Abstract
An electrochemical method has been employed in this work to deposit copper and silver nanoparticles onto chemical-vapor-deposited nitrogen doped hydrogen amorphous diamond-like carbon (N-DLC) film electrodes. The electrochemical behaviors of the metal-nanoparticle-modified N-DLC electrodes have been characterized in the presence of glucose and hydrogen peroxide in the electrolyte. The copper and the silver nanoparticles possess high catalytic function for the oxidation of glucose and the reduction of hydro peroxide, respectively. The well-defined reduction responses of the reduction or hydrogen peroxide give the silver-nanoparticle-modified N-DLC electrodes high potential for application in hydrogen-peroxide sensing without a label.
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