A novel composite photocatalyst based on in situ growth of ultrathin tungsten oxide nanowires on graphene oxide sheets

被引:41
作者
Chang, Xueting [1 ]
Dong, Lihua [1 ]
Yin, Yansheng [1 ]
Sun, Shibin [2 ]
机构
[1] Shanghai Maritime Univ, Inst Marine Mat Sci & Engn, Shanghai 201306, Peoples R China
[2] Shanghai Maritime Univ, Logist Engn Coll, Shanghai 201306, Peoples R China
关键词
W18O49; NANORODS; REDUCTION; TIO2; ZNO; NANOPARTICLES; NANOCRYSTALS; SPECTROSCOPY; ABSORPTION; NANOTUBES; OXIDATION;
D O I
10.1039/c3ra41109e
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Graphene oxide sheets were initially prepared by a modified pressurized oxidation method. Through a one-pot solvothermal route, a novel composite photocatalyst based on in situ growth of ultrathin W18O49 nanowires with diameters of 2-3 nm on graphene oxide sheets was then successfully fabricated. The as-prepared graphene oxide sheets and W18O49-reduced graphene oxide composite have been systematically characterized by combined techniques of X-ray diffraction, scanning electron microscopy, transmission electron microscopy, Raman microscopy, X-ray photoelectron spectrometry, and UV-vis diffuse reflectance spectroscopy. Compared to the W18O49 nanoflowers prepared in the absence of graphene oxide sheets, the W18O49-reduced graphene oxide composite exhibited significantly enhanced photocatalytic properties for the decomposition of methyl orange solution and for the growth inhibition of V. natriegens under full spectrum light, which is mainly due to the strong coupling interaction between the W18O49 nanowires and the reduced graphene oxide sheets. The present solvothermal process simultaneously enables the reduction of graphene oxide and the formation of W18O49, making it suitable for the preparation of other graphene-based composites.
引用
收藏
页码:15005 / 15013
页数:9
相关论文
共 74 条
[1]   Pristine simple oxides as visible light driven photocatalysts: Highly efficient decomposition of organic compounds over platinum-loaded tungsten oxide [J].
Abe, Ryu ;
Takami, Hiticishi ;
Murakami, Naoya ;
Ohtani, Bunsho .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2008, 130 (25) :7780-+
[3]   Graphene-based photocatalytic composites [J].
An, Xiaoqiang ;
Yu, Jimmy C. .
RSC ADVANCES, 2011, 1 (08) :1426-1434
[4]   Controlled growth and characterization of tungsten oxide nanowires using thermal evaporation of WO3 powder [J].
Baek, Yunho ;
Yong, Kijung .
JOURNAL OF PHYSICAL CHEMISTRY C, 2007, 111 (03) :1213-1218
[5]   Preparation of graphene by pressurized oxidation and multiplex reduction and its polymer nanocomposites by masterbatch-based melt blending [J].
Bao, Chenlu ;
Song, Lei ;
Xing, Weiyi ;
Yuan, Bihe ;
Wilkie, Charles A. ;
Huang, Jianliu ;
Guo, Yuqiang ;
Hu, Yuan .
JOURNAL OF MATERIALS CHEMISTRY, 2012, 22 (13) :6088-6096
[6]   Structural and morphological analyses of tungsten oxide nanophasic thin films obtained by MOCVD [J].
Barreca, D ;
Bozza, S ;
Carta, G ;
Rossetto, G ;
Tondello, E ;
Zanella, P .
SURFACE SCIENCE, 2003, 532 :439-443
[7]  
Barreca D., 2001, Surface Science Spectra, V8, P258, DOI 10.1116/11.20020801
[8]   Raman Spectroscopy of Graphene Edges [J].
Casiraghi, C. ;
Hartschuh, A. ;
Qian, H. ;
Piscanec, S. ;
Georgi, C. ;
Fasoli, A. ;
Novoselov, K. S. ;
Basko, D. M. ;
Ferrari, A. C. .
NANO LETTERS, 2009, 9 (04) :1433-1441
[9]   Assembly of tungsten oxide nanobundles and their electrochromic properties [J].
Chang, Xueting ;
Sun, Shibin ;
Li, Zhenjiang ;
Xu, Xiao ;
Qiu, Yanyan .
APPLIED SURFACE SCIENCE, 2011, 257 (13) :5726-5730
[10]   The enhanced alcohol-sensing response of ultrathin WO3 nanoplates [J].
Chen, Deliang ;
Hou, Xianxiang ;
Wen, Hejing ;
Wang, Yu ;
Wang, Hailong ;
Li, Xinjian ;
Zhang, Rui ;
Lu, Hongxia ;
Xu, Hongliang ;
Guan, Shaokang ;
Sun, Jing ;
Gao, Lian .
NANOTECHNOLOGY, 2010, 21 (03)