Voltammetric Biosensor Based on Silver Nanowires and Tyrosinase for the Electrochemical Detection of Catechol

摘要

An enzymatic electrochemical biosensor for catechol detection based on silver nanowires (AgNWs), has been developed. The employment of AgNWs was essential to improve the electron transfer in comparison with that offered by an ITO substrate. AgNWs' electrocatalytic properties and high affinity with biomolecules make them desirable for constructing biosensors. Combining nanomaterials with enzymes reduces insulating effects, due to the high-efficient electrical activity from the active site of the enzyme to the electrode. Moreover, the employment of these proteins increases the specificity of the sensor.