铁氰化钆修饰电极的制备及表征

电化学（中英文） ›› 2006, Vol. 12 ›› Issue (4): 382-387.

铁氰化钆修饰电极的制备及表征

石彦茂;杜攀;吴萍;周耀明;蔡称心;

南京师范大学化学系,南京师范大学化学系,南京师范大学化学系,南京师范大学化学系,南京师范大学化学系江苏南京210097,江苏南京210097,江苏南京210097,江苏南京210097,江苏南京210097

收稿日期:2006-11-28 修回日期:2006-11-28 出版日期:2006-11-28 发布日期:2006-11-28

Fabrication and Characterization of Gadolinium Hexacyanoferrate Modified Electrode

SHI Yan-mao,DU Pan,WU Ping,ZHOU Yao-ming,CAI Chen-xin~

(*)(Department of Chemistry,Nanjing Normal University,Nanjing 210097,Jiangsu,China

Received:2006-11-28 Revised:2006-11-28 Published:2006-11-28 Online:2006-11-28

摘要/Abstract

摘要： 应用电化学循环扫描法于玻碳电极表面沉积并形成铁氰化钆修饰电极(GdHCF/GC),扫描电镜(SEM)显示,有两种大小和外形明显不同的颗粒状GdHCF附着在电极表面.红外光谱表明,GdCHF的C≡N弯曲振动吸收峰出现在2062.5 cm-1处.循环伏安法测试表明,在0.2 mol/L NaC l溶液中,GdHCF/GC电极出现两对氧化还原峰,扫速为20 mV/s时,其氧化还原峰的式量电位分别为E0’(I)=192.5 mV和E0’(II)=338.5 mV.研究了不同支持电解质对GdHCF/GC电极电化学性能的影响,GdHCF对Na+离子有优先选择性.

关键词: 电沉积, 化学修饰电极, 铁氰化钆

Abstract: A new electroactive polynuclear inorganic compound of rare earth metal hexacyanoferrate,gadolinium hexacyanoferrate(GdCHF),was prepared by electrochemically deposition on the surface of a glassy carbon electrode with a potential cycling procedure.The result of SEM indicated that the GdHCF was in the form of particles adhered on the surface of electrode.There were two different shapes and sizes of GdHCF forming on the surface of electrode.FTIR spectrum of GdHCF showed a very strong and sharp peak,which located at 2062.5 cm~(-1) and corresponded to the stretching vibration of the C≡N group in the GdHCF.The cyclic voltammetric results indicated that the GdHCF/GC electrode exhibited two pairs of redox peaks with the formal potential of E~(0')(I) = 192.5 mV and E~(0')(II) = 338.5 mV,respectively.The effect of the different supporting electrolyte on the electrochemical characteristics of GdHCF was studied and the results showed that GdHCF had an ability of prior to select Na~(+) ion.

Key words: Electrochemical deposition, Chemically modified electrode, Gadolinium hexacyanoferrate

中图分类号:

O646.54

石彦茂;杜攀;吴萍;周耀明;蔡称心;. 铁氰化钆修饰电极的制备及表征[J]. 电化学（中英文）, 2006, 12(4): 382-387.

SHI Yan-mao,DU Pan,WU Ping,ZHOU Yao-ming,CAI Chen-xin~. Fabrication and Characterization of Gadolinium Hexacyanoferrate Modified Electrode[J]. Journal of Electrochemistry, 2006, 12(4): 382-387.

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