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Science China Chemistry

, Volume 61, Issue 12, pp 1572–1580 | Cite as

Surface etching induced ultrathin sandwich structure realizing enhanced photocatalytic activity

  • Bo Yang
  • Wentuan Bi
  • Yangyang Wan
  • Xiaogang Li
  • Mingcan Huang
  • Ruilin Yuan
  • Huanxin Ju
  • Wangsheng Chu
  • Xiaojun Wu
  • Linghui He
  • Changzheng Wu
  • Yi Xie
Articles
  • 61 Downloads

Abstract

Photocatalytic conversion efficiency is limited by serious charge carrier recombination. Efficient carrier separation is usually achieved by elegantly-designed multi-component structures connected by directional electric field. Herein, we developed a two-dimensional (2D) sandwich structure, as a new photocatalytic system, to realize high-efficiency carrier separation. This strategy integrated multifunction into a single structure for the first time, which successfully introduces a stable built-in electric field, realizing high-effective carrier separation. Besides, the carrier concentration is dramatically increased due to dimensional confinement. Benefiting from above synergic advantages, 2D sandwich photocatalyst achieves the highest nitrogen fixation rate (435 μmol g−1 h−1) in inorganic solid photocatalysts under visible light irradiation. We anticipate that 2D sandwich photocatalyst holds promises for the application and expansion of 2D materials in photocatalysis research.

Keywords

two-dimensional materials photocatalysis sandwich structure surface modification nitrogen fixation 

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Notes

Acknowledgements

This work was supported by the National Basic Research Program of China (2015CB932302), the National Natural Science Foundation of China (U1432133, 11321503, 21701164), the National Young Top-Notch Talent Support Program, the Chinese Academy of Sciences (XDB01020300), the Fok Ying-Tong Education Foundation (141042), the Fundamental Research Funds for the Central Universities (WK2060190027, WK2060190058). We would like to thank beamline BL14W1 (Shanghai Synchrotron Radiation Facility) and the Catalysis and Surface Science Endstation (National Synchrotron Radiation Laboratory) for providing the beam time.

Supplementary material

11426_2018_9314_MOESM1_ESM.docx (6.3 mb)
Surface Etching Induced Ultrathin Sandwich Structure Realizing Enhanced Photocatalytic Activity

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Copyright information

© Science China Press and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Bo Yang
    • 1
  • Wentuan Bi
    • 1
  • Yangyang Wan
    • 1
    • 2
  • Xiaogang Li
    • 1
  • Mingcan Huang
    • 1
  • Ruilin Yuan
    • 1
  • Huanxin Ju
    • 3
  • Wangsheng Chu
    • 3
  • Xiaojun Wu
    • 1
    • 2
  • Linghui He
    • 1
  • Changzheng Wu
    • 1
  • Yi Xie
    • 1
  1. 1.Hefei National Laboratory for Physical Sciences at the Microscale, Collaborative Innovation Centre of Chemistry for Energy Materials (iChEM), CAS Key Laboratory of Mechanical Behavior and Design of Materials (LMBD), and Department of Modern MechanicsUniversity of Science & Technology of ChinaHefeiChina
  2. 2.CAS Key Laboratory of Materials for Energy Conversion, CAS Center for Excellence in Nanoscience, Synergetic Innovation of Quantum Information & Quantum Technology, and Department of Materials Science and EngineeringUniversity of Science &Technology of ChinaHefeiChina
  3. 3.National Synchrotron Radiation LaboratoryUniversity of Science and Technology of ChinaHefeiChina

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