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Influence of the Solvent on the “Casting” Methodology for MWCNT‐Modified Glassy Carbon and Platinum Electrodes
Author(s) -
Dorim Ana Carolina Ângelo,
Aleixo Herbert,
de Souza Barcellos Edilton,
Okumura Leonardo Luiz
Publication year - 2015
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201500265
Subject(s) - platinum , glassy carbon , electrode , materials science , electrochemistry , redox , inorganic chemistry , ferrocyanide , solvent , acetone , supporting electrolyte , polyacrylonitrile , dimethylformamide , cyclic voltammetry , carbon nanotube , carbon fibers , chemical engineering , chemistry , nanotechnology , organic chemistry , polymer , composite material , catalysis , composite number , engineering
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.