Title of article :
Electrochemical coating of [trans-L14CoIIICNFeII(CN)5]Na on ITO/Au electrode and its electrocatalytic properties towards nitrite reduction
Author/Authors :
Cلceres، نويسنده , , César and Martيnez، نويسنده , , Manuel and Rodrيguez، نويسنده , , Carlos and Dreyse، نويسنده , , Paulina and Ortega، نويسنده , , Victoria and Isaacs، نويسنده , , Mauricio، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2014
Pages :
6
From page :
1
To page :
6
Abstract :
The preparation of an ITO (Indium Tin Oxide) modified electrode with a mixed valence CoIII/FeII complex is described. The ITO electrode was initially modified with Au nanoparticles by dip coating in order to obtain and ITO/Au surface over which a film of the [trans-L14CoIIINCFeII(CN)5]Na (L14CoIII–FeII; L14 = 6-methyl-1,4,8,11-tetraazacyclotetradecan-6-amine) complex was deposited electrochemically, thus obtaining an ITO/Au/L14CoIII–FeII modified electrode. The modified electrode has been characterized by cyclic voltammetry, Raman spectroscopy, AFM and SEM, thus confirming the presence of the mixed valence complex as a modifier species. The electrode prepared shows good stability in aqueous solution and its activity as electrocatalyst in the reduction of nitrites has been evaluated. Cyclic voltammetry experiments run in presence of nitrites show a current enhancement on the ITO/Au/L14CoIII–FeII modified electrodes with respect to the ITO/Au initial electrode. After controlled potential electrolysis experiments, analysis of the products indicate the presence of hydroxylamine as the main nitrite reduction species, although small quantities of hydrazine and ammonia where also obtained.
Keywords :
Mixed valence complexes , Electrocatalysis , conducting polymers , nitrite
Journal title :
Journal of Electroanalytical Chemistry
Serial Year :
2014
Journal title :
Journal of Electroanalytical Chemistry
Record number :
1678176
Link To Document :
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