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Issue 20, 2019
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Plasmonic oxidation of glycerol using AuPd/TiO2 catalysts

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AuPd nanoparticles supported on P25 TiO2 (AuPd/TiO2) were prepared by a facile sol-immobilisation method and investigated for surface plasmon-assisted glycerol oxidation under base-free conditions. The AuPd/TiO2 samples were characterized by UV-vis spectroscopy and transmission electron microscopy. The sol-immobilisation method readily permitted the Au : Pd molar ratio to be changed over a wide range whilst keeping the mean particle size of the AuPd nanoparticles at 3 nm. Visible light irradiation during the reaction has a beneficial effect on the conversion of glycerol with the most marked effect being observed with gold-rich catalysts and the increase of conversion on light irradiation increases linearly with the gold content of the nanoparticles. The reaction selectivity is also affected by the plasmon-assisted oxidation and glycolic acid, not observed during the dark reactions, was observed for all illuminated reactions due to the enhanced activity of these catalysts.

Graphical abstract: Plasmonic oxidation of glycerol using AuPd/TiO2 catalysts

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Publication details

The article was received on 16 Jul 2019, accepted on 13 Sep 2019 and first published on 13 Sep 2019

Article type: Paper
DOI: 10.1039/C9CY01409H
Catal. Sci. Technol., 2019,9, 5686-5691

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    Plasmonic oxidation of glycerol using AuPd/TiO2 catalysts

    L. Abis, N. Dimitritatos, M. Sankar, S. J. Freakley and G. J. Hutchings, Catal. Sci. Technol., 2019, 9, 5686
    DOI: 10.1039/C9CY01409H

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