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A carbon paste electrode has been modified with a r ed algal species of Porphyridium cruentum, and the characterization of its electro catalytic activity has been done with cyclic voltammetric studies of the potassium ferric yanide (K3[Fe(CN)6]) system. In order to highlight the electrode’s stable and fast re ponse to the [Fe(CN) 6]/[Fe(CN)6] redox couple, experiments were also conducted with a bare carbon paste electrode. FTIR spectra revealed the functional moieties of th e bare and modified electrodes. The electrochemical surface area and surface coverage c pacity were calculated for both electrodes. The effect of the scan rate helped to e valuate the nature of the electrode process, electron transfer mechanism, and kinetic p arameters (rate constant and charge transfer coefficient).

Electrochemical Evaluation of Biologically Modified Carbon Paste Electrode with Cyclic Voltammetric Technique