基于石墨烯纳米复合材料的生物传感器分析

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1、英文摘要current—time(i-t)curvemethod．WeinvestigatedtheeffectofPBandRGOonthesensitivityofsensor,anddiscussedanti．interferenceandclinicalapplicationofthesensor．PartII：Constructionofpesticidebiosensorbasedonprussianblue／graphene—goldnanoparticals-p—cyclodextrin(PB／RGO-AuNPs。p。CD)compositemembran

2、e．Step1：ElectrochemicaldepositionofRGO-AuNPs-p—CDmembraneontheelectrodewerecarriedoutbycontrolledpotentialmethod．Step2：ElectrochemicaldepositionofPB．CSmembraneonthemodifiedelectrodewascarriedoutbyCV．Step3：TheCSwithgoodbiologicalcompatibilitywasusedasacarrierforthehi曲lyefficientimmobilizat

3、ionofAChE．OrganophosphoruspesticideandcarbamatepesticidesareusuallydetectedbasedonmeinhibitionoftheAChEbythesecompounds．TheinhibitionoforganophosphoruspesticideandcarbamatepesticidesonAChEresultsindecreaseofproducedthiocholine，andtheoxidationcurrentdecreasesaccordingly．Theorganophosphorus

4、pesticideandcarbamatepesticidesCanbedetectedbymeasuringthedeclineoftheoxidationcurrentofthiocholine．Theelectrodesurfacewascharacterizedbyscanningelectronmicroscopy(SEM)method．Thecurrentresponsesofthebiosensortoacetylthiocholinechloridewereresearchedbythei-tcurvemethod．Theeffectofinhibitio

5、ntime，AChEreactivation，stability,selectivityandrepeatabilityofsensorwerediscussed，andfinallythebiosensorwasusedtodetecttherecoveryoftherealsamples．Results：1Preparation，characterizationofgrapheneanditsapplicationinglucosebiosensors1．1Graphenepreparedbythisexperimentwasstableandcouldbedirec

6、tlyusedinthemodificationoftheelectrodewithoutanytreatment．AsshowninXRD，thecrystalstructureofgraphitewasdestroyed，whilecrystalintegritydeclinedandtheflakelayerbecamesmallerduringtheredoxprocess，英文摘要．indicatingthegraphenewasobtained．Ultravioletabsorbancespectrashowedthattheoxygen．containing

7、functionalgroupsonthesurfaceofthegrapheneoxidewasreducdedgraduallyandⅡ-JIconjugatesystemwasrestored，whichdemonstratedthesuccessfulpreparationofgrapheneonceagain．TheelectroconductivityofdifferentmodifiedelectrodessurfacewascharacterizedbvCV．Theresultsshowthattherespo