Issue 10, 2013
From the journal:

Nanoscale

TiO2 coated Au/Ag nanorods with enhanced photocatalytic activity under visible light irradiation†

Na Zhou,ab   Lakshminarayana Polavarapu,ab   Nengyue Gao,a   Yanlin Pan,ab   Peiyan Yuan,ab   Qing Wangbc  and  Qing-Hua Xu*ab  

* Corresponding authors

a Department of Chemistry, National University of Singapore, Singapore 117543
E-mail: chmxqh@nus.edu.sg

b NUSNNI-Nanocore, National University of Singapore, Singapore 117576

c Department of Materials Science and Engineering, National University of Singapore, Singapore 117576

Abstract

A facile method was used to prepare uniform Au NR/TiO2 and Au/Ag NR/TiO2 core–shell composite nanoparticles. Au/Ag NR/TiO2 nanoparticles were found to display significantly enhanced visible light photo-catalytic activity compared to Au NR/TiO2 and the commercially available TiO2 nanoparticles. The enhancement mechanism was ascribed to injection of hot electrons of photo-excited Au/Ag NRs to TiO2, which was confirmed by 633 nm laser induced reduction of silver ions on the surface of Au/Ag NR/TiO2 composite nanoparticles.

Graphical abstract: TiO2 coated Au/Ag nanorods with enhanced photocatalytic activity under visible light irradiation

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Article information

DOI
https://doi.org/10.1039/C3NR00517H
Article type
Paper
Submitted
29 Jan 2013
Accepted
06 Mar 2013
First published
12 Mar 2013

Nanoscale, 2013,5, 4236-4241

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TiO2 coated Au/Ag nanorods with enhanced photocatalytic activity under visible light irradiation

N. Zhou, L. Polavarapu, N. Gao, Y. Pan, P. Yuan, Q. Wang and Q. Xu, Nanoscale, 2013, 5, 4236 DOI: 10.1039/C3NR00517H

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