氧化铁纳米材料的制备与其感应双氧水的分析

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1、万方数据江苏大学硕士学位论文AbstractElectrochemicalsensorhasattractedresearchers’attentionbecauseofitshighsensitivity,hi曲selectivity,lowcost,simpleequipmentandsmallvolume．Resentlyyears，numerousefficientsensorshavebeensuccessedprepared．However,mostofthesensors’filmsaremadefromenzymeorproteinandtheinherentdefectofe

2、nzymeandproteinlimittheapplication．Non·enzymesensorismorestablethanenzymeSenSOr，whichcauseitslongservicelife，highadaptivecapacityandhighstability．NanoFe203hashighinterfaceenergy,smallsizeandlargespecificsurfacearea,whichmakeithasexcellentsensibilityandapromisingmaterialinelectrochemicalsensingfield．

3、ThepreparednanoFe203viadifferentmethodsandgraphenewereimmobilizedontheGCEsurfacebychitosan，andtheelectrochemicalactivityofthemodifiedelectrodeshasbeentested．Theresultsisasfollows：1．Intheresearch，Fez03nanoparticles丽thsmallsizehavebeensucceedpreparedviasolidphasemethodwithsodiumlignosulphonateassurfac

4、eactiveagent．ThesamplesaretestedbyTG-DSC、FT-IR、XRD、FE—SEMandtheresultshowsthatdopinganaountof1．59，calcinationstemperatureat400。CmakethenanoFe203haveminimumsizeandlargestspecificsurfacearea．ThenthegrapheneandFe203arefixedatthesurfaceofGCEwiththechitosanascross—linkingagent．Andthesensoristestedwitllcy

5、clicvoltammetryandchronoamperometry．TheG．Fez03小mS．CS／GCEelectrodeshowshighsensitivity(84．329AraMlera-2)，widedetectionrange(0．001—6．0raM)，lowdetectionlimit(1．1gM)，excellentanti—interferencecapability,repeatabilityandstability．2．Inthispart，ironoxidenanoparticles埘也hi曲electrocatalyticactivityforhydrogen

6、peroxideweredevelopedbyliquidphase-basedultrasonic·assistedmethod．Theresultsshowedthatultrasonic—assistedcanbeeffectivelydecreasesizeofFez03．Wealsostudythesodiumlignosulphonate’relationship、航mthecrystalform．sizeandSOon．ri7l,rhentheamountofsodiumlignosulphonateisO．1g，thesizeofthesampleissmallestandun

7、iformmorphology．TheamountofsodiumlignosulphonateisO．1gandthecalcinationtemperatureat400"CmaketheG-Fe203-NPS-CS／GCEhavethebestelectrochemicalcharacteristics．Thesensitivityis111万方数据氧化铁纳米材料的制备及其感应双氧水的研究3