功能化单壁碳纳米管

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1、SyntheticMetals160(2010)2089–2098ContentslistsavailableatScienceDirectSyntheticMetalsjournalhomepage:www.elsevier.com/locate/synmetCovalentlinkingofethyleneaminefunctionalizedsingle-walledcarbonnanotubestocobalt(II)tetracarboxyl-phthalocyaninesforuseinelectrocatalysisTawandaMugadza,TebelloN

2、yokong∗ChemistryDepartment,RhodesUniversity,Grahamstown6140,SouthAfricaarticleinfoabstractArticlehistory:Inthispaper,wereportontheuseofethyleneamine(EA)side-wallfunctionalizedsingle-walledReceived8April2010carbonnanotubes(SWCNT)inthesynthesisofcovalentlylinkedcobalt(II)tetracarboxyl-Receive

3、dinrevisedform15June2010phthalocyaninecomplex(CoTCPc–EA–SWCNT(linked)),thecharacterizationofthelinkedcomplexAccepted27July2010andtheapplicationofthiscomplexintheelectrocatalyticoxidationofamitrole.UV–vis,Availableonline25August2010FTIR,TEM,RamanandXRDspectroscopieswereusedincharacterization

4、ofCoTCPc–EA–SWCNTcomplex,whilecyclicvoltammetry,rotatingdiscelectrode(RDE)voltammetry,chronoamperom-Keywords:etryandelectrochemicalimpedancespectroscopywereusedduringthecharacterizationofamitroleonSingle-walledcarbonnanotubesthemodifiedglassycarbonelectrode.Thermogravimetricanalysis(TGA)wasu

5、sedtoconfirmtheextendEthyleneamineoffunctionalisationofofSWCNTs.Thecatalyticrateconstantwas1.2×103M−1s−1andtheapparentelec-Cobalt(II)tetracarboxyl-phthalocyaninetronratetransferconstantwas3.0×10−5cms−1.Thelineardynamicrangewas1.0×10−5–1.6×10−4M,AmitroleVoltammetrywithasensitivityof∼0.76Amol−

6、1Lcm−2andalimitofdetectionof0.1Musingthe3notation.Impedancespectroscopy©2010ElsevierB.V.Allrightsreserved.1.IntroductionScheme1b).CoTCPc–EA–SWCNT(linked)wascharacterizedusingUV–vis,FTIR,RamanandX-raydiffraction(XRD)spectroscopiesSincetheirdiscoveryin1993[1,2],single-walledcarbonnan-andtra

7、nsmissionelectronmicroscopy(TEM).TheCoTCPc–EA–otubes(SWCNTs)havebecomeafocusofresearchactivitiesSWCNT(linked)productwasusedintheelectrochemicalchar-duetotheirexploitablechemicalandphysicalproperties.Appli-acterizationofamitrole,throughelectrochemicalimpe