Nano Research

, Volume 10, Issue 9, pp 2988–2997 | Cite as

Topotactic reduction of layered double hydroxides for atomically thick two-dimensional non-noble-metal alloy

  • Pengsong Li
  • Qixian Xie
  • Lirong Zheng
  • Guang Feng
  • Yingjie Li
  • Zhao Cai
  • Yongmin Bi
  • Yaping Li
  • Yun Kuang
  • Xiaoming Sun
  • Xue Duan
Research Article


Layered double hydroxides (LDHs) have been widely used as catalysts owing to their tunable structure and atomic dispersion of high-valence metal ions; however, limited tunability of electronic structure and valence states have hindered further improvement in their catalytic performance. Herein, we reduced ultrathin LDH precursors in situ and topotactically converted them to atomically thick (~2 nm) two-dimensional (2D) multi-metallic, single crystalline alloy nanosheets with highly tunable metallic compositions. The as-obtained alloy nanosheets not only maintained the vertically aligned ultrathin 2D structure, but also inherited the atomic dispersion of the minor metallic compositions of the LDH precursors, even though the atomic percentage was higher than 20%, which is far beyond the reported percentages for single-atom dispersions (usually less than 0.1%). Besides, surface engineering of the alloy nanosheets can finely tune the surface electronic structure for catalytic applications. Such in situ topotactic conversion strategy has introduced a novel approach for atomically dispersed alloy nanostructures and reinforced the synthetic methodology for ultrathin 2D metal-based catalysts.


atomic thickness two-dimensional (2D) nanosheets non-noble-metal alloy atomic dispersion catalysis 


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This work was supported by the National Natural Science Foundation of China, the National Key Research and Development Program of China (No. 2016YFF0204402), the Program for Changjiang Scholars and Innovative Research Team in the University, the Fundamental Research Funds for the Central Universities, and the Long Term Subsidy Mechanism from the Ministry of Finance and the Ministry of Education of PRC.

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Topotactic reduction of layered double hydroxides for atomically thick two-dimensional non-noble-metal alloy


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Copyright information

© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2017

Authors and Affiliations

  • Pengsong Li
    • 1
  • Qixian Xie
    • 1
  • Lirong Zheng
    • 4
  • Guang Feng
    • 1
  • Yingjie Li
    • 1
  • Zhao Cai
    • 1
  • Yongmin Bi
    • 1
  • Yaping Li
    • 1
  • Yun Kuang
    • 1
  • Xiaoming Sun
    • 1
    • 2
    • 3
  • Xue Duan
    • 1
  1. 1.State Key Laboratory of Chemical Resource EngineeringBeijing University of Chemical TechnologyBeijingChina
  2. 2.College of EnergyBeijing University of Chemical TechnologyBeijingChina
  3. 3.Beijing Advanced Innovation Centre for Soft Matter Science and EngineeringBeijing University of Chemical TechnologyBeijingChina
  4. 4.Institute of High Energy PhysicsChinese Academy of SciencesBeijingChina

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