Visible-Light-Driven Plasmonic Photocatalysis Enhanced by Charge Accumulation

Kun Che Kao; Hiroyasu Nishi; Tetsu Tatsuma

doi:10.1002/cnma.201900187

Visible-Light-Driven Plasmonic Photocatalysis Enhanced by Charge Accumulation

Kun Che Kao, Hiroyasu Nishi, Tetsu Tatsuma^*

^*Corresponding author for this work

Department of Chemistry

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

9 Scopus citations

Abstract

Plasmon-induced charge separation (PICS) at the interface between a plasmonic material and semiconductor is employed to drive photocatalytic reactions for conversion and storage of solar energy. Most of the conventional photoelectrodes based on PICS have an n-M type structure with an interface between n-type semiconductor (typically TiO₂) and plasmonic metal (typically Au) nanoparticles. Here we develop n-M-p type photoelectrodes by coating the TiO₂/Au photoelectrode with Ni(OH)₂ or CrO_x, which can collect and store positive charges. Both of the photoelectrodes show efficient PICS under visible light and accumulate positive charges released from resonant Au nanoparticles. The accumulated charges can be used for oxidation of organic species such as ethanol in the dark. The TiO₂/AuNP/Ni(OH)₂ photoelectrode exhibits an oxygen evolution ability under visible light with a certain bias voltage.

Original language	English
Pages (from-to)	1021-1027
Number of pages	7
Journal	ChemNanoMat
Volume	5
Issue number	8
DOIs	https://doi.org/10.1002/cnma.201900187
State	Published - 2019/08

Keywords

charge accumulation
chromium oxide
gold
nickel hydroxide
plamonic phtocatalysis

ASJC Scopus subject areas

Biomaterials
Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Materials Chemistry

UN SDGs

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

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10.1002/cnma.201900187

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@article{d7907b56b5d04c46aa1c16a01f4fa18e,

title = "Visible-Light-Driven Plasmonic Photocatalysis Enhanced by Charge Accumulation",

abstract = "Plasmon-induced charge separation (PICS) at the interface between a plasmonic material and semiconductor is employed to drive photocatalytic reactions for conversion and storage of solar energy. Most of the conventional photoelectrodes based on PICS have an n-M type structure with an interface between n-type semiconductor (typically TiO2) and plasmonic metal (typically Au) nanoparticles. Here we develop n-M-p type photoelectrodes by coating the TiO2/Au photoelectrode with Ni(OH)2 or CrOx, which can collect and store positive charges. Both of the photoelectrodes show efficient PICS under visible light and accumulate positive charges released from resonant Au nanoparticles. The accumulated charges can be used for oxidation of organic species such as ethanol in the dark. The TiO2/AuNP/Ni(OH)2 photoelectrode exhibits an oxygen evolution ability under visible light with a certain bias voltage.",

keywords = "charge accumulation, chromium oxide, gold, nickel hydroxide, plamonic phtocatalysis",

author = "Kao, {Kun Che} and Hiroyasu Nishi and Tetsu Tatsuma",

note = "Publisher Copyright: {\textcopyright} 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim",

year = "2019",

month = aug,

doi = "10.1002/cnma.201900187",

language = "英語",

volume = "5",

pages = "1021--1027",

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publisher = "Wiley-VCH Verlag",

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TY - JOUR

T1 - Visible-Light-Driven Plasmonic Photocatalysis Enhanced by Charge Accumulation

AU - Kao, Kun Che

AU - Nishi, Hiroyasu

AU - Tatsuma, Tetsu

PY - 2019/8

Y1 - 2019/8

N2 - Plasmon-induced charge separation (PICS) at the interface between a plasmonic material and semiconductor is employed to drive photocatalytic reactions for conversion and storage of solar energy. Most of the conventional photoelectrodes based on PICS have an n-M type structure with an interface between n-type semiconductor (typically TiO2) and plasmonic metal (typically Au) nanoparticles. Here we develop n-M-p type photoelectrodes by coating the TiO2/Au photoelectrode with Ni(OH)2 or CrOx, which can collect and store positive charges. Both of the photoelectrodes show efficient PICS under visible light and accumulate positive charges released from resonant Au nanoparticles. The accumulated charges can be used for oxidation of organic species such as ethanol in the dark. The TiO2/AuNP/Ni(OH)2 photoelectrode exhibits an oxygen evolution ability under visible light with a certain bias voltage.

AB - Plasmon-induced charge separation (PICS) at the interface between a plasmonic material and semiconductor is employed to drive photocatalytic reactions for conversion and storage of solar energy. Most of the conventional photoelectrodes based on PICS have an n-M type structure with an interface between n-type semiconductor (typically TiO2) and plasmonic metal (typically Au) nanoparticles. Here we develop n-M-p type photoelectrodes by coating the TiO2/Au photoelectrode with Ni(OH)2 or CrOx, which can collect and store positive charges. Both of the photoelectrodes show efficient PICS under visible light and accumulate positive charges released from resonant Au nanoparticles. The accumulated charges can be used for oxidation of organic species such as ethanol in the dark. The TiO2/AuNP/Ni(OH)2 photoelectrode exhibits an oxygen evolution ability under visible light with a certain bias voltage.

KW - charge accumulation

KW - chromium oxide

KW - gold

KW - nickel hydroxide

KW - plamonic phtocatalysis

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U2 - 10.1002/cnma.201900187

DO - 10.1002/cnma.201900187

M3 - 学術論文

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VL - 5

SP - 1021

EP - 1027

JO - ChemNanoMat

JF - ChemNanoMat

IS - 8

ER -

Visible-Light-Driven Plasmonic Photocatalysis Enhanced by Charge Accumulation

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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