混晶tio,2光催化分解水制氫及可見光響應光催化劑的研究

1、廈門大學碩士學位論文混晶TiO光催化分解水制氫及可見光響應光催化劑的研究姓名：張鵬申請學位級別：碩士專業(yè)：工業(yè)催化指導教師：賈立山20080701AbstractPhotocatalyticwatersplittingusingsolarenergyhasreceivedagreatdealofattentionsinceithasbeenconsideredasoneofthepotentialwaystoprovidecleanan

2、drenewableenergyofH2Amongthephotocatalyticmaterialsbeingstudied，Ti02isoneofthemostpromisingphotocatalystWhileitsapplicationWaslimitedforitspoorefficiencyofphotocatalyticwatersplittingtoH2anditcannotbeexcitedbyvisibleligh

3、tTogetahigherefficiencyofphotocatalyticH2evolutionOVerTi02andfindpropervisiblelightrespondingwatersplittingphotocatalyticmaterials，thisthesisinvestigatedthefactorsaffectthephotocatalyticactivityofTi02，theinfluenceofrutil

4、ephasecontentinnanoTi02，thephotocatalyticH2evolutionOVerCdopedTi02preparedbybacilluslicheniformis(R08)leachingsolutionmodifyingthepreparationandphotocatalyticactivityofnewtypevisiblelightrespondingphotocatalyticwaterspli

5、ttingmaterialLa202(C03)basedCoO／Ni，whichareasfollows，1PhotocatalyticH2evolutionOVerPt／Ti02bywatersplittingasNa2Sorformaldehydebeingpresentassacrificialreagentswereinfluencemarkedlybyreactiontemperature：therateofH2evoluti

6、onincreasedquicklywithreactiontemperatureThepossiblereactionmechanismshowsthatincreasingoftemperatureacceleratedthehydrolysisofNa2SandthusacceleratedthephotochemicalH2evolution，whileitinhibitedthereversereactionasformald

7、ehydewasused2Nano—Ti02sampleswithvariouscontentofrutilewerepreparedbyadjustingthebakingtemperatureTheeffectofrutilecontentWasinvestigatedandpossiblemechanismWassuggestedToavoidtheinfluenceofparticlesize，anovelmethodwhich

8、takethemixtureofTICl4andTi(OC4H9)4asprecursorWasappliedandrutilecontent—controllablenanoTi02sampleswithevenparticlesizeweresynthesizedTheirphotocatalyticactivityconfirmedthemechanism3Togethigherphotocatalyticactivityunde

9、rvisiblelightirradiationforwatersplitting，F(xiàn)edopedTi02weresynthesizedandcharacterized，andtheiractivityweredeterminedTheresultsshowthat，F(xiàn)eimprovetheabsorptionofTi02onvisiblelightmarkedlyandpromotetheH2evolutionAs2(叭)％FeWas