Hetero-phase dendritic elemental phosphorus for visible light photocatalytic hydrogen generation

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Chunxiao Wu
  • Ruixue Zhu
  • Yuxi Liu
  • Jiguang Deng
  • Hongxing Dai
  • Lin Jing
  • Jimmy C. Yu

Detail(s)

Original languageEnglish
Article number121428
Journal / PublicationApplied Catalysis B: Environmental
Volume312
Online published20 Apr 2022
Publication statusPublished - 5 Sep 2022

Abstract

We demonstrate a carefully tailored elemental red phosphorus (red P) for a record-high photocatalytic hydrogen evolution rate of 1280 μmol g−1 h−1. This performance has even surpassed some of the established compound photocatalysts. Systematic studies reveal that the bismuth-catalyzed selective growth of the preferential crystal phases of red P leads to the formation of fibrous and Hittorf's phases at distinctive sites within the same photocatalyst particle of dendritic morphology: nanobranches of fibrous phase and main stems of Hittorf's phase. As each crystal phase possesses unique band energy potential, the intimate heterojunction between the two phases affords an effective built-in driving force for the efficient transportation of photoexcited charge carriers with suppressed charge trapping and recombination. The strategy in crystal phase engineering of red P as well as the understanding of its charge transportation properties in this work provides new insights into developing favorable elemental P-based materials for various photocatalytic applications.

Research Area(s)

  • Elemental photocatalyst, Hetero-phase, Photocatalytic hydrogen evolution, Red phosphorus

Citation Format(s)

Hetero-phase dendritic elemental phosphorus for visible light photocatalytic hydrogen generation. / Wu, Chunxiao; Zhu, Ruixue; Teoh, Wey Yang; Liu, Yuxi; Deng, Jiguang; Dai, Hongxing; Jing, Lin; Ng, Yun Hau; Yu, Jimmy C.

In: Applied Catalysis B: Environmental, Vol. 312, 121428, 05.09.2022.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review