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The elusive photocatalytic water splitting reaction using sunlight on suspended nanoparticles: is there a way forward?

Idriss, H; (2020) The elusive photocatalytic water splitting reaction using sunlight on suspended nanoparticles: is there a way forward? Catalysis Science & Technology , 10 (2) pp. 304-310. 10.1039/c9cy01818b. Green open access

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Abstract

For many decades hydrogen production by photocatalytic methods has been pursued over a variety of semiconductors with probably over a thousand formulations of powder catalysts in many structures and compositions. Yet, with the exception of a few reports, water splitting to molecular hydrogen and oxygen has remained elusive. The only reproducible results are those involving other additives to water: electron donors or acceptors yielding either hydrogen or oxygen, but not both. The consequence of this is a system unrelated to water splitting but simply driven by the organic or inorganic redox potential. One may argue that thermodynamic limitations indicate that an inorganic semiconductor with a band gap within the spectrum of sunlight, and that is stable in water, cannot split water. Otherwise, it would not have existed on earth

Type: Article
Title: The elusive photocatalytic water splitting reaction using sunlight on suspended nanoparticles: is there a way forward?
Open access status: An open access version is available from UCL Discovery
DOI: 10.1039/c9cy01818b
Publisher version: https://doi.org/10.1039/c9cy01818b
Language: English
Additional information: This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. https://creativecommons.org/licenses/by-nc/3.0/
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
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
URI: https://discovery.ucl.ac.uk/id/eprint/10094520
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