TiO-,2-光催化劑的制備、表征及性能研究.pdf

1、天津大學碩士學位論文TiO光催化劑的制備、表征及性能研究姓名：王祖鹓申請學位級別：碩士專業(yè)：化學工程指導教師：張鳳寶20030701AbstractWl也theadvancementanddevelopmentofmodemindustry，increasingenvironmentalproblemsarebroughtoutTherearemanymethodsfordisposingcontaminations，amongwhic

2、hthemultiphasephotocatalysisforthedegradationofcontaminationsofnanoTi02issuperiorⅢsmethodhashil曲activity，noselectivity，completeoxidation，sunlightandoxygen’Sapplication(inwaterphase)ItCanbeappliedforharddegradationAmerica

3、n，JapanandCanadausethetechnologyofTi02photocatalysisforenvironmentalprotectionButnOW，theresearchlevelofthistechnologyislimitedinthelaboratoriesinChinaThisthesisincludesthreepartsofwork：thepreparationofTi02nanocrystals，th

4、eimmobilizationofTi02filmsandtheresearchofthephotocatalyticactivityTheTi02nanoparticlesarepreparedinwater／OP一7／heptanemicroemulsions，whicharecharacterizedbyTGDTA、DSCXRD、FTIR，TEMandBETComparedwithwater／Span一80／cyclohexane

5、microemulsionsandSol—gelmethods，itsproductprocess，washing，solventsreclaimandyieldareadvantageousResultsshowedlittlesolventsresidueandacrystallinetransformtemperatureof4373℃TheTi02nanoparticleshaveuniformsizedistributionw

6、iththeaverageparticlesizeintherangeof97～158nlnandrelativelargespecificareaTheyieldofthismethodis80％TheTi02filmsareimmobilizedontheactivedcarbonandholographicglassesbyliquidphasedepositionatlowtemperature，whicharecharacte

7、rizedbymicroscope，SEMandSPMCompared、ⅣitllcommonliquidphasedepositionandSolGelmethodtherearenoflawsandholesonthefilms，whosesinfaceareplaneTheSPMshowedthefilmshavethestructureofislandsandtheaveragesizeofsecondparticlesare1

8、0nlnTheTi02nanoparticleshaveuniformsizedistributionThismethodreducesthereuniteThephenolisusedasthemodelofphotocatalyticreactionThephotocatalyticactivityofdifferentmethodsandsizesareinvestigatedinthephenolsolutionThemecha

9、nismofphenoldegradationarestudiedResultsshowedthephotocatalyticactivityhasinverseproportionwiththeparticlesizenephotocatalyticactivityishigherbymicroemulsionmethodThedegradationofphenolreachesto80％in3hourswi吐ltheparticle