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2017 Fiscal Year Final Research Report

Au(core)-metal chalcogenide(shell) half-cut nanoegg-type plasmonic photocatalyst for solar-to-chemical transformation

Research Project

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Project/Area Number 15K05654
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Inorganic industrial materials
Research InstitutionKindai University

Principal Investigator

TADA Hiroaki  近畿大学, 理工学部, 教授 (60298990)

Research Collaborator NAYA Sin-ichi  近畿大学, 有害物質処理室, 技術主任
Project Period (FY) 2015-04-01 – 2018-03-31
Keywords光触媒
Outline of Final Research Achievements

A key material for artificial photosynthesis including water splitting is heteronanostructured (HNS) photocatalysts. The photocatalytic activity depends on the geometry and dimension, and the quality of junctions between the components. Here we present a half-cut Au(core)-CdS(shell) (HC-Au@CdS) nanoegg as a new HNS plasmonic photocatalyst for water splitting. UV-light irradiation of Au nanoparticle (NP)-loaded ZnO (Au/ZnO) at 50oC induces the selective deposition of hexagonal CdS on the Au surface of Au/ZnO with an epitaxial (EPI) relation of CdS{0001}/Au{111}. The subsequent selective dissolution of the ZnO support at room temperature yields HC-Au@CdS with the Au NP size and EPI junction (#) retained. Red-light irradiation (excitation wavelength = 640 nm) of HC-Au@#CdS gives rise to continuous stoichiometric water splitting with an unprecedentedly high external quantum yield of 0.24%.

Free Research Field

光電気化学

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Published: 2019-03-29  

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