Graphene oxide as the passivation layer for CuxO photocatalyst on a plasmonic Au film and the corresponding photoluminescence study

Yun Hsuan Chang; Chih Ming Wang; Yu Kuei Hsu; Yi Hao Pai; Jia Yu Lin; Chu Hsuan Lin

doi:10.1364/OE.23.0A1245

Graphene oxide as the passivation layer for Cu_xO photocatalyst on a plasmonic Au film and the corresponding photoluminescence study

Yun Hsuan Chang, Chih Ming Wang, Yu Kuei Hsu, Yi Hao Pai, Jia Yu Lin, Chu Hsuan Lin

Department of Optics and Photonics

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

6 Scopus citations

Abstract

The contribution of graphene oxide (GO) on photocatalytic effects of Cu_xO on plasmonic Au is investigated. It is found that the H₂ evolution rate from pure water is enhanced 1.4 fold using the visible-active Cu_xO/GO photocatalyst, as compared with Cu_xO without GO. In addition, the intensity of photoluminescence of Cu_xO/GO can be enhanced as much as 2.85 fold as compared with Cu_xO without GO. The enhancement is due to the negative fixed charge in GO, which can passivate the surface of Cu_xO and suppress recombination of minority electrons at the surface. The results from optical characterization in this study can help to prove the proposed mechanism of passivation.

Original language	English
Pages (from-to)	A1245-A1252
Journal	Optics Express
Volume	23
Issue number	19
DOIs	https://doi.org/10.1364/OE.23.0A1245
State	Published - 2015

Access to Document

10.1364/OE.23.0A1245

Cite this

@article{156c35b4bbbf47128e4882b2fc49212c,

title = "Graphene oxide as the passivation layer for CuxO photocatalyst on a plasmonic Au film and the corresponding photoluminescence study",

abstract = "The contribution of graphene oxide (GO) on photocatalytic effects of CuxO on plasmonic Au is investigated. It is found that the H2 evolution rate from pure water is enhanced 1.4 fold using the visible-active CuxO/GO photocatalyst, as compared with CuxO without GO. In addition, the intensity of photoluminescence of CuxO/GO can be enhanced as much as 2.85 fold as compared with CuxO without GO. The enhancement is due to the negative fixed charge in GO, which can passivate the surface of CuxO and suppress recombination of minority electrons at the surface. The results from optical characterization in this study can help to prove the proposed mechanism of passivation.",

author = "Chang, {Yun Hsuan} and Wang, {Chih Ming} and Hsu, {Yu Kuei} and Pai, {Yi Hao} and Lin, {Jia Yu} and Lin, {Chu Hsuan}",

note = "Publisher Copyright: {\textcopyright} 2015 Optical Society of America.",

year = "2015",

doi = "10.1364/OE.23.0A1245",

language = "???core.languages.en_GB???",

volume = "23",

pages = "A1245--A1252",

journal = "Optics Express",

issn = "1094-4087",

number = "19",

}

TY - JOUR

T1 - Graphene oxide as the passivation layer for CuxO photocatalyst on a plasmonic Au film and the corresponding photoluminescence study

AU - Chang, Yun Hsuan

AU - Wang, Chih Ming

AU - Hsu, Yu Kuei

AU - Pai, Yi Hao

AU - Lin, Jia Yu

AU - Lin, Chu Hsuan

PY - 2015

Y1 - 2015

N2 - The contribution of graphene oxide (GO) on photocatalytic effects of CuxO on plasmonic Au is investigated. It is found that the H2 evolution rate from pure water is enhanced 1.4 fold using the visible-active CuxO/GO photocatalyst, as compared with CuxO without GO. In addition, the intensity of photoluminescence of CuxO/GO can be enhanced as much as 2.85 fold as compared with CuxO without GO. The enhancement is due to the negative fixed charge in GO, which can passivate the surface of CuxO and suppress recombination of minority electrons at the surface. The results from optical characterization in this study can help to prove the proposed mechanism of passivation.

AB - The contribution of graphene oxide (GO) on photocatalytic effects of CuxO on plasmonic Au is investigated. It is found that the H2 evolution rate from pure water is enhanced 1.4 fold using the visible-active CuxO/GO photocatalyst, as compared with CuxO without GO. In addition, the intensity of photoluminescence of CuxO/GO can be enhanced as much as 2.85 fold as compared with CuxO without GO. The enhancement is due to the negative fixed charge in GO, which can passivate the surface of CuxO and suppress recombination of minority electrons at the surface. The results from optical characterization in this study can help to prove the proposed mechanism of passivation.

UR - http://www.scopus.com/inward/record.url?scp=84943576252&partnerID=8YFLogxK

U2 - 10.1364/OE.23.0A1245

DO - 10.1364/OE.23.0A1245

M3 - 期刊論文

AN - SCOPUS:84943576252

SN - 1094-4087

VL - 23

SP - A1245-A1252

JO - Optics Express

JF - Optics Express

IS - 19

ER -

Graphene oxide as the passivation layer for CuxO photocatalyst on a plasmonic Au film and the corresponding photoluminescence study

Abstract

Access to Document

Fingerprint

Cite this

Graphene oxide as the passivation layer for Cu_xO photocatalyst on a plasmonic Au film and the corresponding photoluminescence study