石墨烯的制備、表征及在電化學中的應用.pdf

1、南京師范大學碩士學位論文石墨烯的制備、表征及在電化學中的應用姓名：金娟申請學位級別：碩士專業(yè)：物理化學指導教師：蔡稱心20100518AbstractAbstractGraphene，arecentlydiscoveredcarbonnanomaterial誦tllcarbonatomstightlypackedintoatwodimensionalhoneycomblatticepossessesmanynovelanduniquep

2、hysicalandchemicalpropertiesbecauseofitsunusualmonolayeratomicstructureGraphenehasreceivedagreatdealofattentioninfundamentalandappliedresearchItsbasicstructureunitisbenzenesixmemberedringandiscurrentlyfoundasthethinnestt

3、wo—dimensionalmaterialTherearesomesynthesismethodsofgraphene，suchasmechanicalexfoliationmethod，graphiteoxidereductionmethod，chemicalvapourdeposition，epitaxialgrowthmethod，arcdischargemethod，organicsynthesismethodandSOonI

4、talsohasawiderangeofapplicationsinmodifiedelectrodes，chemicalpowersources，solarbatteries，catalysts，pharmaceuticalcarriersandgassensorsetcInthisthesis，grapheneissynthesizdbyusingsimplegraphiteoxide—reductionmethodandchara

5、cterizedwithFourierinfraredspectroscopy(FTIR)，Ramanspectroscopy(Raman)，Xraydiffraction(XRD)，transmissionelectronmicroscopy(TEM)andatomicforcemicroscope(AFM)Adetailedstudyisconductedontheinfluenceofsyntheticconditionsonth

6、emorphologyofgrapheneandgraphene／Aunanoparticlesnanocompsiteinelectrochemicalapplication碭emainresultsaresummarizedasfollows：1AstudyisconductedontheinfluenceofsyntheticconditionsonthemorphologyofgrapheneTheseconditionsinc

7、ludeoxidationtimeandultrasonictimeResultsindicatedthatsynthesisofgraphiteoxide，toagreatextentdeterminethesubsequentsynthesisofgrapheneoxideanddirectlyaffectthemorphologyofgrapheneOne—stepoxidationofthegraphitemakegraphen

8、eoxidelayersmixedwithblackparticulatemattersTheoxidationdegreeincreasesgraduallyalongwiththeoxidationtimeandaffectthelamellarspacingofgrapheneoxideTmsstudyrevealsthatgraphiteneedtwostepoxidationandthesecondstepplayaleadi

9、ngrole111eoptimalconditionis2hoursoxidationtimeAnotherimportantinfluencingfactorisultrasonictimernlelamellarspacingofgrapheneoxideisthickinashortultrasonictimeWiththeincreasingofultrasonictime，transverseareagraduallydecr