A one-pot method for the preparation of graphene-Bi2MoO6 hybrid photocatalysts that are responsive to visible-light and have excellent photocatalytic activity in the degradation of organic pollutants

被引：128
作者：
Wang, Peifang [1 ]
Ao, Yanhui [1 ]
Wang, Chao [1 ]
Hou, Jun [1 ]
Qian, Jin [1 ]
机构：
[1] Hohai Univ, Coll Environm, Key Lab Integrated Regulat & Resource Dev Shallow, Minist Educ, Nanjing 210098, Peoples R China
来源：
CARBON | 2012年 / 50卷 / 14期
基金：
中国国家自然科学基金;
关键词：
OXIDE SHEETS; BI2MOO6; PHOTODEGRADATION; ENHANCEMENT; COMPOSITE; MECHANISM;
D O I：
10.1016/j.carbon.2012.06.063
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Graphene-Bi2MoO6 (G-Bi2MoO6) hybrid photocatalysts were prepared by a simple one-step process in which the reduction of graphene oxide (GO) and the growth of Bi2MoO6 crystals occurred simultaneously. The material was characterized by X-ray diffraction, scanning electron microscopy, nitrogen adsorption-desorption isotherms, X-ray photoelectron spectroscopy, UV-vis diffuse reflectance spectroscopy and Raman spectroscopy. The photocatalytic activity was investigated by the degradation of reactive brilliant red dye X-3B. An increase in photocatalytic activity was observed for G-Bi2MoO6 hybrids compared with pure Bi2MoO6 under visible light. This improvement was attributed to the following two reasons: increased migration efficiency of photo-induced electrons and increased adsorption activity for dye molecules. A study of the effect of the amount of graphene on the photocatalytic activity showed that there was an optimum amount of 2.5% (initial GO weight). (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：5256 / 5264
页数：9
相关论文
共 38 条
[1]   Photodegradation of Graphene Oxide Sheets by TiO2 Nanoparticles after a Photocatalytic Reduction [J].
Akhavan, O. ;
Abdolahad, M. ;
Esfandiar, A. ;
Mohatashamifar, M. .
JOURNAL OF PHYSICAL CHEMISTRY C, 2010, 114 (30) :12955-12959
[2]   Understanding the Enhancement in Photoelectrochemical Properties of Photocatalytically Prepared TiO2-Reduced Graphene Oxide Composite [J].
Bell, Nicholas J. ;
Ng, Yun Hau ;
Du, Aijun ;
Coster, Hans ;
Smith, Sean C. ;
Amal, Rose .
JOURNAL OF PHYSICAL CHEMISTRY C, 2011, 115 (13) :6004-6009
[3]   Simple solvothermal routes to synthesize nanocrystalline Bi2MoO6 photocatalysts with different morphologies [J].
Bi, Jinhong ;
Wu, Ling ;
Li, He ;
Li, Zhaohui ;
Wang, Xuxu ;
Fu, Xianzhi .
ACTA MATERIALIA, 2007, 55 (14) :4699-4705
[4]   Microwave-assisted solution-phase preparation of flower-like Bi2WO6 and its visible-light-driven photocatalytic properties [J].
Cao, Xiao-Feng ;
Zhang, Lei ;
Chen, Xue-Tai ;
Xue, Zi-Ling .
CRYSTENGCOMM, 2011, 13 (01) :306-311
[5]   Enhanced photocatalytic activity of TiO2/SiO2 by the influence of Cu-doping under reducing calcination atmosphere [J].
Chand, Rumi ;
Obuchi, Eiko ;
Katoh, Katsumi ;
Luitel, Hom Nath ;
Nakano, Katsuyuki .
CATALYSIS COMMUNICATIONS, 2011, 13 (01) :49-53
[6]  
Cruz A.M., 2010, J. Mol. Catal. A Chem, V320, P85, DOI DOI 10.1016/J.MOLCATA.2010.01.0081:CAS:528:DC%2BC3CXISFENS74%3D
[7]   Synthesis and enhanced photocatalytic performance of graphene-Bi2WO6 composite [J].
Gao, Erping ;
Wang, Wenzhong ;
Shang, Meng ;
Xu, Jiehui .
PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2011, 13 (07) :2887-2893
[8]   ENVIRONMENTAL APPLICATIONS OF SEMICONDUCTOR PHOTOCATALYSIS [J].
HOFFMANN, MR ;
MARTIN, ST ;
CHOI, WY ;
BAHNEMANN, DW .
CHEMICAL REVIEWS, 1995, 95 (01) :69-96
[9]   Ultrasonic Spray Pyrolysis Synthesis of Porous Bi2WO6 Microspheres and Their Visible-Light-Induced Photocatalytic Removal of NO [J].
Huang, Yu ;
Ai, Zhihui ;
Ho, Wingkei ;
Chen, Meijuan ;
Lee, Shuncheng .
JOURNAL OF PHYSICAL CHEMISTRY C, 2010, 114 (14) :6342-6349
[10]   TiO2 nanoparticles assembled on graphene oxide nanosheets with high photocatalytic activity for removal of pollutants [J].
Jiang, Guodong ;
Lin, Zhifen ;
Chen, Chao ;
Zhu, Lihua ;
Chang, Qing ;
Wang, Nan ;
Wei, Wei ;
Tang, Heqing .
CARBON, 2011, 49 (08) :2693-2701
1234