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Journal of Nanomaterials
Volume 2017, Article ID 3475248, 12 pages
Research Article

Preparation of a Leaf-Like BiVO4-Reduced Graphene Oxide Composite and Its Photocatalytic Activity

1Key Laboratory of Three Gorges Reservoir Region’s Eco-Environment, Ministry of Education, Chongqing University, No. 174 Shazhengjie, Shapingba, Chongqing 400045, China
2Luzhou Laojiao Company Limited, No. 9 Nanguang Road, Longmatan District, Luzhou City, Sichuan Province 646006, China
3Chongqing Key Laboratory of Catalysis and Functional Organic Molecules, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China
4National Center for International Research of Low-Carbon and Green Buildings, Chongqing University, Chongqing 40004, China

Correspondence should be addressed to Xuan Xu; nc.ude.uqc@nauxux

Received 25 October 2016; Revised 1 January 2017; Accepted 26 February 2017; Published 3 April 2017

Academic Editor: Qin Hu

Copyright © 2017 Shimin Xiong et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


We prepared a unique leaf-like BiVO4-reduced graphene oxide (BiVO4-rGO) composite with prominent adsorption performance and photocatalytic ability by a single-step method. Multiple characterization results showed that the leaf-like BiVO4 with average diameter of about 5 um was well dispersed on the reduced graphene oxide sheet, which enhanced the transportation of photogenerated electrons into BiVO4, thereby leading to efficient separation of photogenerated carriers in the coupled graphene-nanocomposite system. The characterization and experiment results also indicated that the outstanding adsorption ability of such composite was closely associated with the rough surface of the leaf-like BiVO4 and doped rGO. The surface photocurrent spectroscopy and transient photocurrent density measurement results demonstrated that the doped rGO enhanced separation efficiency and transfer rate of photogenerated charges. As a result, the BiVO4-rGO exhibited higher photocatalytic capacity toward the degradation of rhodamine B dye under visible-light irradiation compared with pure BiVO4 and P25.