一些纳米复合材料在电化学传感器中的应用分析

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1、forreductionofDOandanexcellentabilitytoresistinterferencefrommacromoleculecontaminants．ThedetectionofDOwasperformedusingthenanocompositematerialmodifiedelectrode．ThecalibrationcurvewaslinearoveraDOconcentrationrangeof0．112—5．78mM．2．Poly(methyleneblue)dopedsilicananocomposites(PMB@Si02

2、(nano))onglassycarbonelectrode(GCE)weresynthesizedbasedonatwo—stepelectropolymerization．Comparedwithpoly(methyleneblue)film，PMB@Si02(nall。1hadmoreadvantagesinfacilitatingelectrontransferbetweenglucoseoxidase(GOx)andtheelectrodesurface．GOximmobilizedonPⅧ@Si02(nan。)underwentadirectandre

3、versibleelectrochemicalreactioninvolvingtwo—electronandtwo—protonexchange．Areagentlessglucosebiosensorusingthenanocompositemodifiedelectrodewasdeveloped．ThecalibrationcurvewaslinearoveraglucoseconcentrationrangeofO．01—1．11mM．TheapparentMichalis-Mentenconstant，Km，fortheenzymaticreactio

4、nwasO．50mM．Thedevelopedbiosensorpresentedgoodaccuracy，repeatability，reproducibilityandstabilityaswellasanexcellentabilitytoresistinterferencefromascorbicacidanduricacidspecies．TheinvestigationindicatesthatPMB@Si02(：nano)hasagoodpotentialapplicationinconstructionofthethird—generationen

5、zymebiosensorasaconductingmatrixmaterial．3．Goldnanoparticles(AuNPs)wereelectrochemicallydepositedoncarbonnanotube(CNTs)modifiedglassycarbonelectrode(GCE)．Cysteine／AuNPs／CNTs／GCEwaspreparedafteradsorptionofDL—cysteinehydrochloride．TheCu计@DL—cysteinecomplexcouldbeformedontheelectrodesur

6、faceinthepresencecopperions．TheelectrochemicalmeasurementsoncopperionswereperformedbasedontheredoxreactionoftheimmobilizedCuH．ThefactorsinfluencingCu2+-detection，suchasthedepositiontimeofAuNPs，theTVconcentrationofDL—cysteine，theaccumulationtimeofCu2+，pH，etc．wereinvestigated，respective

7、ly．Copperionsinsolutionweredetectedusingdifferentialpulsevoltammetry．Underoptimumconditions，thesignalsdependedlinearlyontheCu2+concentrationintherangeofO．1～1mMwithadetection1imitof60nM．Keywords：nanocomposites，silica，poly(methyleneblue)，goldnanoparticles，carbonnanotubes，dissolvedoxygen

8、，gluc