直流电电化学沉积镍制备原位生长碳纳米管化学修饰电极.pdf

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1、物理化学学报(WuliHuaxueXuebao)1214ActaPhys．-Chim．Sin．，2010，26(5)：1214—1218May[Article】www．whxb．pku．edu．ca直流电电化学沉积镍制备原位生长碳纳米管化学修饰电极何正文江奇，杨荣亓鹏赵斐袁华赵勇1,2(西南交通大学超导研究开发中心，材料先进技术教育部重点实验室，成都610031；SchoolofMaterialsScienceandEngineering，UniversityofNewSouthWales，Sydney2052NSW，Australia)摘要：利用直流电电化学沉

2、积法将生长碳纳米管(CNT)的催化剂镍均匀地附着在石墨电极(GE)表面，再通过化学气相沉积法制备得到原位生长碳纳米管化学修饰电极(GSCNT—CME)．电化学沉积的金属镍和所制备的修饰电极分别用光学显微镜、扫描电子显微镜(SEM)和电子能谱(EDX)进行表征，所得修饰电极的电化学性能用【Fe(CN)6]a-／[Fe(CN)6]液进行表征．结果表明：经直流电电化学沉积，可以在石墨电极表面沉积一层致密的金属镍，能生长出管径均匀的碳纳米管，所制得的修饰电极具有良好的电化学响应灵敏性和准确性，可在电化学检测领域发挥重要的应用．关键词：电化学沉积；碳纳米管化学修饰电极；原

3、位生长中图分类号：0648；TM9I1PreparationofCarbonNanotubeChemicallyModifiedElectrodeviaGrowing／nsituMethodbytheDirectCurrentElectrochemicalDepositionNickelCatalystHEZheng-WenJIANGQi’YANGRongQIPengZHAOFeiYUANHuaZHAOYong。(1KeyLaboratoryofAdvancedTechnologiesofMaterials,MinistryofEducationofChina,

4、SuperconductivityResearchandDevelopmentCentre，SouthwestJiaotongUniversity，Chengdu610031，P．R．China；2SchoolofMaterialsScienceandEngineering,UniversityofNewSouthWales,Sydney2052NSW,Australia)Abstract：Grownsitucarbonnanotubechemicallymodifiedelectrode(GSCNT—CME)waspreparedbytheinsitugrow

5、thofcarbonnanotube(CNT)ontoapretreatedgraphiteelectrode(GE)viacatalyticchemicalvapordeposition．ThepretreatedGEwaspreparedbydirectcurrentelectrochemicaldepositionusinganickelcatalyst．ThedepositednickelandtheobtainedGSCNT．CMEwerecharacterizedbyopticalmicroscopy．scanningelectronmicrosco

6、py(SEM)．andenergydispersiveX—raydiffraction(EDX)．TheelectrochemicalperformanceoftheobtainedGSCNT—CMIEswerecharacterizedbycyclicvoltammetryusinga[Fe(CN)6】~-／[Fe(CN)6]solution．Resultsshowedthattherewasa1ayerofnickelonthepretreatedGEsurfaceaRerdirectcurrentelectrochemicaldepositionandCN

7、TwithuniforiltubediameterswerepresentonthesurfaceoftheGE．ThepreparedGSCNT—CMEhasgoodcurrentresponsesensitivityandgoodaccuracy．Itmaybeappliedinelectrochemicaltestingfield．Received：August27，2009；Revised：December25，2009；PublishedonWeb：February4，2010．Correspondingauthor．Email：iiangqi66@1

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