Thermally stable ordered mesoporous CeO2/TiO2 visible-light photocatalysts

被引：153
作者：
Li, Guisheng
Zhang, Dieqing
Yu, Jimmy C. [1 ]
机构：
[1] Chinese Univ Hong Kong, Dept Chem, Environm Sci Programme, Shatin, Hong Kong, Peoples R China
[2] Chinese Univ Hong Kong, Dept Chem, Ctr Novel Funct Mol, Shatin, Hong Kong, Peoples R China
来源：
PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2009年 / 11卷 / 19期
关键词：
THIN-FILMS; TITANIA; SOL; DEGRADATION; FABRICATION; MECHANISMS; NANOHYBRID; OXIDATION; OXIDES; RAMAN;
D O I：
10.1039/b819167k
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：
Thermally stable, ordered mesoporous CeO2/TiO2 (Ce/Ti molar ratio = 0.05) visible-light photocatalysts have been fabricated by the evaporation-induced self-assembly method. Introducing highly dispersed CeO2 species into the mesoporous TiO2 framework can effectively extend the response of TiO2 to the visible-light region and improve the thermal stability of the mesoporous TiO2. The products calcined at 500 degrees C exhibit superior photocatalytic performance in the photochemical degradation of methylene blue under visible-light irradiation. The products are characterized by using X-ray difraction (XRD), Brunauer-Emmett-Teller (BET), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), Raman, photo-luminescent (PL), and ultraviolet-visible-light reflectance (UV-vis) spectroscopy. The relationship between the physicochemical property and the photocatalytic performance of the as-prepared samples is discussed.
引用
收藏
页码：3775 / 3782
页数：8
相关论文
共 65 条
[1]   Modeling light scattering from mesoporous silicon [J].
Abouelsaood, AA .
JOURNAL OF APPLIED PHYSICS, 2002, 91 (05) :2753-2759
[2]   The design and development of highly reactive titanium oxide photocatalysts operating under visible light irradiation [J].
Anpo, M ;
Takeuchi, M .
JOURNAL OF CATALYSIS, 2003, 216 (1-2) :505-516
[3]   Nanostructured materials for advanced energy conversion and storage devices [J].
Aricò, AS ;
Bruce, P ;
Scrosati, B ;
Tarascon, JM ;
Van Schalkwijk, W .
NATURE MATERIALS, 2005, 4 (05) :366-377
[4]   Analysis of uncertainties in manometric gas-adsorption measurements. I: Propagation of uncertainties in BET analyses [J].
Badalyan, A ;
Pendleton, P .
LANGMUIR, 2003, 19 (19) :7919-7928
[5]   The impact of nanoscience on heterogeneous catalysis [J].
Bell, AT .
SCIENCE, 2003, 299 (5613) :1688-1691
[6]   Self-assembly of active Bi2O3/TiO2 visible photocatalyst with ordered mesoporous structure and highly crystallized anatase [J].
Bian, Zhenfeng ;
Zhu, Jian ;
Wang, Shaohua ;
Cao, Yong ;
Qian, Xufang ;
Li, Hexing .
JOURNAL OF PHYSICAL CHEMISTRY C, 2008, 112 (16) :6258-6262
[7]  
Brinker CJ, 1999, ADV MATER, V11, P579, DOI 10.1002/(SICI)1521-4095(199905)11:7<579::AID-ADMA579>3.0.CO
[8]  
2-R
[9]  
Cheetham AK, 1999, ANGEW CHEM INT EDIT, V38, P3268, DOI 10.1002/(SICI)1521-3773(19991115)38:22<3268::AID-ANIE3268>3.0.CO
[10]  
2-U
1234567