Photocatalytic property of perovskite bismuth titanate

被引:237
作者
Yao, WF [1 ]
Xu, XH
Wang, H
Zhou, JT
Yang, XN
Zhang, Y
Shang, SX
Huang, BB
机构
[1] Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Peoples R China
[2] Civil Aviat Univ China, Sch Sci, Tianjin 300300, Peoples R China
[3] Shandong Univ, Sch Chem & Chem Engn, Jinan, Peoples R China
[4] Shandong Univ, Dept Environm Engn, Jinan 250100, Peoples R China
关键词
heterogeneous catalysis; perovskite; Bi4Ti3O12;
D O I
10.1016/j.apcatb.2004.04.002
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
Bismuth titanate Bi4Ti3O12 was prepared by using the chemical solution decomposition (CSD) method. The obtained powders were characterized by X-ray diffraction (XRD), UV-Vis spectroscopy. Photocatalytic property of Bi4Ti3O12 crystals was evaluated by using methyl orange as a model organic compound. The factors affecting the photocatalytic activity, such as calcination condition for the photocatalyst, the pH value of the reaction suspension, the strong oxidant species additives H2O2 and the addition of NaCl, NaNO3 and K2SO4 into the suspension, have been studied. The band gap energy value for Bi4Ti3O12 compound is 3.08 eV observed by a UV-Vis recording spectrophotometer. Bi4Ti3O12 exhibits photocatalytic activities to photodegrade methyl orange. The bond angle of Ti-O-Ti in Bi4Ti3O12 and the formed intra-electric field between the (Bi2O2)(2+) layer and the (Bi2Ti3O10)(2-) layer are assumed to motivate the separation of the photogenerated electrons-holes pairs and then improve the photocatalytic activity of the catalysts. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:109 / 116
页数:8
相关论文
共 38 条
  • [31] Preparation and characterization of bi-doped TiO2 photocatalyst
    Xu, XH
    Wang, M
    Hou, Y
    Yao, WF
    Wang, D
    Wang, H
    [J]. JOURNAL OF MATERIALS SCIENCE LETTERS, 2002, 21 (21) : 1655 - 1656
  • [32] Photocatalytic decomposition of NO at 275 K on titanium oxides included within Y-zeolite cavities: The structure and role of the active sites
    Yamashita, H
    Ichihashi, Y
    Anpo, M
    Hashimoto, M
    Louis, C
    Che, M
    [J]. JOURNAL OF PHYSICAL CHEMISTRY, 1996, 100 (40) : 16041 - 16044
  • [33] Synthesis and photocatalytic property of bismuth titanate Bi4Ti3O12
    Yao, WF
    Wang, H
    Xu, XH
    Shang, SX
    Hou, Y
    Zhang, Y
    Wang, M
    [J]. MATERIALS LETTERS, 2003, 57 (13-14) : 1899 - 1902
  • [34] YOUNG K, 1992, WATER RES, V26, P1451
  • [35] Effects of F- doping on the photocatalytic activity and microstructures of nanocrystalline TiO2 powders
    Yu, JC
    Yu, JG
    Ho, WK
    Jiang, ZT
    Zhang, LZ
    [J]. CHEMISTRY OF MATERIALS, 2002, 14 (09) : 3808 - 3816
  • [36] Effect of surface structure on photocatalytic activity of TiO2 thin films prepared by sol-gel method
    Yu, JG
    Zhao, XJ
    Zhao, QN
    [J]. THIN SOLID FILMS, 2000, 379 (1-2) : 7 - 14
  • [37] ZHANG QH, 2000, APPL CATAL B-ENVIRON, V36, P31
  • [38] Role of particle size in nanocrystalline TiO2-based photocatalysts
    Zhang, ZB
    Wang, CC
    Zakaria, R
    Ying, JY
    [J]. JOURNAL OF PHYSICAL CHEMISTRY B, 1998, 102 (52): : 10871 - 10878