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Effective Photocatalytic Disinfection of Pathogenic Bacteria with Ag/Si02/Ti02 Nanotube Arrays Film under Visible Light Irradiation  
Effective Photocatalytic Disinfection of Pathogenic Bacteria with Ag/Si02/Ti02 Nanotube Arrays Film under Visible Light Irradiation
資料類型: PDF文件
關鍵詞: photocatalytic  inactivation  ag/si02/ti02  nanotube  arrays  visible  light  
pathogenic  bacteria  
資料大?。?/td> 100K
所屬學科: 分子表征
來源: 第六屆亞歐研討會上處理和性能增強聚合物會議文集(2013.6.2-6 武漢)
簡介:
ThephotocatalyticinactivationofpathogenicbacteriainsalinemediawithaternaryAg/Si02/Ti02nanotubearraysfilmwasinvestigated,andthecontrolexperimentalwasperformedinthedarkforcomparison.Thecatalystwassynthesizedbyafaciletwo-stepmethodandfoundtobeeffectiveforthedisinfectionofEscherichiacoli,aGram-negativebacterium,andStaphylococcusaureus,aGram-positivebacteriumundervisiblelight(A>420nm)irradiation.Thevisible-light-driven(VLD)Ag/Si02/Ti02nanotubearraysexhibitedmuchsuperiortootherreferencephotocatalystssuchasTi02,Si02/Ti02andAg/Ti02.Moreover,theroleofhydroxylradicalsformedin0.9%salinemediaundervisiblelightirradiationwasinvestigated.ItwasfoundthattheconcentrationofhydroxylradicalsincreasedintheorderofTi02determinationofpotassiumion(K+)leakagefromthekilledbacteria.ThisstudyprovidedapotentialeffectiveVLDphotocatalysttodisinfectthebacterialcellsinthesalinewater.Thevisible-lightphotocatalyticmechanismofAg/Si02/Ti02nanotubearraysandfactorscontributingtoitshighphotostabilityin0.9%salinewaterwereproposed.
作者: Z. M. Hu, W. J. Liao, Y. R. Zhang
上傳時間: 2013-07-03 14:20:42
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