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Photocatalytic oxidation of arylalcohols to aromatic aldehydes promoted by hydroxyl radicals over a CoP/CdS photocatalyst in water with hydrogen evolution

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Abstract

Cobalt phosphide (CoP) combined with CdS was employed as a photocatalyst to oxidize arylalcohols into aromatic aldehydes or ketones in water. This was accompanied by the reduction of water, and the quantitative yield of hydrogen evolution was much higher than the chemical equivalent of hydrogen gas. Electron spin resonance spectroscopy and quenching experiments demonstrated that hydroxyl free radicals, originating from water splitting, promoted the oxidation of arylalcohols, while the holes in the valence band of the photocatalyst were reduced by the OH and organic substrates. The overall reaction generates high-value-added organics. This photocatalytic reaction is atom-economical, in accordance with the concept of sustainable development.

Graphical abstract: Photocatalytic oxidation of arylalcohols to aromatic aldehydes promoted by hydroxyl radicals over a CoP/CdS photocatalyst in water with hydrogen evolution

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Publication details

The article was received on 22 Jan 2018, accepted on 14 Mar 2018 and first published on 22 Mar 2018


Article type: Paper
DOI: 10.1039/C8CY00138C
Citation: Catal. Sci. Technol., 2018, Advance Article
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    Photocatalytic oxidation of arylalcohols to aromatic aldehydes promoted by hydroxyl radicals over a CoP/CdS photocatalyst in water with hydrogen evolution

    Y. Xu, L. Zeng, Z. Fu, C. Li, Z. Yang, Y. Chen and W. Fu, Catal. Sci. Technol., 2018, Advance Article , DOI: 10.1039/C8CY00138C

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