高级搜索

可见光活性Fe3O4@SiO2/AgBr的合成及其杀菌性能与机理

,  ,  ,  , 

downloadPDF

上一篇

下一篇

晋银佳, 雷立, 邓均, 陈享享, 朱跃. 可见光活性Fe3O4@SiO2/AgBr的合成及其杀菌性能与机理[J]. 环境工程学报, 2016, 10(10): 5459-5466. doi: 10.12030/j.cjee.201505164
引用本文: 晋银佳, 雷立, 邓均, 陈享享, 朱跃. 可见光活性Fe3O4@SiO2/AgBr的合成及其杀菌性能与机理[J]. 环境工程学报, 2016, 10(10): 5459-5466. doi: 10.12030/j.cjee.201505164
shu
JIN Yinjia, LEI Li, DENG Jun, CHEN Xiangxiang, ZHU Yue. Antibacterial capacity and mechanism of photocatalytic active Fe3O4@TiO2/AgBr[J]. Chinese Journal of Environmental Engineering, 2016, 10(10): 5459-5466. doi: 10.12030/j.cjee.201505164
Citation: JIN Yinjia, LEI Li, DENG Jun, CHEN Xiangxiang, ZHU Yue. Antibacterial capacity and mechanism of photocatalytic active Fe3O4@TiO2/AgBr[J]. Chinese Journal of Environmental Engineering, 2016, 10(10): 5459-5466. doi: 10.12030/j.cjee.201505164
shu

可见光活性Fe3O4@SiO2/AgBr的合成及其杀菌性能与机理

  • 1.

    华电电力科学研究院, 杭州 310030

  • 2.

    交通运输部水运科学研究院, 北京 100088

  • 3.

    北京大学环境与工程系, 教育部水沙科学重点实验室, 北京 100871

  • 4.

    东北大学资源与土木工程学院, 沈阳 110819

  • 基金项目:

    国家水体污染控制与治理科技重大专项（2010ZX07212-008）

Antibacterial capacity and mechanism of photocatalytic active Fe3O4@TiO2/AgBr

  • 1.

    Huadian Electric Power Research Institute, Hangzhou 310030, China

  • 2.

    China Waterborne Transport Research Institute, Beijing 100088, China

  • 3.

    Key Laboratory of Water and Sediment Sciences, Ministry of Education, Department of Environmental Engineering, Peking University, Beijing 100871, China

  • 4.

    School of Resources and Civil Engineering, Northeastern University, Shenyang 110819, China

  • Fund Project:

