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Twin-induced one-dimensional homojunctions yield high quantum efficiency for solar hydrogen generation

Author

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  • Maochang Liu

    (International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University)

  • Dengwei Jing

    (International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University)

  • Zhaohui Zhou

    (International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University)

  • Liejin Guo

    (International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University)

Abstract

Efficient charge separation is of crucial importance for the improvement of photocatalytic activity for solar hydrogen evolution. Here we report efficient photo-generated charge separation by twin-induced one-dimensional homojunctions with type-II staggered band alignment, using a ternary chalcogenate, i.e. Cd0.5Zn0.5S nanorod as a model material. The quantum efficiency of solar hydrogen evolution over this photocatalyst, without noble metal loading, reaches 62%. Unlike traditional heterojunctions, doping or combination of additional elements are not needed for the formation of this junction, which permits us to tune the band structures of semiconductors to the specific application in a more precise way. Our results highlight the power of forming long-range ordered homojunctions at the nanoscale for photocatalytic and photoelectrochemical applications.

Suggested Citation

  • Maochang Liu & Dengwei Jing & Zhaohui Zhou & Liejin Guo, 2013. "Twin-induced one-dimensional homojunctions yield high quantum efficiency for solar hydrogen generation," Nature Communications, Nature, vol. 4(1), pages 1-8, October.
    • Handle: RePEc:nat:natcom:v:4:y:2013:i:1:d:10.1038_ncomms3278
    DOI: 10.1038/ncomms3278
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    Cited by:

    1. Xu, Shenming & Jiang, Jiangang & Ren, Wenyi & Wang, He & Zhang, Rui & Xie, Yingge & Chen, Yubin, 2020. "Construction of ZnO/CdS three-dimensional hierarchical photoelectrode for improved photoelectrochemical performance," Renewable Energy, Elsevier, vol. 153(C), pages 241-248.
    2. Liang Wu & Qian Wang & Tao-Tao Zhuang & Guo-Zhen Zhang & Yi Li & Hui-Hui Li & Feng-Jia Fan & Shu-Hong Yu, 2022. "A library of polytypic copper-based quaternary sulfide nanocrystals enables efficient solar-to-hydrogen conversion," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    3. Guo, Liejin & Chen, Yubin & Su, Jinzhan & Liu, Maochang & Liu, Ya, 2019. "Obstacles of solar-powered photocatalytic water splitting for hydrogen production: A perspective from energy flow and mass flow," Energy, Elsevier, vol. 172(C), pages 1079-1086.
    4. Zeng, Zilong & Jing, Dengwei & Guo, Liejin, 2021. "Efficient hydrogen production in a spotlight reactor with plate photocatalyst of TiO2/NiO heterojunction supported on nickel foam," Energy, Elsevier, vol. 228(C).
    5. Zhu, Rongshu & Tian, Fei & Che, Sainan & Cao, Gang & Ouyang, Feng, 2017. "The photocatalytic performance of modified ZnIn2S4 with graphene and La for hydrogen generation under visible light," Renewable Energy, Elsevier, vol. 113(C), pages 1503-1514.

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