Photocatalytic glycerol oxidation on AuxCu-CuS@TiO2 plasmonic heterostructures

被引：48

作者：

Guo, L. ^{[1
,2
,3
]}

Sun, Q. ^{[1
]}

Marcus, K. ^{[3
]}

Hao, Y. ^{[2
]}

Deng, J. ^{[4
]}

Bi, K. ^{[2
]}

Yang, Y. ^{[3
]}

机构：

[1] Chinese Acad Sci, Beijing Inst Nanoenergy & Nanosyst, Univ Chinese Acad Sci, Beijing 100083, Peoples R China

[2] Beijing Univ Posts & Telecommun, State Key Lab Informat Photon & Opt Commun, Sch Sci, Beijing 100876, Peoples R China

[3] Univ Cent Florida, NanoSci Technol Ctr, Dept Mat Sci & Engn, 4000 Cent Florida Blvd, Orlando, FL 32816 USA

[4] Donghua Univ, Coll Mech Engn, Shanghai 201620, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2018年 / 6卷 / 44期

基金：

中国国家自然科学基金;

关键词：

AU; DRIVEN; WATER; NANOPARTICLES; REDUCTION; CATALYSTS; ALLOY; CO; PD;

D O I：

10.1039/c8ta02170h

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：22005 / 22012

页数：8

共 32 条

[1] Biofuels (alcohols and biodiesel) applications as fuels for internal combustion engines [J].