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1、ARTICLETiO2GrapheneNanocompositesforGas-PhasePhotocatalyticDegradationofVolatileAromaticPollutant:IsTiO2GrapheneTrulyDifferentfromOtherTiO2CarbonCompositeMaterials?†,‡††,‡†,‡,YanhuiZhang,Zi-RongTang,XianzhiFu,andYi-JunXu*†CollegeofChemistryandChemicalEngineering,FuzhouUniversity,Fuzhou
2、350108,People’sRepublicofChina,and‡StateKeyLaboratoryBreedingBaseofPhotocatalysis&CollegeofChemistryandChemicalEngineering,FuzhouUniversity,Fuzhou350002,People’sRepublicofChinarapheneisarisingstaronthehori-zonofmaterialsscienceandcon-ABSTRACTThenanocompositesofTiO2graphene(TiO2GR)havebe
3、enpreparedviaafacilehydrothermalGdensedmatterphysics.1ThisreactionofgrapheneoxideandTiO2inanethanolwatersolvent.WeshowthatsuchaTiO2GRnanocompositestrictlytwo-dimensionalmaterialexhibitsexhibitsmuchhigherphotocatalyticactivityandstabilitythanbareTiO2towardthegas-phasedegradationofoutstan
4、dingmechanical,thermal,optical,benzene,avolatilearomaticpollutantinair.ByinvestigatingtheeffectofdifferentadditionratiosofgrapheneandelectricalpropertiesandhasindeedonthephotocatalyticactivityofTiO2GRsystematically,wefindthatthehigherweightratioinTiO2GRwillspurredimmenseinterestindesigni
5、ngnovelgraphene-basedmaterialsforavari-decreasethephotocatalyticactivity.Analogousphenomenonisalsoobservedfortheliquid-phasedegradationofetyoftechnologicalapplicationssuchasdyesoverTiO2GR.Inaddition,thekeyfeaturesforTiO2GRincludingenhancementofadsorptivityofpollutants,nanoelectronics,bi
6、osensing,polymercom-lightabsorptionintensity,electronholepairslifetime,andextendedlightabsorptionrangehavealsobeenposites,H2productionandstorage,interca-foundinthecompositeofTiO2andcarbonnanotubes(TiO2CNT).ThesestronglymanifestthatTiO2GRisinlationmaterials,drugdelivery,supercapaci-esse
7、ncethesameasotherTiO2carbon(carbonnanotubes,fullerenes,andactivatedcarbon)compositematerialstors,andcatalysis.112TitaniumdioxideonenhancementofphotocatalyticactivityofTiO2,althoughgraphenebyitselfhasuniquestructuralandelectronic(TiO2)iswell-knownandthemostinvesti-
