Sol–gel synthesis of Au/N–TiO2 composite for photocatalytic reduction of Cr(VI)

Xinjuan Liu; Likun Pan; Tian Lv; Zhuo Sun; Changqing Sun

doi:10.1039/C2RA01107G

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Sol–gel synthesis of Au/N–TiO₂ composite for photocatalytic reduction of Cr(vi)

Xinjuan Liu,^a Likun Pan,*^a Tian Lv,^a Zhuo Sun^a and Changqing Sun^b

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* Corresponding authors

^a Engineering Research Center for Nanophotonics & Advanced Instrument, Ministry of Education, Department of Physics, East China Normal University, Shanghai, China
E-mail: lkpan@phy.ecnu.edu.cn
Fax: +86 21 62234321
Tel: +86 21 62234132

^b School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, Singapore

Abstract

Au/N–TiO₂ composites are successfully synthesized via a modified sol–gel method and their photocatalytic performance in reduction of Cr(VI) is investigated. Au/N–TiO₂ composites exhibit an enhanced photocatalytic performance in the reduction of Cr(VI) with a maximum reduction rate of 90% under visible light irradiation as compared with pure TiO₂ (34%) and N–TiO₂ (80%) due to the increase of light absorption intensity and range as well as the reduction of electron–hole pair recombination in TiO₂ with the incorporation of N and Au.

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Article information

DOI: https://doi.org/10.1039/C2RA01107G
Article type: Paper
Submitted: 16 Nov 2011
Accepted: 30 Jan 2012
First published: 07 Mar 2012

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RSC Adv., 2012,2, 3823-3827

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Sol–gel synthesis of Au/N–TiO₂ composite for photocatalytic reduction of Cr(VI)

X. Liu, L. Pan, T. Lv, Z. Sun and C. Sun, RSC Adv., 2012, 2, 3823 DOI: 10.1039/C2RA01107G

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