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Development and characterization of a new conducting carbon composite electrode
Barsan, Madalina M.; Pinto, Edilson M.; Florescu, Monica; Brett, Christopher M. A.A new conducting composite flexible material prepared from cellulose acetate (CA) polymer and graphite has been developed and used for the fabrication of electrodes, which were then characterized by cyclic voltammetry and electrochemical impedance spectroscopy. Scanning electron microscopy (SEM) was used to provide information concerning the morphology of the composite electrode surface. The potential window, b...
Electrosynthesis and electrochemical characterisation of phenazine polymers for...
Barsan, Madalina M.; Pinto, Edilson M.; Brett, Christopher M. A.A comparative investigation has been undertaken of the electrosynthesis and electrochemical properties of three different electroactive polymers on carbon film electrode substrates: poly(neutral red) from the phenazine dye neutral red, and poly(methylene green) and poly(methylene blue), from the corresponding phenothiazine dyes. The formation of the radical cation at different potentials and the chemical struct...
Interaction of BSA protein with copper evaluated by electrochemical impedance s...
Pinto, Edilson M.; Soares, David M.; Brett, Christopher M. A.The interaction of bovine serum albumin (BSA) protein with copper in phosphate buffer solution has been studied by a combination of electrochemical impedance spectroscopy (EIS) close to the open circuit potential, with simultaneous monitoring by the electrochemical quartz crystal microbalance (EQCM), in order to throw light on BSA adsorption. Copper films were electroplated onto gold quartz crystals and mounted...
A Graphite-Polyurethane Composite Electrode for the Analysis of Furosemide
Semaan, Felipe S.; Pinto, Edilson M.; Cavalheiro, Éder T. G.; Brett, Christopher M. A.A graphite-polyurethane composite electrode has been used for the determination of furosemide, a antihypertensive drug, in pharmaceutical samples by anodic oxidation. Cyclic voltammetry and electrochemical impedance spectroscopy were used to characterize the electrooxidation process at +1.0 V vs. SCE over a wide pH range, with the result that no adsorption of analyte or products occurs, unlike at other carbon-b...
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