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Issue 44, 2018
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Photocatalytic glycerol oxidation on AuxCu–CuS@TiO2 plasmonic heterostructures

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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 photothermally 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 the photothermal effect into the photocatalytic production of valuable organic compounds, therefore boosting solar energy conversion efficiency.

Graphical abstract: Photocatalytic glycerol oxidation on AuxCu–CuS@TiO2 plasmonic heterostructures

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Supplementary files

Article information


Submitted
07 Mar 2018
Accepted
01 May 2018
First published
01 May 2018

J. Mater. Chem. A, 2018,6, 22005-22012
Article type
Paper

Photocatalytic glycerol oxidation on AuxCu–CuS@TiO2 plasmonic heterostructures

L. Guo, Q. Sun, K. Marcus, Y. Hao, J. Deng, K. Bi and Y. Yang, J. Mater. Chem. A, 2018, 6, 22005
DOI: 10.1039/C8TA02170H

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