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ID:33211556
大小:6.35 MB
页数:77页
时间:2019-02-22
《氧化铁纳米材料的制备与其感应双氧水的分析》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
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
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