Photocatalytic overall water splitting under visible light enabled by a particulate conjugated polymer loaded with palladium and iridium

Bai, Yang and Li, Chao and Liu, Lunjie and Yamaguchi, Yuichi and Bahri, Mounib and Yang, Haofan and Gardner, Adrian and Zwijnenburg, Martijn A. and Browning, Nigel D. and Cowan, Alexander J. and Kudo, Akihiko and Cooper, Andrew I. and Sprick, Reiner Sebastian (2022) Photocatalytic overall water splitting under visible light enabled by a particulate conjugated polymer loaded with palladium and iridium. Angewandte Chemie International Edition, 61 (26). e202201299. ISSN 1521-3773 (https://doi.org/10.1002/anie.202201299)

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Abstract

Polymer photocatalysts have received growing attention in recent years for photocatalytic hydrogen production from water. Most studies report hydrogen production with sacrificial electron donors, which is unsuitable for large-scale hydrogen energy production. Here we show that the palladium/iridium oxide-loaded homopolymer of dibenzo[b,d]thiophene sulfone (P10) facilitates overall water splitting to produce stoichiometric amounts of H2 and O2 for an extended period (>60 hours) after the system stabilized. These results demonstrate that conjugated polymers can act as single component photocatalytic systems for overall water splitting when loaded with suitable co-catalysts, albeit currently with low activities. Transient spectroscopy shows that the IrO2 co-catalyst plays an important role in the generation of the charge separated state required for water splitting, with evidence for fast hole transfer to the co-catalyst.

ORCID iDs

Bai, Yang, Li, Chao, Liu, Lunjie, Yamaguchi, Yuichi, Bahri, Mounib, Yang, Haofan, Gardner, Adrian, Zwijnenburg, Martijn A., Browning, Nigel D., Cowan, Alexander J., Kudo, Akihiko, Cooper, Andrew I. and Sprick, Reiner Sebastian ORCID logoORCID: https://orcid.org/0000-0002-5389-2706;
  • Item type:Article
    ID code:80123
    Dates:
    Date
    Event
    27 June 2022
    Published
    26 April 2022
    Published Online
    30 March 2022
    Accepted
    Subjects:Science > Chemistry
    Department:Faculty of Science > Pure and Applied Chemistry
    Depositing user: Pure Administrator
    Date deposited:07 Apr 2022 10:25
    Last modified:14 Nov 2024 07:10
    URI:https://strathprints.strath.ac.uk/id/eprint/80123
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