二氧化鈦基空心球的制備及光催化性能.pdf

1、大連理工大學(xué)碩士學(xué)位論文二氧化鈦基空心球的制備及光催化性能姓名：汪瑾徽申請學(xué)位級別：碩士專業(yè)：功能材料化學(xué)與化工指導(dǎo)教師：趙宗彬20090601二氧化鈦基空心球的制備及光催化性能PreparationandPhoto—catalyticActivityofTi02HollowSpheresAbstractNowadays，thecreationofeffectivephotocatalyticmaterials晰t11largespec

2、ificsurfaceareahighcatalyticactivity，visible—light—respond，becomeahottopicinphoto—catalyticresearchThemodificationsofTi02photocatalystisstudiedwidely，suchasmetallicornon—metallicdopingnoblemetaldepositingaswellaSsupporte

3、dTi02Poroushollowspherematerials，core—shellstructurematerialsandmacroporousmaterialswithgoodstability，lowdensity，largespecificsurfaceareaandothercharacteristics，havepromisingapplicationsinthecatalyticreaction，optoelectro

4、nicdevices，andenvironmentalprotectionInthispapercombinedhydrothermalwitllSOgelandtemplatemethodsaseriesofTi02basedphotocatalystsweresuccessfullysynthesized，includingporoushollowspheres，coreshellstructureandmacroporousmat

5、erialsThestructures，morphologiesandcompositionsofthesampleswerecharacterizedbySEM，TEM，Xraydiffraction，TGASDTA，F(xiàn)TIRspectrometerandUVVisspectrophotometerThephotocatalyticactivitiesoftheproductswereevaluatedviathephotocatal

6、yticdegradationofmethylblueunderUVlightirradiationThemainresultsaresummarizedasfollows：1AsmartandcompactfloatingtypephotocatalyticreactorWasdesigned，謝tlltheadvantagesofuniformlightintensity，highlightutilizationandhighmas

7、stransferrate，reactiontimeautomaticcontrolling，samplingconvenience，safetyandreliabilityItCanbeusedtoinvestigatephotocatalystactivitiesandphotocatalyticreactionfactorsscientificallyandaccurately2Carbonaceousmicro—spherete

8、mplateswitIlrichoxygencontaininggroupsontheirsurfaceweresynthesizedunderhydrothermalconditionusingglucoseasstartingmaterialsZi02，W03andWdopedZi02poroushollowsphereswerepreparedthroughtemplatedepositionsurfacereactionmeth

9、odTheinfluenceofWcontentsandcalcinationtemperaturesonthecatalyticactivitesofWdopedTi02poroushollowspheresWassystematicallyexaminedZi02macroporouscatalystWaspreparedbySO—gelmethod，andtherelationshipbetweenitsphotocatalyti

10、cactivityandtheamountofcarbonmicrospheresusedwasalsoinvestigated3Ag@Ccoreshellmicro—sphereswithrichoxygen—containinggroupsontheirsurfaceweresynthesizedunderhydrothermalconditionusingglucoseandAgN03asstartingmaterialswiul

11、Ag@Castemplates，deposition—surfacereactionWasusedtoprepareAg／Zi02，Ag／AgCl／Ti02andAg／W03poroushollowspheres，whileSO—gelmethodWasusedtoprepareAg／NiO，Ag／Sn02andAg／W03macroporousmaterials4Monodispersepolystyrene(PS)microsphe