Abstract
The electrochemical reduction and oxidation of hemoglobin at a bare platinum electrode and at an electrode modified with methylene blue adsorbed from solution, as well as at the platinum electrode in a solution containing methylene blue, have been investigated by using UV—visible spectroelectrochemistry. The methylene blue adsorbed modified electrode exhibits the ability to catalyze the direct electrode reduction of hemoglobin. The semiconductive surface formed during the electrode process of methylene blue and its promotion of the heterogeneous reduction and oxidation of hemoglobin are discussed.
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