Visible light photocatalytic properties of novel molybdenum treated carbon nanotube/titania composites

被引:3
作者
Zhang, Feng-Jun [2 ]
Oh, Won-Chun [1 ]
机构
[1] Anhui Univ Architecture, Sch Mat & Chem Engn, Hefei 230022, Anhui, Peoples R China
[2] Hanseo Univ, Dept Adv Mat & Engn, Seosan 356706, Chungnam Do, South Korea
关键词
Molybdenum; carbon nanotube; titania; photocatalytic; visible light; ACTIVATED CARBON; TIO2; NANOTUBES; DEGRADATION; REACTIVITY; PARTICLES; ORANGE;
D O I
10.1007/s12034-011-0115-3
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Two types of molybdenum carbon nanotubes and molybdenum treated carbon nanotubes/titania composites were prepared using a sol gel method. These composites were characterized comprehensively by the Brauer-Emett-Teller (BET) surface area, scanning electron microscopy (SEM), energy dispersive X-ray (EDX) analysis, X-ray diffraction (XRD), transmission electron microscopy (TEM) and UV-vis absorption spectroscopy. It was found that the photocatalytic degradation of a methylene blue solution could be attributed to the combined effects caused by the photo-degradation of titania, the electron assistance of carbon nanotube network, and the enhancement of molybdenum. The proposed redox mechanism of the photodegradation of methylene blue on Mo-CNT/TiO2 composites is suggested.
引用
收藏
页码:543 / 549
页数:7
相关论文
共 28 条
[1]   Visible-light photocatalysis in nitrogen-doped titanium oxides [J].
Asahi, R ;
Morikawa, T ;
Ohwaki, T ;
Aoki, K ;
Taga, Y .
SCIENCE, 2001, 293 (5528) :269-271
[2]   Synthesis of photocatalytic TiO2 nanoparticles:: optimization of the preparation conditions [J].
Bessekhouad, Y ;
Robert, D ;
Weber, JV .
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2003, 157 (01) :47-53
[3]   Photocatalytic degradation of orange II by TiO2 catalysts supported on adsorbents [J].
Bhattacharyya, A ;
Kawi, S ;
Ray, MB .
CATALYSIS TODAY, 2004, 98 (03) :431-439
[4]   Photoinduced reactivity of titanium dioxide [J].
Carp, O ;
Huisman, CL ;
Reller, A .
PROGRESS IN SOLID STATE CHEMISTRY, 2004, 32 (1-2) :33-177
[5]   Titanium dioxide nanomaterials: Synthesis, properties, modifications, and applications [J].
Chen, Xiaobo ;
Mao, Samuel S. .
CHEMICAL REVIEWS, 2007, 107 (07) :2891-2959
[6]   THE ROLE OF METAL-ION DOPANTS IN QUANTUM-SIZED TIO2 - CORRELATION BETWEEN PHOTOREACTIVITY AND CHARGE-CARRIER RECOMBINATION DYNAMICS [J].
CHOI, WY ;
TERMIN, A ;
HOFFMANN, MR .
JOURNAL OF PHYSICAL CHEMISTRY, 1994, 98 (51) :13669-13679
[7]   Photoelectrocatalytic and photocatalytic disinfection of E-coli suspensions by titanium dioxide [J].
Christensen, PA ;
Curtis, TP ;
Egerton, TA ;
Kosa, SAM ;
Tinlin, JR .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2003, 41 (04) :371-386
[8]   Nanotubes as nanoprobes in scanning probe microscopy [J].
Dai, HJ ;
Hafner, JH ;
Rinzler, AG ;
Colbert, DT ;
Smalley, RE .
NATURE, 1996, 384 (6605) :147-150
[9]   Influence of Mn2+ and Mo6+ dopants on the phase transformations of TiO2 lattice and its photo catalytic activity under solar illumination [J].
Devi, L. Gomathi ;
Kumar, S. Girish ;
Murthy, B. Narasimha ;
Kottam, Nagaraju .
CATALYSIS COMMUNICATIONS, 2009, 10 (06) :794-798
[10]   Preparation of polycrystalline TiO2 photocatalysts impregnated with various transition metal ions:: Characterization and photocatalytic activity for the degradation of 4-nitrophenol [J].
Di Paola, A ;
Marcì, G ;
Palmisano, L ;
Schiavello, M ;
Uosaki, K ;
Ikeda, S ;
Ohtani, B .
JOURNAL OF PHYSICAL CHEMISTRY B, 2002, 106 (03) :637-645