TiO2 photoactivity in vis and UV light: The influence of calcination temperature and surface properties

被引:177
作者
Gorska, Paulina [1 ]
Zaleska, Adriana [1 ]
Kowalska, Ewa [1 ]
Klimczuk, Tomasz [2 ]
Sobczak, Janusz W. [3 ]
Skwarek, Ewa [4 ]
Janusz, Wladyslaw [4 ]
Hupka, Jan [1 ]
机构
[1] Gdansk Univ Technol, Fac Chem, Dept Chem Technol, PL-80952 Gdansk, Poland
[2] Gdansk Univ Technol, Fac Appl Phys & Math, Dept Solid State Phys, PL-80952 Gdansk, Poland
[3] Polish Acad Sci, Inst Phys Chem, Lab Electron Spect, PL-01224 Warsaw, Poland
[4] Marie Curie Sklodowska Univ, Fac Chem, Dept Radiochem & Colloid Chem, PL-20031 Lublin, Poland
关键词
Titanium dioxide; Heterogeneous photocatalysis; Calcination; Visible and ultraviolet light;
D O I
10.1016/j.apcatb.2008.04.028
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
A series of TiO2 photocatalysts were obtained using several calcination temperatures ranging from 350 to 750 degrees C. The photocatalysts' characteristics by X-ray diffraction, UV-vis and FTIR diffuse reflectance spectroscopies, X-ray photoelectron spectroscopy, BET and BJH methods showed that sample active in vis region had anatase structure, about 200 m(2)/g specific surface area, absorbed light for lambda > 400 nm and contained 10.1 at.% of C-C species. The photocatalytic activity of the catalysts was estimated by measuring the decomposition rate of phenol in 0.21 mM aqueous solution in visible and ultraviolet light. The experimental data clearly indicate correlation between the absorption intensity of irradiation by obtained powders and their photocatalytic performance in phenol degradation. An increase in absorbance over the entire vis region and the highest photocatalytic activity for phenol degradation in visible light (lambda > 400 nm) occurred for photocatalyst calcinated at 350 degrees C. Photocatalyst processed at 450 degrees C had the best activity in UV light (250 < lambda < 400 nm). (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码:440 / 447
页数:8
相关论文
共 32 条
[1]   Study of adsorption of phenol on titanium oxide (TiO2) [J].
Bekkouche, S ;
Bouhelassa, M ;
Salah, NH ;
Meghlaoui, FZ .
DESALINATION, 2004, 166 (1-3) :355-362
[2]  
CHOI W, 2007, P 2 INT C SEM PHOT J
[3]   Adsorption of phenolic compounds by activated carbon - a critical review [J].
Dabrowski, A ;
Podkoscielny, P ;
Hubicki, Z ;
Barczak, M .
CHEMOSPHERE, 2005, 58 (08) :1049-1070
[4]   Geometric and electronic structures of the boron-doped photocatalyst TiO2 [J].
Geng, H ;
Yin, SW ;
Yang, X ;
Shuai, ZG ;
Liu, BG .
JOURNAL OF PHYSICS-CONDENSED MATTER, 2006, 18 (01) :87-96
[5]  
GORSKA P, 2005, P 4 INT C OILS ENV A, P375
[6]  
GORSKA P, 2006, POL J CHEM TECH, V8, P102
[7]   A promoting effect of NH4F addition on the photocatalytic activity of sol-gel TiO2 films [J].
Hattori, A ;
Yamamoto, M ;
Tada, H ;
Ito, S .
CHEMISTRY LETTERS, 1998, (08) :707-708
[8]   ENVIRONMENTAL APPLICATIONS OF SEMICONDUCTOR PHOTOCATALYSIS [J].
HOFFMANN, MR ;
MARTIN, ST ;
CHOI, WY ;
BAHNEMANN, DW .
CHEMICAL REVIEWS, 1995, 95 (01) :69-96
[9]   Visible-light-activated nanoparticle photocatalyst of iodine-doped titanium dioxide [J].
Hong, XT ;
Wang, ZP ;
Cai, WM ;
Lu, F ;
Zhang, J ;
Yang, YZ ;
Ma, N ;
Liu, YJ .
CHEMISTRY OF MATERIALS, 2005, 17 (06) :1548-1552
[10]  
INAGAKI M, 2005, P 4 INT C OILS ENV A, P325