Synthesis of graphene-basednanosheetsviachemicalreduction of exfoliated graphite oxide

《Synthesis of graphene-basednanosheetsviachemicalreduction of exfoliated graphite oxide》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、Carbon45(2007)1558–1565www.elsevier.com/locate/carbonSynthesisofgraphene-basednanosheetsviachemicalreductionofexfoliatedgraphiteoxideaaaaSashaStankovich,DmitriyA.Dikin,RichardD.Piner,KevinA.Kohlhaas,cccAlfredKleinhammes,YuanyuanJia,YueWu,b,*a,*SonBinhT.Nguyen,RodneyS.RuoffaDepartmentofMec

2、hanicalEngineering,NorthwesternUniversity,2145SheridanRd.,Evanston,IL60208-3133,USAbDepartmentofChemistry,2145SheridanRd.,Evanston,IL60208-3113,USAcDepartmentofPhysicsandAstronomyandCurriculuminAppliedandMaterialsSciences,UniversityofNorthCarolina,ChapelHill,NC,27599-3255,USAReceived17Ja

3、nuary2007;accepted19February2007Availableonline6March2007AbstractReductionofacolloidalsuspensionofexfoliatedgrapheneoxidesheetsinwaterwithhydrazinehydrateresultsintheiraggregationandsubsequentformationofahigh-surface-areacarbonmaterialwhichconsistsofthingraphene-basedsheets.Thereducedmat

4、erialwascharacterizedbyelementalanalysis,thermo-gravimetricanalysis,scanningelectronmicroscopy,X-rayphotoelectronspectroscopy,NMRspectroscopy,Ramanspectroscopy,andbyelectricalconductivitymeasurements.Ó2007ElsevierLtd.Allrightsreserved.1.Introductionlets/nanoplateletsfromtheexpandedmateri

5、al(ballmillingorexposuretoultrasound)hasbeenrecentlydemonstratedGraphite-likenanoplateletshaverecentlyattracted[6–13].Althoughthissimplemethodhasbeenappliedattentionasaviableandinexpensivefillerincompositeonalargescaletocommerciallyavailablesulfuricacid-materials[1–3]thatcanbeusedinmanyen

6、gineeringappli-intercalatedgraphite,itneverresultsincompleteexfoliationcations,giventheexcellentin-planemechanical,structural,ofgraphitetothelevelofindividualgraphenesheets.Thethermal,andelectricalpropertiesofgraphite[4].Theseextentofthermalexpansion(andthereforetheplateletexcellentprope

7、rtiesmayberelevantatthenanoscaleifthickness)isdependentonthetypeofgraphiteusedandgraphitecanbeexfoliatedintothinnanoplatelets,andevenontheintercalationprocedure[14,15].Withfewexceptionsdowntothesinglegraphenesheetlevel[5].[3],thegraphitenanoplateletsobtainedviathisprocess