Influence of the Solvent on the “Casting” Methodology for MWCNT‐Modified Glassy Carbon and Platinum Electrodes |
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Authors: | Ana Carolina Ângelo Dorim Herbert Aleixo Edilton de?Souza?Barcellos Leonardo Luiz Okumura |
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Institution: | 1. Department of Chemistry, Federal University of Vi?osa, 36570‐000, Brazil phone: +55 (31) 3899‐3141;2. fax: +55 (31) 3899‐3065 |
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Abstract: | The choice of electrode material and surface preparation method are usually dictated by the suitability of the electrode to observe an electrochemical parameter, such as heterogeneous electron transfer rate, surface coverage, or redox potential. Thus, the glassy carbon (GC) and platinum (Pt) electrodes were modified with multiwalled carbon nanotubes (MWCNT) by direct “casting” modification using nine different aliquots of solvents. After drying at room temperature, the modified electrode showed distinct redox peaks corresponding to ferrocyanide oxidation/reduction. Using chemometrics, the cyclic voltammograms with higher current intensity were obtained for those in which ethanol, water and acetone as dispersing agents were used for GCE and dimethylformamide, water and acetone for Pt electrode modification. |
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Keywords: | Glassy carbon electrode Platinum electrode “ Casting” modification Ferrocyanide |
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