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1、电纺论文：纳米纤维修饰电极的制备及其电催化性质研究【中文摘要】本论文采用静电纺丝技术制备了纳米纤维修饰的氧化铟-氧化锡(ITO)电极,然后在纤维上面修饰不同物质,研究了它们的电化学和电催化行为,具体内容如下:1.采用静电纺丝技术制得壳聚糖(CS)纳米纤维修饰的ITO电极。首先在电极上面恒电位电沉积聚苯胺(PANI),制备了PANI/CS纳米纤维修饰的ITO电极,该电极对亚硝酸根的催化活性较高,灵敏度为27.77μA/mM,最低检出限为0.45μM(信噪比为3)。其次,在有聚苯乙烯磺酸钠(PSS)存在的条件下,在CS纳米纤维修饰的ITO电极上恒电位电沉积P
2、ANI,制备了PSS-PANI/CS纳米纤维修饰的ITO电极,研究了该电极在中性条件下的电化学行为,结果显示,掺杂PSS的PANI在中性条件下仍存在氧化【英文摘要】Inthispaper,theindiumtinoxide（ITO）electrodewasmodifiedwithchitosan（CS）orcelluloseacetate（CA）nanofibersbyelectrospinningmethod.Afterthat,differentsubstancessuchasPolyaniline（PANI）,P2Mo18,andprussianb
3、luewereadsorbedonthoseeletrodes,respectively.1.Wefirstmadechitosannanofibersmodifiedelectrodebyelectrospinningtechnique.PANIwaselectrodepositiedonthemodifiedITO.ThePANI/CSnanofibersmodifiedelectrodeshowsexcellentelectrocalalyticablititytowardsnitrite.Thesensitivityis27.77μA/mMand
4、thelowestdetectionlimitis0.45μM（S/N=3）.Thenweintroducedpoly（styrenesulfonate）（PSS）intopolyanilineviaelectrochemicalpolymerizationofanilineinthepresenceofPSSonCSnanofibersmodifiedelectrode.TheredoxactivityoftheobtainedPSS-PANI/CSnanofibersmodifiedelectrodecanbeshiftedtoneutralcond
5、itionbecauseoftheassemblingofPSS.Moreover,italsoshowsexcellentelectrocatalyticablititytowardsDA.Thesensitivityis81.48μA/mMandthelowestdetectionlimitis0.70μM（S/N=3）,whichoffersgreatpromiseforbiosensing.2.TheITOelectrodemodifiedbyCSnanofibersweremadebyelectrospinning.α-[P2Mo18O62]6
6、-（P2Mo18）wasimmobilizedontheCSnanofibersbyelectrostaticinteraction.Inordertoprovethesuperiorityoftheelectrode,wemadeP2Mo18/CSmembranemodifiedelectrodealso.WeusedamperometrytostudyelectrocatlyticactivityofP2Mo18/CSnanofibersandmembrancemodifiedelectrode.TheresultshowsthatP2Mo18/CS
7、nanofibersmodifiedelectrodehashigherelectrocatalyticablititytowardsnitritethanP2Mo18/CSmembrancemodifiedelectrode.ThesensitivityofP2Mo18/CSnanofibersmodifiedelectrodeis73.18μA/mMandthelowestdetectionlimitis0.34μM（S/N=3）.3.TheCAnanofibersmodifiedITOelectrodewasmadebyelectrospinnin
8、g.InthepretectionofPDDA,nano-sizedprussi
