混晶tio,2光催化分解水制氫及可見(jiàn)光響應(yīng)光催化劑的研究_第1頁(yè)
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1、廈門大學(xué)碩士學(xué)位論文混晶TiO光催化分解水制氫及可見(jiàn)光響應(yīng)光催化劑的研究姓名:張鵬申請(qǐng)學(xué)位級(jí)別:碩士專業(yè):工業(yè)催化指導(dǎo)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

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