Enhanced photocatalytic activity of La-doped AgNbO3 under visible light irradiation

Guoqiang Li; Tetsuya Kako; Defa Wang; Zhigang Zou; Jinhua Ye

doi:10.1039/B810126D

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Enhanced photocatalytic activity of La-doped AgNbO₃ under visible light irradiation†

Guoqiang Li,^abc Tetsuya Kako,^b Defa Wang,^b Zhigang Zou^ac and Jinhua Ye*^ab

Author affiliations

* Corresponding authors

^a Department of Materials Science and Engineering, Nanjing University, Nanjing, PR China

^b Photocatalytic Materials Center (PCMC), National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki, Japan
E-mail: jinhua.ye@nims.go.jp
Fax: +81 29 859 2301
Tel: +81 29 859 2646

^c Ecomaterials and Renewable Energy Research Center (ERERC), Department of Physics, Nanjing University, Nanjing, PR China

Abstract

Using a solid-state-reaction method, La-doped AgNbO₃ samples of Ag_1−xLa_xNbO₃ were synthesized and their photocatalytic activities were evaluated from gaseous 2-propanol decomposition under visible light irradiation. The photocatalytic activity and the surface area were increased by La doping, but the crystal structure and light absorption property did not change. The photocatalytic activity of Ag_1−xLa_xNbO₃ was significantly improved over that of AgNbO₃. The Ag_0.88La_0.12NbO₃ sample displayed the highest photocatalytic activity: it was more than 12-fold higher than that of AgNbO₃.

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Supplementary files

Additional XRD patterns, XPS spectra and SEM and TEMimages PDF (763K)

Article information

DOI: https://doi.org/10.1039/B810126D
Article type: Paper
Submitted: 16 Jun 2008
Accepted: 24 Nov 2008
First published: 12 Feb 2009

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Dalton Trans., 2009, 2423-2427

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Enhanced photocatalytic activity of La-doped AgNbO₃ under visible light irradiation

G. Li, T. Kako, D. Wang, Z. Zou and J. Ye, Dalton Trans., 2009, 2423 DOI: 10.1039/B810126D

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Dalton Transactions