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)
89 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

Funding

We gratefully acknowledge the vital contribution of Prof. Zeev Gross and Dr. Atif Mahammed. This research was carried out in the framework of the Russell Berrie Nanotechnology Institute (RBNI) and the Nancy and Stephen Grand Technion Energy Program (GTEP). The project received funding from the European Union's Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No 722591, and the Israeli Ministry of National Infrastructures, Energy and Water Resources (grant number 218–11-044). The authors acknowledge the generous funding support from the Fonds der Chemischen Industrie (FCI), the COST Action CM1202 PERSPECT-H2O, and the German Research Foundation (DFG) project number 364549901-TRR234 (CataLight, B4 and Z2). We gratefully acknowledge the vital contribution of Prof. Zeev Gross and Dr. Atif Mahammed. This research was carried out in the framework of the Russell Berrie Nanotechnology Institute (RBNI) and the Nancy and Stephen Grand Technion Energy Program (GTEP). The project received funding from the European Union's Horizon 2020 research and innovation programme under the Marie Skłodowska‐Curie grant agreement No 722591, and the Israeli Ministry of National Infrastructures, Energy and Water Resources (grant number 218–11‐044). The authors acknowledge the generous funding support from the Fonds der Chemischen Industrie (FCI), the COST Action CM1202 PERSPECT‐HO, and the German Research Foundation (DFG) project number 364549901‐TRR234 (CataLight, B4 and Z2). 2

Keywords

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

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