Low-temperature preparation and visible-light-induced catalytic activity of anatase F-N-codoped TiO2

被引:97
作者
Xie, Yi [1 ]
Li, Yuanzhi [1 ]
Zhao, Xiujian [1 ]
机构
[1] Wuhan Univ Technol, Minist Educ, Key Lab Silicate Mat Sci & Engn, Wuhan 430070, Peoples R China
关键词
low-temperature preparation; F-N-codoping; titanium dioxide; visible light;
D O I
10.1016/j.molcata.2007.07.031
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
This paper reports a new process to prepare the F-N-codoped TiO2 photocatalysts with anatase at 100 degrees C using TiCL4 and NH4F as titanium and fluorine, nitrogen sources, respectively. The as-prepared yellow or white yellow photocatalysts were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), nitrogen adsorption/desorption measurements (BET), X-ray photoelectron spectroscopy (XPS) and UV-vis diffuse reflectance spectra (UV-vis DRS). The results showed that the F-N-codoping extended the absorbance spectra of TiO2 into visible region. The BET surface area of the as-prepared F-N-codoped TiO2 photocatalyst was high up to 191 m(2) g(-1). The results of degradation of methyl orange (MO) solution showed that the F-N-codoped samples exhibit much higher visible-light-induced catalytic activities than that of Degussa P25 and the as-prepared pure TiO2. This property can be attributed to the synergetic effects of absorption in the visible-light region, red shift in adsorption edge, good crystallization, porous structure and large surface area of the F-N-codoped TiO2. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码:119 / 126
页数:8
相关论文
共 39 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]   Preparation, testing and characterization of doped TiO2 active in the peroxidation of biomolecules under visible light [J].
Bacsa, R ;
Kiwi, J ;
Ohno, T ;
Albers, P ;
Nadtochenko, V .
JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (12) :5994-6003
[3]   Reaction of NH3 with titania:: N-doping of the oxide and TiN formation [J].
Chen, Haiyan ;
Nambu, Akira ;
Wen, Wen ;
Graciani, Jesus ;
Zhong, Zhong ;
Hanson, Jonathan C. ;
Fujita, Etsuko ;
Rodriguez, Jose A. .
JOURNAL OF PHYSICAL CHEMISTRY C, 2007, 111 (03) :1366-1372
[4]   Visible light mediated photocatalytic degradation of gaseous trichloroethylene and dimethyl sulfide on modified titanium dioxide [J].
Demeestere, K ;
Dewulf, J ;
Ohno, T ;
Salgado, PH ;
Van Langenhove, H .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2005, 61 (1-2) :140-149
[5]   Theory of carbon doping of titanium dioxide [J].
Di Valentin, C ;
Pacchioni, G ;
Selloni, A .
CHEMISTRY OF MATERIALS, 2005, 17 (26) :6656-6665
[6]   Characterization of paramagnetic species in N-doped TiO2 powders by EPR spectroscopy and DFT calculations [J].
Di Valentin, C ;
Pacchioni, G ;
Selloni, A ;
Livraghi, S ;
Giamello, E .
JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (23) :11414-11419
[7]   XPS and FTIR surface characterization of TiO2 particles used in polymer encapsulation [J].
Erdem, B ;
Hunsicker, RA ;
Simmons, GW ;
Sudol, ED ;
Dimonie, VL ;
El-Aasser, MS .
LANGMUIR, 2001, 17 (09) :2664-2669
[8]   HETEROGENEOUS PHOTOCATALYSIS [J].
FOX, MA ;
DULAY, MT .
CHEMICAL REVIEWS, 1993, 93 (01) :341-357
[9]   Ion implantation and annealing for an efficient N-doping of TiO2 nanotubes [J].
Ghicov, Andrei ;
Macak, Jan M. ;
Tsuchiya, Hiroaki ;
Kunze, Julia ;
Haeublein, Volker ;
Frey, Lothar ;
Schmuki, Patrik .
NANO LETTERS, 2006, 6 (05) :1080-1082
[10]   Investigation of structure and properties of N-doped TiO2 thin films grown by APCVD [J].
Guo, Yu ;
Zhang, Xi-wen ;
Han, Gao-Rong .
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 2006, 135 (02) :83-87