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Direct and indirect Z-scheme heterostructure-coupled photosystem enabling cooperation of CO2 reduction and H2O oxidation

Author

Listed:
  • Ying Wang

    (Fuzhou University
    Qingdao University of Science & Technology)

  • Xiaotong Shang

    (Fuzhou University)

  • Jinni Shen

    (Fuzhou University)

  • Zizhong Zhang

    (Fuzhou University)

  • Debao Wang

    (Qingdao University of Science & Technology)

  • Jinjin Lin

    (Fuzhou University)

  • Jeffrey C. S. Wu

    (National Taiwan University)

  • Xianzhi Fu

    (Fuzhou University)

  • Xuxu Wang

    (Fuzhou University)

  • Can Li

    (Chinese Academy of Sciences)

Abstract

The stoichiometric photocatalytic reaction of CO2 with H2O is one of the great challenges in photocatalysis. Here, we construct a Cu2O-Pt/SiC/IrOx composite by a controlled photodeposition and then an artificial photosynthetic system with Nafion membrane as diaphragm separating reduction and oxidation half-reactions. The artificial system exhibits excellent photocatalytic performance for CO2 reduction to HCOOH and H2O oxidation to O2 under visible light irradiation. The yields of HCOOH and O2 meet almost stoichiometric ratio and are as high as 896.7 and 440.7 μmol g−1 h−1, respectively. The high efficiencies of CO2 reduction and H2O oxidation in the artificial system are attributed to both the direct Z-scheme electronic structure of Cu2O-Pt/SiC/IrOx and the indirect Z-scheme spatially separated reduction and oxidation units, which greatly prolong lifetime of photogenerated electrons and holes and prevent the backward reaction of products. This work provides an effective and feasible strategy to increase the efficiency of artificial photosynthesis.

Suggested Citation

  • Ying Wang & Xiaotong Shang & Jinni Shen & Zizhong Zhang & Debao Wang & Jinjin Lin & Jeffrey C. S. Wu & Xianzhi Fu & Xuxu Wang & Can Li, 2020. "Direct and indirect Z-scheme heterostructure-coupled photosystem enabling cooperation of CO2 reduction and H2O oxidation," Nature Communications, Nature, vol. 11(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-16742-3
    DOI: 10.1038/s41467-020-16742-3
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    Cited by:

    1. Jie Zhou & Jie Li & Liang Kan & Lei Zhang & Qing Huang & Yong Yan & Yifa Chen & Jiang Liu & Shun-Li Li & Ya-Qian Lan, 2022. "Linking oxidative and reductive clusters to prepare crystalline porous catalysts for photocatalytic CO2 reduction with H2O," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    2. Huai Chen & Yangyang Xiong & Jun Li & Jehad Abed & Da Wang & Adrián Pedrazo-Tardajos & Yueping Cao & Yiting Zhang & Ying Wang & Mohsen Shakouri & Qunfeng Xiao & Yongfeng Hu & Sara Bals & Edward H. Sar, 2023. "Epitaxially grown silicon-based single-atom catalyst for visible-light-driven syngas production," Nature Communications, Nature, vol. 14(1), pages 1-11, December.
    3. Yao Chai & Yuehua Kong & Min Lin & Wei Lin & Jinni Shen & Jinlin Long & Rusheng Yuan & Wenxin Dai & Xuxu Wang & Zizhong Zhang, 2023. "Metal to non-metal sites of metallic sulfides switching products from CO to CH4 for photocatalytic CO2 reduction," Nature Communications, Nature, vol. 14(1), pages 1-11, December.

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