yang & Zhen-Yu Wu & Zhexing Lin & Tianji Liu & Liping Ding & Wenbo Zhai & Zipeng Chen & Yi Jiang & Jinlei Li & Siyun Ren & Zhenhui Lin & Wangxi Liu & Jianyong Feng & Xing Zhang & Wei Li & Yi , 2024. "Optically selective catalyst design with minimized thermal emission for facilitating photothermal catalysis," Nature Communications, Nature, vol. 15(1), pages 1-10, December.
    2. Wei Li & Wen Duan & Guocheng Liao & Fanfan Gao & Yusen Wang & Rongxia Cui & Jincai Zhao & Chuanyi Wang, 2024. "0.68% of solar-to-hydrogen efficiency and high photostability of organic-inorganic membrane catalyst," Nature Communications, Nature, vol. 15(1), pages 1-10, December.

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