  • 摘要: 研究合成了具有可见光活性的磁性纳米材料Fe3O4@SiO2/AgBr，并对合成的复合材料进行了表征。Fe3O4@SiO2/AgBr为球形，直径为15 nm，饱和磁性强度达54 emu·g-1。复合材料在可见光下具有优异的杀菌性能，初始浓度为1.5×107个·mL-1的E.coli ATCC15597（E.coli）可以在2 h内被完全灭活。复合材料在可见光下的杀菌机理主要是由于在可见光下能够产生多种活性物质，其中H2O2、O2-和e-是起主要作用的活性物质。水中的腐殖酸能够抑制复合材料的杀菌性能，但是在5 mg·L-1腐殖酸存在的条件下，复合材料的杀菌效率依然可以达到99%以上。此外，复合材料具有很好的重复利用性能，将反应时间延长到2.5 h，5个重复利用循环中的细菌均能被完全灭活。
    Abstract: Magnetic photoactive Fe3O4@SiO2/AgBr nanomaterial was fabricated and characterized. Fe3O4@SiO2/AgBr nanoparticles were spherical with diameter about 10 nm, and as high as 54 emu·g-1 of magnetic intensity was conserved. Moreover, great antibacterial property of Fe3O4@SiO2/AgBr under visible light irradiation was observed, 1.5×107 CFU·mL-1 of the model bacteria E. coli ATCC15597 (E.coli) could be completely inactivated in 2 h. Reactive species produced by Fe3O4@SiO2/AgBr under visible light irradiation were evidenced to inactivate the bacteria. H2O2, O2- and e- had great contribution to the bactericidal process, while h+ and ·OH showed little contribution to the disinfection reaction. Humic acid (HA) could inhibit the photocatalytic bactericidal capacity, but more than 99% of bacterial could be inactivated even in the presence of 5 mg·L-1 of HA. Moreover, Fe3O4@SiO2/AgBr showed great reusability, complete inactivation of bacteria could be reached in all the five consecutive reuse cycles when the reaction time was lengthened to 2.5 h.
  • 加载中
  • [1] 马小杰,杨健,吴敏.市政水处理消毒技术现状与进展.北方环境,2004,29(5):65-67MA Xiaojie,YANG Jian,WU Min,et al.The condition and developing of water disinfecting technology in municipal water treatment process.North Environment,2004,29(5):65-67(in Chinese)
    [2] 罗刚,刘军,胡和平,等.城市污水消毒技术研究进展.广东化工,2008,35(11):78-81LUO Gang,LIU Jun,HU Heping,et al.Research progress in the disinfection technologies of sewage.Guangdong Chemical Industry,2008,35(11):78-81(in Chinese)
    [3] LI Hongna,ZHU Xiuping,NI Jinren.Comparison of electrochemical method with ozonation,chlorination and monochloramination in drinking water disinfection.Electrochimica Acta,2011,56(27):9789-9796
    [4] 黄君礼,唐玉兰,王丽,等.ClO2和Cl2混合消毒剂对氯仿形成的影响.环境科学,2003,24(2):102-107HUANG Junli,TANG Yulan,WANG Li,et al.Influence of the mixed disinfectant of ClO2 and Cl2 on formation of chloroform.Environmental Science,2003,24(2):102-107(in Chinese)
    [5] 焦忠志,陈忠林,陈杰,等.氯胺消毒对消毒副产物的控制研究.哈尔滨工业大学学报,2005,37(11):1486-1488JIAO Zhongzhi,CHEN Zhonglin,CHEN Jie,et al.Control of disinfection by-products in drinking water by monochloramine disinfectant.Journal of Harbin Institute of Technology,2005,37(11):1486-1488(in Chinese)
    [6] 王建玲,王宝贞,王琳,等.污水ClO2消毒副产物及生物毒性控制.哈尔滨工业大学学报,2006,38(11):1977-1980WANG Jianling,WANG Baozhen,WANG Lin,et al.Toxicity and removal of chlorine dioxide disinfection by-products of wastewater.Journal of Harbin Institute of Technology,2006,38(11):1977-1980(in Chinese)
    [7] MATSUNAGA T.,TOMODA R.,NAKAJIMA T.,et al.Photoelectrochemical sterilization of microbial cells by semiconductor powders.FEMS Microbiology Letters,1985,29(1/2):211-214
    [8] KIKUCHI Y.,SUNADA K.,IYODA T.,et al.Photocatalytic bactericidal effect of TiO2 thin films:Dynamic view of the active oxygen species responsible for the effect.Journal of Photochemistry and Photobiology A:Chemistry,1997,106(1/2/3):51-56
    [9] YAO Xiaxi,LIU Xiaoheng.One-pot synthesis of Ag/AgCl@SiO2 core-shell plasmonic photocatalyst in natural geothermal water for efficient photocatalysis under visible light.Journal of Molecular Catalysis A:Chemical,2014,393:30-38
    [10] BENABBOU A.K.,GUILLARD C.,PIGEOT-RéMY S.,et al.Water disinfection using photosensitizers supported on silica.Journal of Photochemistry and Photobiology A:Chemistry,2011,219(1):101-108
    [11] AN Changhua,MING Xijuan,WANG Jizhuang,et al.Construction of magnetic visible-light-driven plasmonic Fe3O4@SiO2@AgCl:Ag nanophotocatalyst.Journal of Materials Chemistry,2012,22(11):5171-5176
    [12] TIAN Baozhu,WANG Tingting,DONG Rongfang,et al.Core-shell structured γ-Fe2O3@SiO2@AgBr:Ag composite with high magnetic separation efficiency and excellent visible light activity for acid orange 7 degradation.Applied Catalysis B:Environmental,2014,147:22-28
    [13] CHEN W.J.,TSAI P.J.,CHEN Y.C.Functional Fe3O4/TiO2 core/shell magnetic nanoparticles as photokilling agents for pathogenic bacteria.Small,2008,4(4):485-491
    [14] ZHANG Yongxing,YU Xinyao,JIA Yong,et al.A facile approach for the synthesis of Ag-coated Fe3O4@TiO2 core/shell microspheres as highly efficient and recyclable photocatalysts.European Journal of Inorganic Chemistry,2011(33):5096-5104
    [15] CHEN Yingxu,YANG Shiying,WANG Kan,et al.Role of primary active species and TiO2 surface characteristic in UV-illuminated photodegradation of acid orange 7.Journal of Photochemistry and Photobiology A:Chemistry,2005,172(1):47-54
    [16] LEJEUNE D.,HASANUZZAMAN M.,PITCOCK A.,et al.The superoxide scavenger TEMPOL induces urokinase receptor (uPAR) expression in human prostate cancer cells.Molecular Cancer,2006,5:21
    [17] ZHANG Lisha,WONG K.H.,YIP H.Y.,et al.Effective photocatalytic disinfection of E.coli K-12 using AgBr-Ag-Bi2WO6 nanojunction system irradiated by visible light：The role of diffusing hydroxyl radicals.Environmental Science & Technology，2010，44(4)：1392-1398
    [18] ［18］ WANG Jiahong，ZHENG Shourong，SHAO Yun，et al.Aminofunctionalized Fe3O4@SiO2 core-shell magnetic nanomaterial as a novel adsorbent for aqueous heavy metals removal.Journal of Colloid and Interface Science,2010,349(1):293-299
    [19] CHO M.,CHUNG H.,CHOI W.,et al.Different inactivation behaviors of MS-2 phage and Escherichia coli in TiO2 photocatalytic disinfection.Applied and Environmental Microbiology,2005,71(1):270-275
    [20] WANG Lei,ZHANG Mingyue,ZHANG Nan,et al.Synergistic enhancement of cancer therapy using a combination of docetaxel and photothermal ablation induced by single-walled carbon nanotubes.International Journal of Nanomedicine,2011,6:2641-2652
    [21] JIN Yinjia,DAI Zhaoyi,LIU Fei,et al.Bactericidal mechanisms of Ag2O/TNBs under both dark and light conditions.Water Research,2013,47(5):1837-1847
    [22] CHEN Yanmin,LU Anhuai,LI Yan,et al.Naturally occurring sphalerite as a novel cost-effective photocatalyst for bacterial disinfection under visible light.Environmental Science & Technology,2011,45(13):5689-5695
    [23] WATTS R.J.,KONG S.,ORR M.P.,et al.Photocatalytic inactivation of coliform bacteria and viruses in secondary wastewater effluent.Water Research,1995,29(1):95-100
    [24] IMLAY J.A.,CHEN S.M.,LINN S.Toxic DNA damage by hydrogen peroxide through the Fenton reaction in vivo and in vitro.Science,1988,240(4852):640-642
    [25] ROSEN H.,KLEBANOFF S.J.Bactericidal activity of a superoxide anion-generating system.A model for the polymorphonuclear leukocyte.The Journal of Experimental Medicine,1979,149(1):27-39
    [26] KEHRER J.P.The Haber-Weiss reaction and mechanisms of toxicity.Toxicology,2000,149(1):43-50
    [27] OLOFSSON U.,ALLARD B.Complexes of Actinides with Naturally Occurring Organic Substances.Goteborg,Sweden:Department of Nuclear Chemistry,Chalmers University of Technology，1983
    [28] ［28］ SU Rina，JIN Yinjia，LIU Yang，et al.Bactericidal activity of Ag-doped multi-walled carbon nanotubes and the effects of extracellular polymeric substances and natural organic matter.Colloids and Surfaces B：Biointerfaces，2013，104：133-139
  • 加载中
WeChat 点击查看大图
计量
  • 文章访问数:  1782
  • HTML全文浏览数:  1379
  • PDF下载数:  605
  • 施引文献:  0
出版历程
  • 收稿日期:  2015-07-28
  • 刊出日期:  2016-10-20

