Sonochemical fabrication of fluorinated mesoporous titanium dioxide microspheres

被引:150
作者
Yu, Changlin [1 ,2 ,3 ]
Yu, Jimmy C. [1 ,2 ]
Chan, Mui [1 ,2 ]
机构
[1] Chinese Univ Hong Kong, Dept Chem, Ctr Novel Funct Mol, Shatin, Hong Kong, Peoples R China
[2] Chinese Univ Hong Kong, Environm Sci Programme, Shatin, Hong Kong, Peoples R China
[3] Jiangxi Univ Sci & Technol, Sch Mat & Chem Engn, Ganzhou 341000, Jiangxi, Peoples R China
关键词
TiO2; microspheres; Ultrasonic irradiation; Fluorination; Hydrothermal treatment; Photocatalysis; HIGH PHOTOCATALYTIC ACTIVITY; DOPED TIO2; SURFACE FLUORINATION; ORGANIC-COMPOUNDS; METAL-OXIDES; TRANSFORMATION; ULTRASOUND; OXIDATION; SUBSTRATE; POWDERS;
D O I
10.1016/j.jssc.2009.01.033
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
A sonochemical-hydrothermal method for preparing fluorinated mesoporous TiO2 microspheres was developed. Formation of mesoporous TiO2 and doping of fluorine was achieved by sonication and then hydrothermal treatment of a solution containing titanium isopropoxide, template, and sodium fluoride. The as-synthesized TiO2 microspheres were characterized by X-ray diffraction (XRD), Fourier translation infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray (EDX) spectroscopy, photoluminescence spectroscopy (PL), and BET surface areas. The P123 template was removed completely during the hydrothermal and washing steps, which was different from the conventional calcination treatment. The as- synthesized TiO2 microspheres had good crystallinity and high stability. Results from the photocatalytic degradation of methylene blue (MB) showed that fluorination could remarkably improve the photocatalytic activity of titanium dioxide. (C) 2009 Elsevier Inc. All rights reserved.
引用
收藏
页码:1061 / 1069
页数:9
相关论文
共 49 条
[1]   Synthesis and characterization of titania photocatalysts:: The influence of pretreatment on the activity [J].
Alapi, T ;
Sipos, P ;
Ilisz, I ;
Wittmann, G ;
Ambrus, Z ;
Kiricsi, I ;
Mogyorósi, K ;
Dombi, A .
APPLIED CATALYSIS A-GENERAL, 2006, 303 (01) :1-8
[2]   PHOTOLUMINESCENCE AND PHOTOCATALYTIC ACTIVITY OF HIGHLY DISPERSED TITANIUM-OXIDE ANCHORED ONTO POROUS VYCOR GLASS [J].
ANPO, M ;
AIKAWA, N ;
KUBOKAWA, Y ;
CHE, M ;
LOUIS, C ;
GIAMELLO, E .
JOURNAL OF PHYSICAL CHEMISTRY, 1985, 89 (23) :5017-5021
[3]   Synthesis of phosphorus-free mesoporous titania via templating with amine surfactants [J].
Antonelli, DM .
MICROPOROUS AND MESOPOROUS MATERIALS, 1999, 30 (2-3) :315-319
[4]   HETEROGENEOUS PHOTOCATALYSIS [J].
FOX, MA ;
DULAY, MT .
CHEMICAL REVIEWS, 1993, 93 (01) :341-357
[5]   Photoelectrochemical cells [J].
Grätzel, M .
NATURE, 2001, 414 (6861) :338-344
[6]   Low-temperature hydrothermal synthesis of S-doped TiO2 with visible light photocatalytic activity [J].
Ho, WK ;
Yu, JC ;
Lee, SC .
JOURNAL OF SOLID STATE CHEMISTRY, 2006, 179 (04) :1171-1176
[7]   Photocatalytic water treatment: fundamental knowledge required for its practical application [J].
Hufschmidt, D ;
Liu, L ;
Selzer, V ;
Bahnemann, D .
WATER SCIENCE AND TECHNOLOGY, 2004, 49 (04) :135-140
[8]   Nanoparticle routes to mesoporous titania thin films [J].
Hwang, YK ;
Lee, KC ;
Kwon, YU .
CHEMICAL COMMUNICATIONS, 2001, (18) :1738-1739
[9]   Nanostructured molybdenum carbide: Sonochemical synthesis and catalytic properties [J].
Hyeon, TH ;
Fang, MM ;
Suslick, KS .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1996, 118 (23) :5492-5493
[10]   Effects of surface fluorination of TiO2 on photocatalytic oxidation of gaseous acetaldehyde [J].
Kim, Hwajin ;
Choi, Wonyong .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2007, 69 (3-4) :127-132