Nonenzymatic Glucose Detection Using\nMesoporous Platinum

Abstract

Roughness of nanoscopic dimensions can be used to\nselectively enhance the faradaic current of a sluggish\nreaction. Using this principle, we constructed mesoporous\nstructures on the surfaces of pure platinum electrodes\nresponding even more sensitively to glucose than to\ncommon interfering species, such as l-ascorbic acid and\n4-acetamidophenol. Good sensitivities, as high as 9.6 μA\ncm^-2 mM^-1, were reproducibly observed in the presence\nof high concentration of chloride ion. The selectivities,\nsensitivities, and stabilities determined experimentally\nhave demonstrated the potential of mesoporous platinum\nas a novel candidate for nonenzymatic glucose sensors.