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Superior visible light hydrogen evolution of Janus bilayer junctions via atomic-level charge flow steering

Author

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  • Jie Li

    (Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, Institute of Environmental Chemistry, College of Chemistry, Central China Normal University
    Institute of Nanoscience and Nanotechnology, College of Physical Science and Technology, Central China Normal University)

  • Guangming Zhan

    (Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, Institute of Environmental Chemistry, College of Chemistry, Central China Normal University)

  • Ying Yu

    (Institute of Nanoscience and Nanotechnology, College of Physical Science and Technology, Central China Normal University)

  • Lizhi Zhang

    (Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, Institute of Environmental Chemistry, College of Chemistry, Central China Normal University)

Abstract

Although photocatalytic hydrogen evolution (PHE) is ideal for solar-to-fuel conversion, it remains challenging to construct a highly efficient PHE system by steering the charge flow in a precise manner. Here we tackle this challenge by assembling 1T MoS2 monolayers selectively and chemically onto (Bi12O17) end-faces of Bi12O17Cl2 monolayers to craft two-dimensional (2D) Janus (Cl2)-(Bi12O17)-(MoS2) bilayer junctions, a new 2D motif different from van der Waals heterostructure. Electrons and holes from visible light-irradiated Bi12O17Cl2 are directionally separated by the internal electric field to (Bi12O17) and (Cl2) end-faces, respectively. The separated electrons can further migrate to MoS2 via Bi–S bonds formed between (Bi12O17) and MoS2 monolayers. This atomic-level directional charge separation endows the Janus bilayers with ultralong carrier lifetime of 3,446 ns and hence a superior visible-light PHE rate of 33 mmol h−1 g−1. Our delineated Janus bilayer junctions on the basis of the oriented assembly of monolayers presents a new design concept to effectively steer the charge flow for PHE.

Suggested Citation

  • Jie Li & Guangming Zhan & Ying Yu & Lizhi Zhang, 2016. "Superior visible light hydrogen evolution of Janus bilayer junctions via atomic-level charge flow steering," Nature Communications, Nature, vol. 7(1), pages 1-9, September.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms11480
    DOI: 10.1038/ncomms11480
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    Cited by:

    1. Xuezhen Feng & Renji Zheng & Caiyan Gao & Wenfei Wei & Jiangguli Peng & Ranhao Wang & Songhe Yang & Wensong Zou & Xiaoyong Wu & Yongfei Ji & Hong Chen, 2022. "Unlocking bimetallic active sites via a desalination strategy for photocatalytic reduction of atmospheric carbon dioxide," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    2. Li, Zhenzi & Wang, Shijie & Wu, Jiaxing & Zhou, Wei, 2022. "Recent progress in defective TiO2 photocatalysts for energy and environmental applications," Renewable and Sustainable Energy Reviews, Elsevier, vol. 156(C).
    3. Zhishan Luo & Xiaoyuan Ye & Shijia Zhang & Sikang Xue & Can Yang & Yidong Hou & Wandong Xing & Rong Yu & Jie Sun & Zhiyang Yu & Xinchen Wang, 2022. "Unveiling the charge transfer dynamics steered by built-in electric fields in BiOBr photocatalysts," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    4. Zhou, Weiming & Wu, Yiting & Huang, Hongqiang & Zhang, Mingxin & Sun, Xuhui & Wang, Zequn & Zhao, Fei & zhang, Houyu & Xie, Tengfeng & An, Meng & Wang, Liwei & Yuan, Zhanhui, 2022. "2D lamellar membrane with nanochannels synthesized by bottom-up assembly approach for the superior photocatalytic hydrogen evolution," Renewable and Sustainable Energy Reviews, Elsevier, vol. 168(C).
    5. Yan Guo & Qixin Zhou & Jun Nan & Wenxin Shi & Fuyi Cui & Yongfa Zhu, 2022. "Perylenetetracarboxylic acid nanosheets with internal electric fields and anisotropic charge migration for photocatalytic hydrogen evolution," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    6. Yanbiao Shi & Jie Li & Chengliang Mao & Song Liu & Xiaobing Wang & Xiufan Liu & Shengxi Zhao & Xiao Liu & Yanqiang Huang & Lizhi Zhang, 2021. "Van Der Waals gap-rich BiOCl atomic layers realizing efficient, pure-water CO2-to-CO photocatalysis," Nature Communications, Nature, vol. 12(1), pages 1-10, December.

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