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NiO/SrBi2O4可见光催化杀菌的研究

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郭健, 胡学香, 王爱民, 胡春. NiO/SrBi2O4可见光催化杀菌的研究[J]. 环境化学, 2007, 26(2): 207-209.
引用本文: 郭健, 胡学香, 王爱民, 胡春. NiO/SrBi2O4可见光催化杀菌的研究[J]. 环境化学, 2007, 26(2): 207-209.
shu
GUO Jian, HU Xue-xiang, WANG Ai-min, HU Chun. KILLING E.COLI OF NiO/SrBi2O4 UNDER VISIBLE LIGHT IRRADIATION[J]. Environmental Chemistry, 2007, 26(2): 207-209.
Citation: GUO Jian, HU Xue-xiang, WANG Ai-min, HU Chun. KILLING E.COLI OF NiO/SrBi2O4 UNDER VISIBLE LIGHT IRRADIATION[J]. Environmental Chemistry, 2007, 26(2): 207-209.
shu

NiO/SrBi2O4可见光催化杀菌的研究

  • 1.

    中国科学院生态环境研究中心, 环境水质学国家重点实验室, 北京, 100085;

  • 2.

    北京林业大学, 北京, 100083

  • 基金项目:

    国家自然科学基金资助项目(批准号:20577062,20377050)

KILLING E.COLI OF NiO/SrBi2O4 UNDER VISIBLE LIGHT IRRADIATION

  • 1.

    State Key Laboratory of Environmental Aquatic Chemistry, Research Center for EcoEnvironmental Science, Chinese Academy of Sciences, Beijing, 100085, China;

  • 2.

    Beijing Forestry University, Beijing, 100083, China

  • Fund Project:

  • 摘要: 采用共沉淀法制备SrBi2O4,利用浸渍法将NiO负载到SrBi2O4表面上,制得可见光催化杀菌剂.紫外可见漫反射光谱的测定显示催化剂在400-650nm波长有吸收.表明NiO/SrBi2O4在可见光(λ>420nm)照射下对革蓝氏阴性菌大肠杆菌(E.coli)有很高的杀菌活性.通过TEM观察和ICP测定反应过程中钾离子的浓度变化,证实细菌细胞壁和细胞膜均遭到破坏.
    Abstract: NiO/SrBi2O4 was prepared by coprecipitation and impregnation methods and was found to be a novel visible light driven bactericidal catalyst.The catalyst showed high efficiency for the killing of Escherichia coli,a Gram negative Bacterium under visible light(λ>420 nm)irradiation. The decomposition process of the cell wall and the cell membrane was directly observed by TEM, and further confirmed by the determination of potassium ion(K+)leakage from the killed bacteria.
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  • [1] Gumy D,Morais C,Bowen P et al.,Catalytic Activity of Commercial of TiO2 Powders for the Abatement of the Bacteria(E.coli) under Solar Simulated Light:Influence of the Isoeledtric Point.Applied Catalysis B:Environ.,2005,63:76-84
    [2] Angela-Guiovana RincO'n,Cesar Pulgarin,Effect of pH,Inorganic Matter and H2O2 on E.coli K12 Photocatalytic Inactivation by TiO2 Implication in Solar Water Disinfection.Applied Catalysis B:Environ.,2004,51:283-302
    [3] Angela-Guiovana RincO'n,Cesar Pulgarin,Bactericidal Action of Iilluminated TiO2 on Pure Escherichia coli and Natural Bacterial Consortia:Post-Irradiation Events in Dark and Assessment of the Effective Disinfection Tim.Applied Catalysis B,Environ.,2004,49:99-112
    [4] Fu H,Pan C,Yao W et al.,Visible-Light-Induced Degradation of Rhodamine B by Nanosized Bi2WO6.Phys.Chem.B,2005,109:22432-22439
    [5] Tang J,Zou Z,Ye J,Efficient Photocatalytic Decomposition of Organic Contaminants over CaBi2O4 under Visible-Light Irradiation.Angew.Chem.,Int.Ed.,2004,116:4563-4566
    [6] Kim H,Hwang D,Lee J,An Undoped,Single-Phase Oxide Photocatalyst Working under Visible Light.Am.Chem.Soc.,2004,126:8912-8913
    [7] Lu Zhe-xue,Zhou L,Zhang Z L et al.,Cell Damage Induced by Photocatalysis of TiO2 Thin Films.Langmuir,2003,19:8765-8768
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  • 收稿日期:  2006-04-05
郭健, 胡学香, 王爱民, 胡春. NiO/SrBi2O4可见光催化杀菌的研究[J]. 环境化学, 2007, 26(2): 207-209.
引用本文: 郭健, 胡学香, 王爱民, 胡春. NiO/SrBi2O4可见光催化杀菌的研究[J]. 环境化学, 2007, 26(2): 207-209.
shu
GUO Jian, HU Xue-xiang, WANG Ai-min, HU Chun. KILLING E.COLI OF NiO/SrBi2O4 UNDER VISIBLE LIGHT IRRADIATION[J]. Environmental Chemistry, 2007, 26(2): 207-209.
Citation: GUO Jian, HU Xue-xiang, WANG Ai-min, HU Chun. KILLING E.COLI OF NiO/SrBi2O4 UNDER VISIBLE LIGHT IRRADIATION[J]. Environmental Chemistry, 2007, 26(2): 207-209.
shu

NiO/SrBi2O4可见光催化杀菌的研究

  • 1.  中国科学院生态环境研究中心, 环境水质学国家重点实验室, 北京, 100085;
  • 2.  北京林业大学, 北京, 100083
  • 收稿日期:  2006-04-05
基金项目:

国家自然科学基金资助项目(批准号:20577062,20377050)

摘要: 采用共沉淀法制备SrBi2O4,利用浸渍法将NiO负载到SrBi2O4表面上,制得可见光催化杀菌剂.紫外可见漫反射光谱的测定显示催化剂在400-650nm波长有吸收.表明NiO/SrBi2O4在可见光(λ>420nm)照射下对革蓝氏阴性菌大肠杆菌(E.coli)有很高的杀菌活性.通过TEM观察和ICP测定反应过程中钾离子的浓度变化,证实细菌细胞壁和细胞膜均遭到破坏.

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