Molecular Metallocorrole–Nanorod Photocatalytic System for Sustainable Hydrogen Production

Kaituo Dong, Trung Anh Le, Yifat Nakibli, Alexander Schleusener, Maria Wächtler, Lilac Amirav*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

7 Citations (Scopus)
64 Downloads (Pure)

Abstract

Solar-driven photocatalytic generation of hydrogen from water is a potential source of clean and renewable fuel. Yet systems that are sufficiently stable and efficient for practical use have not been realized. Here, nanorod photocatalysts that have proven record activity for the water reduction half reaction were successfully combined with molecular metallocorroles suitable for catalyzing the accompanying oxidation reactions. Utilization of OH/⋅OH redox species as charge transfer shuttle between freely mixed metallocorroles and rods resulted in quantum efficiency that peaked as high as 17 % for hydrogen production from water in the absence of sacrificial hole scavengers. While typically each sacrificial scavenger is able to extract but a single hole, here the molecular metallocorrole catalysts were found to successfully handle nearly 300,000 holes during their lifespan. The implications of the new system on the prospects of realizing practical overall water splitting and direct solar-to-fuel energy conversion were discussed.

Original languageEnglish
Article numbere202200804
JournalChemSusChem
Volume15
Issue number17
DOIs
Publication statusPublished - 7 Sept 2022
MoE publication typeA1 Journal article-refereed

Keywords

  • molecular catalysts
  • nanorods
  • photocatalysis
  • solar hydrogen
  • water splitting

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