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1、ARTICLEAGreenApproachtotheSynthesisofGrapheneNanosheets†,‡††††,Hui-LinGuo,Xian-FeiWang,Qing-YunQian,Feng-BinWang,andXing-HuaXia*†KeyLaboratoryofAnalyticalChemistryforLifeScience,SchoolofChemistryandChemicalEngineering,NanjingUniversity,Nanjing210093,China,and‡KeyLaboratoryo
2、fSyntheticandNaturalFunctionalMoleculeChemistry,CollegeofChemistryandMaterialsScience,NorthwestUniversity,Xi’an710069,Chinaraphenenanosheetisaone-atom-thickplanarsheetofsp2-bondedABSTRACTGraphenecanbeviewedasanindividualatomicplaneextractedfromgraphite,asunrolledGcarbonatom
3、s,whicharedenselysingle-walledcarbonnanotubeorasanextendedflatfullerenemolecule.Inthispaper,afacileapproachtothepackedinahoneycombcrystallattice,at-synthesisofhighqualitygraphenenanosheetsinlargescalethroughelectrochemicalreductionofexfoliatedtractingtremendousattentionfromb
4、othgraphiteoxideprecursoratcathodicpotentials(completelyreducedpotential:1.5V)isreported.Thismethodfundamentalresearch(whereitformsaisgreenandfast,andwillnotresultincontaminationofthereducedmaterial.Theelectrochemicallyreducednew,unexpectedbridgebetweencon-graphenenanoshee
5、tshavebeencarefullycharacterizedbyspectroscopicandelectrochemicaltechniquesindensedmatterandquantumfieldtheory)andpossibleapplications.1Thisuniquecomparisontothechemicallyreducedgraphene-basedproduct.Particularly,FTIRspectraindicatethatavarietynanostructureholdsgreatpromisef
6、orpo-oftheoxygen-containingfunctionalgroupshavebeenthoroughlyremovedfromthegraphiteoxideplaneviatentialapplicationsinmanytechnologicalelectrochemicalreduction.Thechemicallyconvertedmaterialsarenotexpectedtoexhibitgraphene’selectronicfieldssuchasnanoelectronics,2,3sensors,4,5
7、propertiesbecauseofresidualdefects.Indeed,thehighqualitygrapheneacceleratestheelectrontransferrateinnanocomposites,6,7batteries,8supercapaci-dopamineelectrochemistry(Episassmallas44mVwhichismuchsmallerthanthatonaglassycarbontors,andhydrogenstorage.9Inthiscontext,electrode)
8、.Thisapproachopensupthepossibilityforassemblinggraphenebiocompositesforelectrocata
