Cobalt phosphide nanowires: an efficient electrocatalyst for enzymeless hydrogen peroxide detection

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Abstract
In this letter, we demonstrate for the first time that cobalt phosphide nanowires (CoP NWs) exhibit remarkable catalytic activity toward electrochemical detection of hydrogen peroxide (H 2 O 2 ). As an enzymeless H 2 O 2 sensor, such CoP NWs show a fast amperometric response within 5 s and a low detection limit of 0.48 μ M. In addition, this nonenzymatic sensor displays good selectivity, long-term stability and excellent reproducibility.

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