Isolated Electron Trap-Induced Charge Accumulation for Efficient Photocatalytic Hydrogen Production

Wenhuan Huang, Chenyang Su, Chen Zhu, Tingting Bo, Shouwei Zuo, Wei Zhou, Yuanfu Ren, Yanan Zhang, Jing Zhang, Magnus Rueping*, Huabin Zhang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

49 Scopus citations

Abstract

The solar-driven evolution of hydrogen from water using particulate photocatalysts is considered one of the most economical and promising protocols for achieving a stable supply of renewable energy. However, the efficiency of photocatalytic water splitting is far from satisfactory due to the sluggish electron-hole pair separation kinetics. Herein, isolated Mo atoms in a high oxidation state have been incorporated into the lattice of Cd0.5Zn0.5S (CZS@Mo) nanorods, which exhibit photocatalytic hydrogen evolution rate of 11.32 mmol g−1 h−1 (226.4 μmol h−1; catalyst dosage 20 mg). Experimental and theoretical simulation results imply that the highly oxidized Mo species lead to mobile-charge imbalances in CZS and induce the directional photogenerated electrons transfer, resulting in effectively inhibited electron-hole recombination and greatly enhanced photocatalytic efficiency.

Original languageEnglish (US)
Article numbere202304634
JournalAngewandte Chemie - International Edition
Volume62
Issue number25
DOIs
StatePublished - Jun 19 2023

Keywords

  • Electron Pump
  • High-Oxidation State
  • Photocatalysis
  • Single-Atom Catalysts
  • Water Splitting

ASJC Scopus subject areas

  • Catalysis
  • General Chemistry

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