Bai, Yang;
Li, Chao;
Liu, Lunjie;
Yamaguchi, Yuichi;
Bahri, Mounib;
Yang, Haofan;
Gardner, Adrian;
... Sprick, Reiner Sebastian; + view all
(2022)
Photocatalytic overall water splitting under visible light enabled by a particulate conjugated polymer loaded with iridium.
Angewandte Chemie International Edition
, 61
(26)
, Article e202201299. 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.
Type: | Article |
---|---|
Title: | Photocatalytic overall water splitting under visible light enabled by a particulate conjugated polymer loaded with iridium |
Open access status: | An open access version is available from UCL Discovery |
DOI: | 10.1002/anie.202201299 |
Publisher version: | https://doi.org/10.1002/anie.202201299 |
Language: | English |
Additional information: | Copyright © 2022 The Authors. This is an open access article under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
Keywords: | water splitting, conjugated polymers, photocatalysis, hydrogen production, co-catalysts |
UCL classification: | UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry UCL > Provost and Vice Provost Offices > UCL BEAMS UCL |
URI: | https://discovery.ucl.ac.uk/id/eprint/10146528 |
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