平面雙核酞菁鈷及其摻雜聚苯胺膜修飾電極研究.pdf

1、東北師范大學(xué)碩士學(xué)位論文平面雙核酞菁鈷及其摻雜聚苯胺膜修飾電極研究姓名：曹勇申請學(xué)位級別：碩士專業(yè)：分析化學(xué)指導(dǎo)教師：郭黎平20050501Abstract111esynthesisandelectrochemicalpropertiesofaplanarbinuclearcobaltphthalocyanine(biCoPe)modifiedelectrodewerestudiedinthispaperAlso，afterincorp

2、orationofbi—CoPeintopolyaniline(PAn)weinvestigatedtheeffectoftheethanolconcentrationonpropertiesofbiCoPcPAnmodifiedelectrodesInthefirstpartofthiswork，westudiedtheelectrochemicalbehaviorofbiCoPeadsorbedonglassycarbon(oc)e

3、lectrodesTheelectrochemicalgrowthusingcyclicvoltammetry(CV)wascarriedoutInthesecond，theeffectoftheconcentrationofethanolwasinvestigatedbyCvUV—visspectroscopyFTIRspectroscopyscanningelectronmicroscoperSEM)Thefollowingresu

4、ltshavebeenfound：(1)Thechemicallymodifiedelectrodeshowsstrongelectrocatalyticactivityforoxygendissolvedinsolutionandfourelectronoftwostepsreductionof02toH20whenpHvaluesaregreaterthan3seemstobethemechanismTwopeakpotential

5、scorrespondingteductionof02toH202andH202toI120are一155mVand一467mVrespectivelyinB—RbuffersolutionwithpH41Theplanarbinuclearcobaltphthalocyanineadsorbedonglassycarbonelectrodeexhibitssubstantialelectrocatalyticactivityforth

6、eoxidationof2一mereaptoethanolr2ME)Thepeakpotentialforoxidationof2mercaptoethanolwas200mVatpH12(2)Theconcentrationofethanolaffectstheelectropolymerizationrate，surfacemorphologyandelectrocatalyticactivitiesofPAnfilmsgrowni

7、nthepresenceofbiCoPeTheethanoladditionsenhancetheelectropolymerizationrateandleadtothenetchainstructureofPAnfilmItisfoundthattheelectrocatalyticactivityofbi—CoPePAnmodifiedelectrodestowardsoxygenreductionishigherinpresen