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《CdS纳米复合物电致化学发光及其H_2O_2传感应用.pdf》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、第27卷第10期无机化学学报Vo1.27No.102011年10月CHINESEJOURNALOFINORGANICCHEMISTRY2005.2012普鲁士蓝/CdS纳米复合物电致化学发光及其H2o2传感应用史传国,2徐静娟1陈洪渊,11南京大学生命分析化学国家重点实验室,南京210093)(南通大学化学化工学院,南通226019)摘要:通过一定体积比的CdS和普鲁士蓝(PB)胶体纳米溶液的简单混合,制备了PB/CdS纳米复合物。在共反应剂存在条件下,PB纳米粒子含量较低时,在ITO电极上CdS纳晶的电致化学发光(ECL)强度可以增强3倍左右。P
2、B纳米粒子含量较高时,CdS纳晶的ECL强度则显著降低。详细讨论了PB纳米粒子对CdS纳晶ECL影响的机理。PB纳米粒子对CdS纳晶的ECL增强可用于H2O2传感。该传感器对H2O2响应的线性范围为3.3x10~-6.5x10tool·L-=0.9992),检测限为12nmol·L-(S/N=3),传感器具有良好的稳定性和重现性。关键词:普鲁士蓝;CdS纳晶;电致化学发光;H202中图分类号:0657.1文献标识码:A文章编号:1001—4861(2011)10—2005.08PrussianBlue/CdSNanocomposite:Enhanc
3、edElectrochemiluminescenceandApplicationinH2o2SensingSHIChuan-GuoXUJing—JuanCHENHong.Yuan,(StateKeyLabofAnalyticalChemistryfor£ifeScience,SchoolofChemistryandChemiz.al西聊e,NanjingUniversity,Nanjing210093,China)fCollegeofChemistry&ChemicalEn#neenn~NantongUniversity,Nantong,~angs
4、u226019.China)Abstract:Prussianblue(PB)/CdSnanocompositeswerepreparedundersimpleuhrasonicationmixingofthetwoseparatedcolloidalsolutionsatadesiredvolumeratio.AtlowamountofPBnanoparticlesfNPs)themaximumenhancementfactorofabout3.foldinelectrochemiluminescencefECL1intensityofCdSna
5、nocrystalsfNCs)wasobtainedattheindiumtinoxidefITO1electrodeinthepresenceofCO.reactant.Onthecontrary,athighamountPBNPs.theECLintensitywasreducedsignificantly.TheinfluencesofPBNPstoCdSNCsarediscussedindetail.TheapplicationoftheenhancedECLfromthenanocompositewasstudiedfortheH202s
6、ensing.TheresultingECLsensorshowsalinearresponsetotheconcentrationofH202rangingfrom3.3x10to6.5xlOmo卜l『=0.9992)withadetectionlimitof12nmol·T『0fS/N=31andgoodstabilityandreproducibilitv.Keywords:prussianblue;CdSnanocrystals;electrochemiluminescence;H2O2Electrochemiluminescence,al
7、SOknownasandsimpleoperationprocess【l】.Recently,CdSelectrogeneratedchemiluminescence(ECL),isameansnanocrystals(NCs)hasgeneratedenormousinterestsinofconve~ingelectricalenergyintoirradiativeenergyatECLanalysisduetoitseasypreparation,widerangeofanelectrode.Asavaluabledetectionmeth
8、od,ECLisanalytes,lowoxidationpotential,andgoodchemicalbecomin
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