孔道結(jié)構(gòu)含多酸復(fù)合光催化材料的制備及其性能研究.pdf

1、東北師范大學(xué)碩士學(xué)位論文孔道結(jié)構(gòu)含多酸復(fù)合光催化材料的制備及其性能研究姓名：李莉申請學(xué)位級別：碩士專業(yè)：分析化學(xué)指導(dǎo)教師：郭伊荇20040601A85TRACTABSTRACTThreetypesofthesolidphotocatalyticmaterialssuchashybridcatalystK5M(H20)PW039APSSiO2(abbreviatedPWMAPSSiO2M=NiCoAPS=(C2H50)3SiCH2CH2C

2、H2NH2Si02=MCM48MCM41SIO7)mesoporouscompositematerialH3PWI204oTiO2(amorphous)andH6P2W8062TiO2(anatasephase)werepreparedbytheselfassemblymethodsolgelandprogrammedtemperaturehydrothermalmethods.Assynthesizedmaterialsarenove

3、lwaterinsolublephotochemicallyactiveandporous.UVvisdifusereflectancespectra(UVDRS)infrared(IR)spectraramanspectra“PMASNMRICPAESpowderXraydiffraction(XRD)TEMandnitrogenadsorptionanalysiswereusedtocharacterizethecompositio

4、nstructuremorphologyandsurfacephysicochemicalpropertiesofaspreparedsolidphotocatalyticmaterialsindicatingthattheprimarypolyoxometalate(POM)structuresremainedintactinaspreparedcompositesandthecompositesexhibitedporousstru

5、ctures.TheaverageporesizeofthehybridcatalystPWMAPSSiqis5.440.3runtheaverageporesizeofthemesoporouscompositematerialH3PW1204aTiO2is3.06nmandH6P2W18062TiO2(anatasephase)havebimodalporesystems(micromesoporosity)withporesize

6、at0.6and4.0nm.InadditioncomparedwithstartingPOMsBETsurfaceareasofthesolidphotocatalyticmaterialshavebeenimprovedinthediferentextents.Photocatalyticactivitiesofassynthesizedcompositeswerestudiedviathefollowingmodelreactio

7、nse.g.photodegradationoftheaqueousdyethepesticidehexachlorobenzene(HCB)andmethylparathion(MPT).IthasshownthataqueousorganicscanbedegradedbythehybridcatalystPW1MAPSSiO2undernearUVirraditionandbymesoporousH3PW1204OTiO2(amo