Dual-phase metal nitrides as highly efficient co-catalysts for photocatalytic hydrogen evolution

Siqi Liu, Wandi Kuang, Xiangjian Meng, Weiliang Qi, Samira Adimi, Haichuan Guo, Xuyun Guo, Erum Pervaiz, Ye Zhu, Dongfeng Xue, Minghui Yang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

Abstract

Low solar-to-fuel conversion in conventional semiconductor-based photocatalysts limits their commercial applications. Searching for highly efficient cost-effective co-catalysts is desirable for the development of artificial photosynthesis systems. In this work, we report a simple yet efficient electrostatic self-assembly process to synthesize one-dimensional Co4N-WNx-CdS composites for visible light-driven hydrogen evolution in pure water. Biphasic transition metal nitrides Co4N-WNx with high conductivity and enriched active sites leads to multi-level electrons transfer and lower over-potential for hydrogen production. Co4N-WNx-CdS composite, with optimized wt%, exhibits the highest rate of photocatalytic hydrogen evolution (14.42 mmol g−1h−1) under vacuum condition. This rate is ~ 8 times higher than that of the Pt-CdS composite (1.78 mmol g−1h−1).

Original languageEnglish
Article number129116
JournalChemical Engineering Journal
Volume416
DOIs
Publication statusPublished - 15 Jul 2021

Keywords

  • Dual phase nitride
  • Hydrogen evolution
  • Photocatalysis
  • Pt-replacement
  • Transition metal nitride

ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

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