Physical and photocatalytic properties of zinc ferrite doped titania under visible light irradiation

被引：56
作者：
Ping, C [1 ]
Wei, L [1 ]
Zhou, TL [1 ]
Jin, YP [1 ]
Gu, MY [1 ]
机构：
[1] Shanghai Jiao Tong Univ, State Key Lab MMCs, Shanghai 200030, Peoples R China
来源：
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2004年 / 168卷 / 1-2期
基金：
中国国家自然科学基金;
关键词：
photocatalyst; visible light; titania; zinc ferrite; methyl orange;
D O I：
10.1016/j.jphotochem.2004.05.018
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：
Visible light responsive zinc ferrite doped titania photocatalyst (TiO2(ZnFe2O4)) was prepared by sol-gel method and was calcined at different temperatures. Diffuse reflectance spectroscopy (DRS) results show that the absorption edge of TiO2(ZnFe2O4) has moved to the visible spectrum range in comparison with the undoped titania. The photocatalytic experimental result demonstrates that TiO2(ZnFe2O4) powder can effectively photodegrade methyl orange (MO) under visible light irradiation. Effect of calcination temperature on the photocatalytic activity of TiO2(ZnFe2O4) was also investigated. Zeta potential measurements indicate that the isoelectric point (IEP) of the TiO2(ZnFe2O4) powder shifts to lower pH units with the increase of calcination temperature. Brunauer-Emmett-Teller (BET) surface area decreases with the rise of calcination temperature. It is concluded that the surface charge and BET surface area are the key factors for the higher photoactivity of zinc ferrite doped titania photocatalyst calcined at 400 degreesC. (C) 2004 Elsevier B.V. All rights reserved.
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页码：97 / 101
页数：5
相关论文
共 23 条
  • [1] The design and development of highly reactive titanium oxide photocatalysts operating under visible light irradiation
    Anpo, M
    Takeuchi, M
    [J]. JOURNAL OF CATALYSIS, 2003, 216 (1-2) : 505 - 516
  • [2] Visible-light photocatalysis in nitrogen-doped titanium oxides
    Asahi, R
    Morikawa, T
    Ohwaki, T
    Aoki, K
    Taga, Y
    [J]. SCIENCE, 2001, 293 (5528) : 269 - 271
  • [3] BAHNEMANN DW, 1994, AQUATIC AND SURFACE PHOTOCHEMISTRY, P349
  • [4] Gas-phase photo-oxidation of organic compounds over nanosized TiO2 photocatalysts by various preparations
    Deng, XY
    Yue, YH
    Gao, Z
    [J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 2002, 39 (02) : 135 - 147
  • [5] Investigations of metal-doped titanium dioxide photocatalysts
    Dvoranová, D
    Brezová, V
    Mazúr, M
    Malati, MA
    [J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 2002, 37 (02) : 91 - 105
  • [6] Nanosize Ti-W mixed oxides:: Effect of doping level in the photocatalytic degradation of toluene using sunlight-type excitation
    Fuerte, A
    Hernández-Alonso, MD
    Maira, AJ
    Martínez-Arias, A
    Fernández-García, M
    Conesa, JC
    Soria, J
    Munuera, G
    [J]. JOURNAL OF CATALYSIS, 2002, 212 (01) : 1 - 9
  • [7] PHOTOELECTROCHEMISTRY IN SEMICONDUCTOR PARTICULATE SYSTEMS .16. PHOTOPHYSICAL AND PHOTOCHEMICAL ASPECTS OF COUPLED SEMICONDUCTORS - CHARGE-TRANSFER PROCESSES IN COLLOIDAL CDS-TIO2 AND CDS-AGI SYSTEMS
    GOPIDAS, KR
    BOHORQUEZ, M
    KAMAT, PV
    [J]. JOURNAL OF PHYSICAL CHEMISTRY, 1990, 94 (16) : 6435 - 6440
  • [8] High photocatalytic activity of F-doped TiO2 film on glass
    Hattori, A
    Tada, H
    [J]. JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY, 2001, 22 (1-2) : 47 - 52
  • [9] Efficient photochemical water splitting by a chemically modified n-TiO2 2
    Khan, SUM
    Al-Shahry, M
    Ingler, WB
    [J]. SCIENCE, 2002, 297 (5590) : 2243 - 2245
  • [10] Photocatalytic activity of WOx-TiO2 under visible light irradiation
    Li, XZ
    Li, FB
    Yang, CL
    Ge, WK
    [J]. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2001, 141 (2-3) : 209 - 217
123