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Ordered clustering of single atomic Te vacancies in atomically thin PtTe2 promotes hydrogen evolution catalysis

Author

Listed:
  • Xinzhe Li

    (Shenzhen University
    National University of Singapore)

  • Yiyun Fang

    (Shenzhen University
    National University of Singapore
    Northwestern Polytechnical University)

  • Jun Wang

    (Shenzhen University
    Wuhan University)

  • Hanyan Fang

    (National University of Singapore)

  • Shibo Xi

    (Institute of Chemical and Engineering Sciences, Agency for Science, Technology and Research (A*STAR))

  • Xiaoxu Zhao

    (National University of Singapore)

  • Danyun Xu

    (Shenzhen University)

  • Haomin Xu

    (National University of Singapore)

  • Wei Yu

    (National University of Singapore)

  • Xiao Hai

    (National University of Singapore)

  • Cheng Chen

    (National University of Singapore)

  • Chuanhao Yao

    (National University of Singapore
    Northwestern Polytechnical University)

  • Hua Bing Tao

    (Nanyang Technological University)

  • Alexander G. R. Howe

    (National University of Singapore)

  • Stephen J. Pennycook

    (National University of Singapore)

  • Bin Liu

    (Nanyang Technological University)

  • Jiong Lu

    (National University of Singapore)

  • Chenliang Su

    (Shenzhen University)

Abstract

Exposing and stabilizing undercoordinated platinum (Pt) sites and therefore optimizing their adsorption to reactive intermediates offers a desirable strategy to develop highly efficient Pt-based electrocatalysts. However, preparation of atomically controllable Pt-based model catalysts to understand the correlation between electronic structure, adsorption energy, and catalytic properties of atomic Pt sites is still challenging. Herein we report the atomically thin two-dimensional PtTe2 nanosheets with well-dispersed single atomic Te vacancies (Te-SAVs) and atomically well-defined undercoordinated Pt sites as a model electrocatalyst. A controlled thermal treatment drives the migration of the Te-SAVs to form thermodynamically stabilized, ordered Te-SAV clusters, which decreases both the density of states of undercoordinated Pt sites around the Fermi level and the interacting orbital volume of Pt sites. As a result, the binding strength of atomically defined Pt active sites to H intermediates is effectively reduced, which renders PtTe2 nanosheets highly active and stable in hydrogen evolution reaction.

Suggested Citation

  • Xinzhe Li & Yiyun Fang & Jun Wang & Hanyan Fang & Shibo Xi & Xiaoxu Zhao & Danyun Xu & Haomin Xu & Wei Yu & Xiao Hai & Cheng Chen & Chuanhao Yao & Hua Bing Tao & Alexander G. R. Howe & Stephen J. Penn, 2021. "Ordered clustering of single atomic Te vacancies in atomically thin PtTe2 promotes hydrogen evolution catalysis," Nature Communications, Nature, vol. 12(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-22681-4
    DOI: 10.1038/s41467-021-22681-4
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    Cited by:

    1. Yinghao Li & Chun-Kuo Peng & Huimin Hu & San-Yuan Chen & Jin-Ho Choi & Yan-Gu Lin & Jong-Min Lee, 2022. "Interstitial boron-triggered electron-deficient Os aerogels for enhanced pH-universal hydrogen evolution," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    2. Zhao, Meng-Jie & Li, Er-Mei & Deng, Ning & Hu, Yingjie & Li, Chao-Xiong & Li, Bing & Li, Fang & Guo, Zhen-Guo & He, Jian-Bo, 2022. "Indirect electrodeposition of a NiMo@Ni(OH)2MoOx composite catalyst for superior hydrogen production in acidic and alkaline electrolytes," Renewable Energy, Elsevier, vol. 191(C), pages 370-379.
    3. Huaning Jiang & Weiwei Yang & Mingquan Xu & Erqing Wang & Yi Wei & Wei Liu & Xiaokang Gu & Lixuan Liu & Qian Chen & Pengbo Zhai & Xiaolong Zou & Pulickel M. Ajayan & Wu Zhou & Yongji Gong, 2022. "Single atom catalysts in Van der Waals gaps," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    4. Jing-Wen Hsueh & Lai-Hsiang Kuo & Po-Han Chen & Wan-Hsin Chen & Chi-Yao Chuang & Chia-Nung Kuo & Chin-Shan Lue & Yu-Ling Lai & Bo-Hong Liu & Chia-Hsin Wang & Yao-Jane Hsu & Chun-Liang Lin & Jyh-Pin Ch, 2024. "Investigating the role of undercoordinated Pt sites at the surface of layered PtTe2 for methanol decomposition," Nature Communications, Nature, vol. 15(1), pages 1-13, December.
    5. Jialun Gu & Lanxi Li & Youneng Xie & Bo Chen & Fubo Tian & Yanju Wang & Jing Zhong & Junda Shen & Jian Lu, 2023. "Turing structuring with multiple nanotwins to engineer efficient and stable catalysts for hydrogen evolution reaction," Nature Communications, Nature, vol. 14(1), pages 1-13, December.

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