%0 Journal Article
%T KineticsandefficiencydisplayedbysupportedandsuspendedTiO2catalystsappliedtothedisinfectionofEscherichiacoli
%A Majdi Kacem
%A Gael Plantard
%A Nathalie Wery
%A Vincent Goetz
%J ´ß»¯Ñ§±¨
%P 1571-1577
%D 2014
%R 10.1016/S1872-2067(14)60125-X
%X £¿TiO2-mediatedphotocatalysisiswidelyusedinavarietyofapplicationsandproductsintheenvironmentalandenergyfields,includingphotoelectrochemicalconversion,self-cleaningsurfaces,andespeciallywaterpurificationsystems.ThedimensionalityofthestructureofaTiO2materialcanaffectitsproperties,functions,andmorespecifically,itsphotocatalyticperformance.Inthiswork,thephotocatalyticinactivationofGram-negativeEscherichiacoliusingthreephotocatalysts,differingintheirstructureandothercharacteristics,wasstudiedinabatchreactorunderUVAlight.TheaimwastoestablishthedisinfectionefficiencyofsolidTiO2comparedwiththatofsuspendedcatalysts,widelyconsideredasreferencecasesforphotocatalyticwaterdisinfection.Thebacterialinactivationprofilesobtainedshowedthat:(1)thephotoinactivationwasexclusivelyrelatedtothequantityofphotonsretainedperunitoftreatedvolume,irrespectiveofthecharacteristicsofthephotocatalystandtheemittedlightfluxdensities;(2)acrossthewholeUVlightrangestudied,eachofthephotocatalyticsolidswasabletoachievemorethan2logbacterialinactivationwithlessthan2hUVirradiation;(3)noneoftheusedcatalystsachievedatotalbacterialdisinfectionduringthetreatmenttime.Foreachofthecatalyststhequantumyieldhasbeenassessedintermsofdisinfectionefficiency,the2Dmaterialshowedalmostthesameperformanceasthoseofsuspendedcatalysts.Thiscatalystispromisingforsupportedphotocatalysisapplications.
%K Heterogeneousphotocatalysis
%K Slurriedcatalyst
%K Supportedcatalyst
%K Disinfectionkinetics
%K Quantumyield
%U http://www.chxb.cn/CN/abstract/abstract21373.shtml