銅摻雜二氧化鈦薄膜負載顆粒光催化降解模擬染料的研究.pdf

1、中國科學技術大學碩士學位論文銅摻雜二氧化鈦薄膜負載顆粒光催化降解模擬染料的研究姓名：齊帥申請學位級別：碩士專業(yè)：環(huán)境工程指導教師：劉義新20090501AbstractABSTRACTInrecentyears，agreatdealofefforthadbeendevotedtodevelopingheterogeneoussemiconductorphotocatalysts嘶tllhighphotocatalyticactivity

2、fortheir塒deenvironmentalapplicationssuchasairpurication，waterdisinfection，hazardouswasteremediationandwaterpuricationAmongvariousoxidesemiconductorphotocatalysts，titaniumdioxidehadbeenprovedtobeoneofthebestphotocatalysts

3、duetOitshighoxidativeabilitycost—effectiveness，physicalandchemicalinertnessforwidespreadenvironmentalapplicationsHowevertherestillremainedsomeproblemsinpracticalapplications，suchasthepreparationofphotocatalystwithhi曲phot

4、ocatalyticactivitythelightutilizationratioThephotocatalyticactivityoftitaniamustbefurtherenhancedfromthepointofpracticaluseandcommerceInthepresentwork，aimingattheexistingproblems，wetriedtoimproveonthemetalioncopingandcha

5、ngecarriersSOastopreparedifferentphotocatalystsWealsostudythesurfacecharacteristicofcatalyzersWeemphaticallystudiedthephotocatalyticactivityoftitaniaofphotocatalyticsindifferentconditionsinthesun’SraysThemainresultsofthe

6、presentworkwereasfollows：TheevenlycommonCudopingTi02thinfilmsdepositedoncarriersilicagelwerepreparedbySol—gelprocessingTheconditionsofloadingofTi02nanoparticlesoncarrierwereobservedonscanningelectronmicroscope(SEM)Theres

7、ultsshowedthatTi02nanoparticleswerehomogenizedoncarrierThepagestudiedtheeffectofphotocatalyticdegradationofalkalifuchsinonTi02thinfilmsbyinitialalkalifuchsinconcentrationandcatalystloadingonconditionofsunlightTheefficien

8、cyofphotocatalyticdegradationWascomparedbetweenCu—dopingTi02andTi02catalystTheresultsshowedthattheefficiencyofphotocatalyticdegradationwereincreasingwitlltheincreaseofcatalystloading，butwhencatalystloadingreachedacertain

9、amounttheefficiencyofphotocatalyticdegradationincreasingfewerTheefficiencyofphotocatalyticdegradationwasreducing、撕吐ltheincreaseofinitialalkalifuchsinconcentrationConsideringeconomicalefficiencyandefficiencyofphotocatalyt

10、icdegradation，wechosethecatalystloadingof309／100mLandinitialalkalifuchsinconcentrationof10mg／L，therateofphotocatalyticdegradationhavingreachedtO8361％AndphotocatalyticofCu—dopingZi02weremoreactivethanthatofZi02catalystThe