A General Strategy for Engineering Single-Metal Sites on 3D Porous N, P Co-Doped Ti3C2TXMXene

Wei Peng, Jiuhui Han, Ying Rui Lu, Min Luo, Ting Shan Chan, Ming Peng, Yongwen Tan

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


Two-dimensional (2D) MXenes have been developed to stabilize single atoms via various methods, such as vacancy reduction and heteroatom-mediated interactions. However, anchoring single atoms on 3D porous MXenes to further increase catalytic active sites and thus construct electrocatalysts with high activity and stability remains unexplored. Here, we reported a general synthetic strategy for engineering single-metal sites on 3D porous N, P codoped Ti3C2TXnanosheets. Through a "gelation-and-pyrolysis" process, a series of atomically dispersed metal catalysts (Pt, Ir, Ru, Pd, and Au) supported by N, P codoped Ti3C2TXnanosheets with 3D porous structure can be obtained and serve as efficient catalysts for the electrochemical hydrogen evolution reaction (HER). As a result of the favorable electronic and geometric structure of N(O), P-coordinated metal atoms optimizing catalytic intermediates adsorption and 3D porous structure exposing the active surface sites and facilitating charge/mass transfer, the as-synthesized Pt SA-PNPM catalyst shows ∼20-fold higher activity than the commercial Pt/C catalyst for electrochemical HER over a wide pH range.

Original languageEnglish
Pages (from-to)4116-4125
Number of pages10
JournalACS Nano
Issue number3
Publication statusPublished - 2022 Mar 22


  • 3D
  • catalysts
  • hydrogen evolution reaction
  • N
  • P codoped TiCT
  • porous
  • single atom

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)
  • Physics and Astronomy(all)


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