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Photocatalytic Glycerol Oxidation on AuxCu-CuS@TiO2 Plasmonic Heterostructureure

Abstract

Herein, AuxCu alloy nanoparticles (NPs) embedded into TiO2 nanocavity arrays (NCAs) were synthesized by e-Beam deposition and thermal dewetting. The periodically dispersed AuxCu NPs displayed strong ultraviolet-visible light absorption through plasmonic resonance, especially after forming an AuxCu-CuS core-shell heterostructure by sulfurization. When used as a photocatalyst for glycerol oxidation, the AuxCu-CuS heterostructure showed high conversion efficiency (72%) and superb selectivity (66%) for dihydroxyacetone, even under neutral conditions and without an external heating source. The favorable photothermal-enhanced oxidative activity originates from the synergistic core-shell and plasmonic effects in the AuxCu-CuS@TiO2 heterostructure. This work suggests a promising strategy for integrating photothermal effect into the photocatalytic production of valuable organic compounds, therefore boosting solar energy conversion efficiency.

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Publication details

The article was received on 07 Mar 2018, accepted on 01 May 2018 and first published on 01 May 2018


Article type: Paper
DOI: 10.1039/C8TA02170H
Citation: J. Mater. Chem. A, 2018, Accepted Manuscript
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    Photocatalytic Glycerol Oxidation on AuxCu-CuS@TiO2 Plasmonic Heterostructureure

    L. Guo, Q. Sun, K. Marcus, Y. Hao, J. Deng, K. Bi and Y. Yang, J. Mater. Chem. A, 2018, Accepted Manuscript , DOI: 10.1039/C8TA02170H

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