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1、AppliedCatalysisB:Environmental165(2015)503–510ContentslistsavailableatScienceDirectAppliedCatalysisB:Environmentaljournalhomepage:www.elsevier.com/locate/apcatbTemplate-freesynthesisofporousgraphiticcarbonnitridemicrospheresforenhancedphotocatalytichydrogengenerat
2、ionwithhighstabilityQuanaaabba,∗Gu,YusenLiao,LishaYin,JinlinLong,XuxuWang,CanXueaSchoolofMaterialsScienceandEngineering,NanyangTechnologicalUniversity,50NanyangAvenue,Singapore639798,SingaporebResearchInstituteofPhotocatalysis,StateKeyLaboratoryofPhotocatalysisonEn
3、ergyandEnvironment,FuzhouUniversity,Fuzhou350002,PRChinaarticleinfoabstractArticlehistory:Graphiticcarbonnitridemicrospherephotocatalystswerepreparedthroughatemplate-freesolvother-Received19August2014malapproachwithpost-heatingtreatment.Structuralcharacterizationre
4、sultsrevealthattheas-preparedReceivedinrevisedform8October2014samplehasthesamecompositionasbulkg-C3N4,butappearsashierarchicalmicrosphereswith16October2014AcceptednanoporousAvailablesurfaces.Comparingtothebulkg-C3N4,theseporousmicrospheresexhibitnarrowedonline27Oct
5、ober2014bandgapandlowerresistance,whichallowsmoreeffectivevisible-lightharvestingandmoreefficienttransportKeywords:andseparationofphotogeneratedchargecarriers.Consequently,weobservedhighrateofpho-tocatalyticPhotocatalysisH2productionandstrongerphotocurrentresponsesu
6、ndervisiblelightirradiation.Further,theCarbonlong-termphotocatalytictestprovedhighstabilityofthepreparednanoporousmicrosphereforH2nitridegeneration.Microspheres©2014ElsevierB.V.Allrightsreserved.SolvothermalmethodHydrogenproduction1.Introductiondesirabletodevelopat
7、emplate-freemethodforpreparingporousmicrospheresofgraphiticcarbonnitride.Graphiticcarbonnitride(g-C3N4)asametalfreepolymericSofar,themajorsyntheticstrategyofgraphiticcarbonnitridegen-◦C)semiconductorhasbeenwidelyusedforphotocatalyticH2isstillbasedonthehighertempera
8、ture(>400annealingoferationbecauseitisnon-toxic,lowcost,highstabilityandvisiblemolecularprecursorssuchasmelamineandurea,whichisnon-lightactive[1–
