Synergic effect of the TiO2-CeO2 nanoconjugate system on the band-gap for visible light photocatalysis

被引：43
作者：
Contreras-Garcia, M. E. [1 ]
Lorena Garcia-Benjume, M. [1 ]
Macias-Andres, Victor I. [1 ]
Barajas-Ledesma, E. [2 ]
Medina-Flores, A. [1 ]
Espitia-Cabrera, M. I. [3 ]
机构：
[1] Univ Michoacana, Inst Invest Met, Morelia 58060, Michoacan, Mexico
[2] Univ La Cienega Estado Michoacan Ocampo, Sahuayo 59000, Michoacan, Mexico
[3] Univ Michoacana, Fac Ingn Quim, Morelia 58060, Michoacan, Mexico
来源：
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS | 2014年 / 183卷
关键词：
TiO2-CeO2; Optic band gap; Photocatalyst; Electrophoretic deposition; Nanostructured films; TITANIA SOL; DEGRADATION; CERIA; MECHANISM; CATALYSTS; WATER; RAMAN;
D O I：
10.1016/j.mseb.2014.01.007
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The TiO2-CeO2 photocatalytic system in films is proposed here, in order to obtain photocatalytic systems that can be excited by solar light. The films were obtained through the electrophoretic deposition (EPD) of TiO2-CeO2 gel on sputtered Ti Corning glass substrates. The synergic effect of CeO2 in TiO2 films was analyzed as a function of the optical band gap reduction at different concentrations (1, 5, 10, and 15 mol%). The effect of two thermal treatments was also evaluated. The lowest band gap value was obtained for the sample with 5 mol% ceria that was thermally treated at 700 degrees C. The nanostructured films were characterized by Raman spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), high angle annular dark field (HAADF), high resolution transmission electron microscopy (HRTEM), and atomic force microscopy (AFM). The nanocomposites were formed by TiO2 and CeO2 nanoparticles in the anatase and fluorite type phases, respectively. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：78 / 85
页数：8
相关论文
共 39 条
[1]   Morphological, structural and electrochemical analysis of sputter-deposited ceria and titania coatings for MCFC application [J].
Albin, Valerie ;
Mendoza, Leonardo ;
Goux, Aurelie ;
Ringuede, Armelle ;
Billard, Alain ;
Briois, Pascal ;
Cassir, Michel .
JOURNAL OF POWER SOURCES, 2006, 160 (02) :821-826
[2]   Structural and optical investigation of gadolinia-doped ceria powders prepared by polymer complex solution method [J].
Antic, Zeljka ;
Krsmanovic, Radenka M. ;
Marinovic-Cincovic, Milena ;
Mitric, Miodrag ;
Dramicanin, Miroslav D. .
INTERNATIONAL JOURNAL OF MATERIALS RESEARCH, 2012, 103 (07) :884-888
[3]   Biocide Activity of TiO2 Nanostructured Films [J].
Barajas-Ledesma, E. ;
Garcia-Benjume, M. L. ;
Espitia-Cabrera, I. ;
Bravo-Patino, A. ;
Contreras-Garcia, M. E. .
JOURNAL OF NANO RESEARCH, 2010, 9 :17-24
[4]   Columnar CeO2 nanostructures for sensor application [J].
Barreca, Davide ;
Gasparotto, Alberto ;
Maccato, Chiara ;
Maragno, Cinzia ;
Tondello, Eugenio ;
Comini, Elisabetta ;
Sberveglieri, Giorgio .
NANOTECHNOLOGY, 2007, 18 (12)
[5]   Synthesis, characterization and photocatalytic activity of different metal-doped titania systems [J].
Colmenares, J. C. ;
Aramendia, M. A. ;
Marinas, A. ;
Marinas, J. M. ;
Urbano, F. J. .
APPLIED CATALYSIS A-GENERAL, 2006, 306 (120-127) :120-127
[6]  
Corma A., 2004, NAT MAT, V3
[7]  
De Lasa H. I., 2005, PHOTOCATAL REACT ENG, DOI DOI 10.1007/0-387-27591-6_8
[8]   Spectroscopic studies of interfacial structures of CeO2-TiO2 mixed oxides [J].
Fang, Jun ;
Bi, Xinzhen ;
Si, Dejun ;
Jiang, Zhiquan ;
Huang, Weixin .
APPLIED SURFACE SCIENCE, 2007, 253 (22) :8952-8961
[9]   Heterogeneous photocatalysis: State of the art and present applications [J].
Herrmann, JM .
TOPICS IN CATALYSIS, 2005, 34 (1-4) :49-65
[10]   Visible active metal decorated titania catalysts for the photocatalytic degradation of Amidoblack-10B [J].
Joice, Joseph Amala Infant ;
Sivakumar, Thiripuranthagan ;
Ramakrishnan, Radhakrishnan ;
Ramya, Ganesan ;
Prasad, Kumaresa Pillai Shanmuga ;
Selvan, Devarajan Arul .
CHEMICAL ENGINEERING JOURNAL, 2012, 210 :385-397
1234