Sol—Gel Derived Carbon Ceramic Electrode Bulk—Modified with Tris(1,10—phenanthroline—5,6—dione) iron (Ⅱ)Hexafluorophosphate and Its Use as an Amperometric Iodate Sensor

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摘要 Asurface-renewabletris(1,10-phenanthroline-5,6-dione)iron(Ⅱ)hexafluorophosphate(FePD)modifiedcarbonceramicelectrodewasconstructedbydispersingFePDandgraphitepowderinmethyltrimethoxysilane(MTMOS)basedgels.TheFePD-modifiedelectrodepresentedpH-dependentvoltannetricbehavior,anditspeakcurrentswerediffusion-controlledin0.1mol/LNa2SO4+H2SO4solution(pH=0.4).Inthepresenceofiodate,clearelectrocatalyticreductionwaveswereobservedandthusthechemicallymodiffiedelectrodewasusedasanamperometricsensorforiodatencommonsalt.Thelinearrange,sensitivity,detectionlimitandresponsetimeoftheiodatesensorwere5×10^-6-1×10^-2mol/L,7.448μA·L/mmol,1.2×10^-6mol/Land5s,respectively.Adistinctadvantageofthissensorisitsgoodreproducibilityofsurface-renewalbysimplemechanicalpolishing.
机构地区 不详
出处 《中国化学:英文版》 2002年2期
出版日期 2002年02月12日(中国期刊网平台首次上网日期,不代表论文的发表时间)
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