Plasmonic Ag-decorated Cu2O nanowires for boosting photoelectrochemical CO2 reduction to multi-carbon products

Yanfang Zhang; Qingmei Wang; Keke Wang; Yang Liu; Luwei Zou; Yu Zhou; Min Liu; Xiaoqing Qiu; Wenzhang Li; Jie Li

doi:10.1039/D2CC03167A

Plasmonic Ag-decorated Cu₂O nanowires for boosting photoelectrochemical CO₂ reduction to multi-carbon products†

Yanfang Zhang,‡^a Qingmei Wang,‡^a Keke Wang,^a Yang Liu,^a Luwei Zou,^b Yu Zhou,^b Min Liu,

^b Xiaoqing Qiu,

^a Wenzhang Li

*^ac and Jie Li*^a

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* Corresponding authors

^a School of Chemistry and Chemical Engineering, Central South University, Changsha, China
E-mail: liwenzhang@csu.edu.cn, lijieliu@csu.edu.cn

^b School of Physics and Electronics, Central South University, Changsha 410083, China

^c Hunan Provincial Key Laboratory of Chemical Power Sources, Central South University, Changsha, China

Abstract

The generation of multi-carbon products on the Cu₂O photocathode remains a great challenge. Herein, effective charge separation and surface catalytic reaction are achieved for photoelectrochemical CO₂ reduction through plasmon metal (Ag) decoration on Cu₂O nanowires. The Cu₂O/Ag composite photocathode achieves a 47.7% faradaic efficiency for CH₃COOH and the generation rate is 212.7 μmol cm⁻² h⁻¹ under illumination, which is about five times that in dark (44.4 μmol cm⁻² h⁻¹) at −0.7 V vs. RHE.

Chemical Communications

Plasmonic Ag-decorated Cu₂O nanowires for boosting photoelectrochemical CO₂ reduction to multi-carbon products†

Abstract

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Plasmonic Ag-decorated Cu₂O nanowires for boosting photoelectrochemical CO₂ reduction to multi-carbon products

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