Photocorrosion of plasmonic enhanced CuxO photocatalyst

Chih Ming Wang; Chun Yu Wang

doi:10.1117/1.JNP.8.084095

Photocorrosion of plasmonic enhanced Cu_xO photocatalyst

Chih Ming Wang, Chun Yu Wang

Department of Optics and Photonics

Research output: Contribution to journal › Article › peer-review

17 Scopus citations

Abstract

The photocatalytic water splitting using Cu_xO film on metallic structures under visible light illumination is investigated. A plasmonic enhanced layer is applied for high efficient light harvest and to form a heterojunction to prolong the lifetime of the photogenerated electronhole pairs. Although Cu_xO is a potential photocatalyst with high efficiency, it suffers from serious photocorrosion. The photocorrosion mechanism of p-type Cu_xO has been investigated using x-ray photoelectron spectroscopy. Through analyzing the composition of Cu_xO during a photocatalytic water splitting reaction, it is found that the photocorrosion of Cu₂O on Pt is caused by the reduction of Cu₂O to Cu, while the photocorrosion of Cu₂O on Au is caused by the oxidation of Cu ₂O to CuO.

Original language	English
Article number	084095
Journal	Journal of Nanophotonics
Volume	8
Issue number	1
DOIs	https://doi.org/10.1117/1.JNP.8.084095
State	Published - Jan 2014

Keywords

photocatalyst
photocorrosion
plasmonic

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1117/1.JNP.8.084095

Cite this

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title = "Photocorrosion of plasmonic enhanced CuxO photocatalyst",

abstract = "The photocatalytic water splitting using CuxO film on metallic structures under visible light illumination is investigated. A plasmonic enhanced layer is applied for high efficient light harvest and to form a heterojunction to prolong the lifetime of the photogenerated electronhole pairs. Although CuxO is a potential photocatalyst with high efficiency, it suffers from serious photocorrosion. The photocorrosion mechanism of p-type CuxO has been investigated using x-ray photoelectron spectroscopy. Through analyzing the composition of CuxO during a photocatalytic water splitting reaction, it is found that the photocorrosion of Cu2O on Pt is caused by the reduction of Cu2O to Cu, while the photocorrosion of Cu2O on Au is caused by the oxidation of Cu 2O to CuO.",

keywords = "photocatalyst, photocorrosion, plasmonic",

author = "Wang, {Chih Ming} and Wang, {Chun Yu}",

note = "Funding Information: The authors are grateful for the financial support of this research received from the National Science Council of Taiwan, China, under Grant Nos. NSC 101-2221-E-259-024-MY3 and 102CFA1100055.",

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AU - Wang, Chih Ming

AU - Wang, Chun Yu

N1 - Funding Information: The authors are grateful for the financial support of this research received from the National Science Council of Taiwan, China, under Grant Nos. NSC 101-2221-E-259-024-MY3 and 102CFA1100055.

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N2 - The photocatalytic water splitting using CuxO film on metallic structures under visible light illumination is investigated. A plasmonic enhanced layer is applied for high efficient light harvest and to form a heterojunction to prolong the lifetime of the photogenerated electronhole pairs. Although CuxO is a potential photocatalyst with high efficiency, it suffers from serious photocorrosion. The photocorrosion mechanism of p-type CuxO has been investigated using x-ray photoelectron spectroscopy. Through analyzing the composition of CuxO during a photocatalytic water splitting reaction, it is found that the photocorrosion of Cu2O on Pt is caused by the reduction of Cu2O to Cu, while the photocorrosion of Cu2O on Au is caused by the oxidation of Cu 2O to CuO.

AB - The photocatalytic water splitting using CuxO film on metallic structures under visible light illumination is investigated. A plasmonic enhanced layer is applied for high efficient light harvest and to form a heterojunction to prolong the lifetime of the photogenerated electronhole pairs. Although CuxO is a potential photocatalyst with high efficiency, it suffers from serious photocorrosion. The photocorrosion mechanism of p-type CuxO has been investigated using x-ray photoelectron spectroscopy. Through analyzing the composition of CuxO during a photocatalytic water splitting reaction, it is found that the photocorrosion of Cu2O on Pt is caused by the reduction of Cu2O to Cu, while the photocorrosion of Cu2O on Au is caused by the oxidation of Cu 2O to CuO.

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