Liu, Lunjie, Gao, Mei-Yan, Yang, Haofan, Wang, Xiaoyan, Li, Xiaobo and Cooper, Andrew I 
ORCID: 0000-0003-0201-1021
(2021)
Linear Conjugated Polymers for Solar-Driven Hydrogen Peroxide Production: The Importance of Catalyst Stability.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 143 (46).
pp. 19287-19293.
Abstract
Hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) is one of the most important industrial oxidants. In principle, photocatalytic H<sub>2</sub>O<sub>2</sub> synthesis from oxygen and H<sub>2</sub>O using sunlight could provide a cleaner alternative route to the current anthraquinone process. Recently, conjugated organic materials have been studied as photocatalysts for solar fuels synthesis because they offer synthetic tunability over a large chemical space. Here, we used high-throughput experiments to discover a linear conjugated polymer, poly(3-4-ethynylphenyl)ethynyl)pyridine (DE7), which exhibits efficient photocatalytic H<sub>2</sub>O<sub>2</sub> production from H<sub>2</sub>O and O<sub>2</sub> under visible light illumination for periods of up to 10 h or so. The apparent quantum yield was 8.7% at 420 nm. Mechanistic investigations showed that the H<sub>2</sub>O<sub>2</sub> was produced via the photoinduced stepwise reduction of O<sub>2</sub>. At longer photolysis times, however, this catalyst decomposed, suggesting a need to focus the photostability of organic photocatalysts, as well as the initial catalytic production rates.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | 7 Affordable and Clean Energy |
| Divisions: | Faculty of Science and Engineering > School of Physical Sciences |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 20 Jan 2022 10:29 |
| Last Modified: | 17 Mar 2024 13:07 |
| DOI: | 10.1021/jacs.1c09979 |
| Open Access URL: | https://doi.org/10.1021/jacs.1c09979 |
| Related URLs: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3147252 |
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