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Title: A new bimetallic plasmonic photocatalyst consisting of gold(core)-copper(shell) nanoparticle and titanium(IV) oxide support

Abstract

Ultrathin Cu layers (∼2 atomic layers) have been selectively formed on the Au surfaces of Au nanoparticle-loaded rutile TiO{sub 2} (Au@Cu/TiO{sub 2}) by a deposition precipitation-photodeposition technique. Cyclic voltammetry and photochronopotentiometry measurements indicate that the reaction proceeds via the underpotential deposition. The ultrathin Cu shell drastically increases the activity of Au/TiO{sub 2} for the selective oxidation of amines to the corresponding aldehydes under visible-light irradiation (λ > 430 nm). Photochronoamperometry measurements strongly suggest that the striking Cu shell effect stems from the enhancement of the charge separation in the localized surface plasmon resonance-excited Au/TiO{sub 2}.

Authors:
 [1];  [2];  [1];  [3]
  1. Department of Applied Chemistry, School of Science and Engineering, Kinki University, 3-4-1, Kowakae, Higashi-Osaka, Osaka 577-8502 (Japan)
  2. Environmental Research Laboratory, Kinki University, 3-4-1, Kowakae, Higashi-Osaka, Osaka 577-8502 (Japan)
  3. (Japan)
Publication Date:
OSTI Identifier:
22499267
Resource Type:
Journal Article
Journal Name:
APL Materials
Additional Journal Information:
Journal Volume: 3; Journal Issue: 10; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 2166-532X
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALDEHYDES; AMINES; COPPER; DEPOSITION; GOLD; IRRADIATION; LAYERS; OXIDATION; RESONANCE; RUTILE; SURFACES; TITANIUM; TITANIUM OXIDES; VOLTAMETRY

Citation Formats

Sato, Yuichi, Naya, Shin-ichi, Tada, Hiroaki, E-mail: h-tada@apch.kindai.ac.jp, and Environmental Research Laboratory, Kinki University, 3-4-1, Kowakae, Higashi-Osaka, Osaka 577-8502. A new bimetallic plasmonic photocatalyst consisting of gold(core)-copper(shell) nanoparticle and titanium(IV) oxide support. United States: N. p., 2015. Web. doi:10.1063/1.4923098.
Sato, Yuichi, Naya, Shin-ichi, Tada, Hiroaki, E-mail: h-tada@apch.kindai.ac.jp, & Environmental Research Laboratory, Kinki University, 3-4-1, Kowakae, Higashi-Osaka, Osaka 577-8502. A new bimetallic plasmonic photocatalyst consisting of gold(core)-copper(shell) nanoparticle and titanium(IV) oxide support. United States. doi:10.1063/1.4923098.
Sato, Yuichi, Naya, Shin-ichi, Tada, Hiroaki, E-mail: h-tada@apch.kindai.ac.jp, and Environmental Research Laboratory, Kinki University, 3-4-1, Kowakae, Higashi-Osaka, Osaka 577-8502. Thu . "A new bimetallic plasmonic photocatalyst consisting of gold(core)-copper(shell) nanoparticle and titanium(IV) oxide support". United States. doi:10.1063/1.4923098.
@article{osti_22499267,
title = {A new bimetallic plasmonic photocatalyst consisting of gold(core)-copper(shell) nanoparticle and titanium(IV) oxide support},
author = {Sato, Yuichi and Naya, Shin-ichi and Tada, Hiroaki, E-mail: h-tada@apch.kindai.ac.jp and Environmental Research Laboratory, Kinki University, 3-4-1, Kowakae, Higashi-Osaka, Osaka 577-8502},
abstractNote = {Ultrathin Cu layers (∼2 atomic layers) have been selectively formed on the Au surfaces of Au nanoparticle-loaded rutile TiO{sub 2} (Au@Cu/TiO{sub 2}) by a deposition precipitation-photodeposition technique. Cyclic voltammetry and photochronopotentiometry measurements indicate that the reaction proceeds via the underpotential deposition. The ultrathin Cu shell drastically increases the activity of Au/TiO{sub 2} for the selective oxidation of amines to the corresponding aldehydes under visible-light irradiation (λ > 430 nm). Photochronoamperometry measurements strongly suggest that the striking Cu shell effect stems from the enhancement of the charge separation in the localized surface plasmon resonance-excited Au/TiO{sub 2}.},
doi = {10.1063/1.4923098},
journal = {APL Materials},
issn = {2166-532X},
number = 10,
volume = 3,
place = {United States},
year = {2015},
month = {10}
}