Photocatalytic Glycerol Oxidation On AuXCu-Cus@Tio2 Plasmonic Heterostructures

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.

Publication Date

1-1-2018

Publication Title

Journal of Materials Chemistry A

Volume

6

Issue

44

Number of Pages

22005-22012

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1039/c8ta02170h

Socpus ID

85056508418 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85056508418

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