Phase transformation and enhanced photocatalytic activity of S-doped Ag2O/TiO2 heterostructured nanobelts

W. J. Zhou; Y. H. Leng; D. M. Hou; H. D. Li; L. G. Li; G. Q. Li; H. Liu; S. W. Chen

doi:10.1039/C3NR06565K

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Phase transformation and enhanced photocatalytic activity of S-doped Ag₂O/TiO₂ heterostructured nanobelts†

W. J. Zhou,*^a Y. H. Leng,^b D. M. Hou,^c H. D. Li,^b L. G. Li,^a G. Q. Li,^c H. Liu*^b and S. W. Chen^ad

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* Corresponding authors

^a New Energy Research Institute, School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Center, Guangzhou 510006, China
E-mail: eszhouwj@scut.edu.cn

^b State Key Laboratory of Crystal Materials, Center of Bio & Micro/Nano Functional Materials, Shandong University, 27 Shandanan Road, Jinan 250100, China
E-mail: hongliu@sdu.edu.cn

^c School of Materials Science and Engineering, South China University of Technology, Wushan Road, Tianhe, Guangzhou 510006, China

^d Department of Chemistry and Biochemistry, University of California, 1156 High Street, Santa Cruz, California 95064, USA

Abstract

Ag₂O/TiO₂ nanobelt heterostructures have been found to possess high ultraviolet photocatalytic activity, but a poor cycling performance. After a S-doping treatment, the obtained Ag₂O/Ag₂S₂O₇/TiO₂ heterostructured nanobelts exhibited an enhanced and stable photocatalytic activity under both ultraviolet and visible light irradiation, which was exemplified by photo-degradation of organic pollutants and photocurrent response measurements. Meanwhile, the crystal structure and phase transformation of Ag₂O, Ag₂S₂O₇ and Ag₂S were studied by XRD and XPS measurements.

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Article information

DOI: https://doi.org/10.1039/C3NR06565K
Article type: Paper
Submitted: 11 Dec 2013
Accepted: 23 Jan 2014
First published: 28 Jan 2014

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Nanoscale, 2014,6, 4698-4704

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Phase transformation and enhanced photocatalytic activity of S-doped Ag₂O/TiO₂ heterostructured nanobelts

W. J. Zhou, Y. H. Leng, D. M. Hou, H. D. Li, L. G. Li, G. Q. Li, H. Liu and S. W. Chen, Nanoscale, 2014, 6, 4698 DOI: 10.1039/C3NR06565K

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