ZnS-ZnIn-,2-S-,4-制備與表征及其可見光催化葡萄糖制氫行為.pdf

1、南昌大學碩士學位論文ZnSZnInS制備與表征及其可見光催化葡萄糖制氫行為姓名：王劍霞申請學位級別：碩士專業(yè)：無機化學指導教師：李越湘20100617ABSTRACTABSTRACTInthisthesis，wepreparedZnScoatedZnIn2S4(ZnS—Znln2S4)photocatalystsbytwomethods，investigatedphotocatalytichydrogengenerationoverZn

2、SZnIn2S4usingglucoseasanelectrondonor，anddiscussedthepossiblemechanismThereseachworkiscomposedoftwoparts：InthefirstpartZnScoatedZnIn2S4(ZnSZnln2SOphotocatalystswerepreparedinmethanolbyafacilesolvothermalprocessThephotoca

3、talystswerecharacterizedbyscanningelectronmicroscopy(SEM)，transmissionelectronmicroscopy(TEM)，energydispersivespectrometer(EDS)，XraydiffractionfXRD)，UVvisdiffusivereflectancespectroscopy(DRS)，BET，andelectrochemicalmeasur

4、ementsZnSZnin2S4photocatalystshadhexagonalcrystalphaseandcomplexmorphologysuchasmicro—spheres，microtubesandmicro—ribbonsUsingglucoseasanelectrondonor，photocatalytichydrogengenerationoverPt／ZnSZnIn2S4wasinvestigatedTheres

5、ultsshowedthatphotoactivityofhydrogengenerationoverPt／ZnSZnIn2S4WasimprovednotablywithsimultaneousdegradationofglucoseThefactorswhichaffectedphotocatalytichydrogengenerationsuchascomposffionofZnSZnIn2S4，initialconcentrat

6、ionofglucoseandconcentrationofNaOH，wereinvestigatedThepreparedZnSZnIn2S4photocatalystsexhibitedbetteractivityforhydrogengenerationthanpureZn／n2S4，whichmaybeattributedtoenhancementoftheadsorptionofglucosebyZnSontheZnIn2S4

7、surfaceTheeffectofglucoseconcentrationonthehydrogengenerationrateisconsistentwithaLangmuirmodelAlargenumberofOHradicalsWaSgeneratedintheZnSZrdn2S4system，whichhavebeentestedbyaTAFL(terephthalicacidfluorescence)methodAposs

8、iblemechanismwasdiscussedInthesecondpartZnScoatedZnIn2S4(znSZnln2S4)photocatalystswerepreparedbyafacilehydrothermalmethodThephotocatalystswerecharacterizedbyscanningelectronmicroscopy(SEM)，Xraydiffraction(XRD)，UVvisdiffu