可见光活性Fe3O4@SiO2/AgBr的合成及其杀菌性能与机理

  • 1. 华电电力科学研究院, 杭州 310030
  • 2. 交通运输部水运科学研究院, 北京 100088
  • 3. 北京大学环境与工程系, 教育部水沙科学重点实验室, 北京 100871
  • 4. 东北大学资源与土木工程学院, 沈阳 110819
  • 收稿日期:  2015-07-28
基金项目:

国家水体污染控制与治理科技重大专项（2010ZX07212-008）

摘要: 研究合成了具有可见光活性的磁性纳米材料Fe3O4@SiO2/AgBr，并对合成的复合材料进行了表征。Fe3O4@SiO2/AgBr为球形，直径为15 nm，饱和磁性强度达54 emu·g-1。复合材料在可见光下具有优异的杀菌性能，初始浓度为1.5×107个·mL-1的E.coli ATCC15597（E.coli）可以在2 h内被完全灭活。复合材料在可见光下的杀菌机理主要是由于在可见光下能够产生多种活性物质，其中H2O2、O2-和e-是起主要作用的活性物质。水中的腐殖酸能够抑制复合材料的杀菌性能，但是在5 mg·L-1腐殖酸存在的条件下，复合材料的杀菌效率依然可以达到99%以上。此外，复合材料具有很好的重复利用性能，将反应时间延长到2.5 h，5个重复利用循环中的细菌均能被完全灭活。

English Abstract

    全文HTML

参考文献 (28)

目录

/

返回文章
返回

Copyright © 2019 中国科学院生态环境研究中心