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Issue 3, 2018
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Visible light-driven selective hydrogenation of unsaturated aromatics in an aqueous solution by direct photocatalysis of Au nanoparticles

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Abstract

Selective hydrogenation of various chemical bonds, such as C[double bond, length as m-dash]C, C[triple bond, length as m-dash]C, C[double bond, length as m-dash]O, N[double bond, length as m-dash]O, and C[double bond, length as m-dash]N, is efficiently driven by visible light over a supported gold nanoparticle (AuNP) photocatalyst under mild reaction conditions. The reaction system exhibits high substituent tolerance and tunable selectivity by light wavelength. Density functional theory (DFT) calculations demonstrated a strong chemisorption between the reactant molecule and metal resulting in hybridized orbitals. It is proposed that direct photoexcitation between hybridized orbitals is the main driving force of the hydrogenation reaction. The hydrogenation pathway is investigated by the isotope tracking technique. We revealed the cooperation of water and formic acid (FA) as a hydrogen source and the hydrogenation route through Au–H species on the AuNP surface.

Graphical abstract: Visible light-driven selective hydrogenation of unsaturated aromatics in an aqueous solution by direct photocatalysis of Au nanoparticles

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Publication details

The article was received on 08 Nov 2017, accepted on 12 Dec 2017 and first published on 12 Dec 2017


Article type: Paper
DOI: 10.1039/C7CY02291C
Citation: Catal. Sci. Technol., 2018,8, 726-734
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    Visible light-driven selective hydrogenation of unsaturated aromatics in an aqueous solution by direct photocatalysis of Au nanoparticles

    Y. Huang, Z. Liu, G. Gao, Q. Xiao, W. Martens, A. Du, S. Sarina, C. Guo and H. Zhu, Catal. Sci. Technol., 2018, 8, 726
    DOI: 10.1039/C7CY02291C

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