Amperometric glucose sensor based on platinum-iridium nanomaterials

This communication reports on a novel amperometric glucose sensor based on nanoporous Pt-Ir catalysts. Pt-Ir nanostructures with different contents of iridium were directly grown on Ti substrates using a one-step facile hydrothermal method and were characterized using scanning electron microscopy and energy dispersive X-ray spectroscopy. Our electrochemical study has shown that the nanoporous Pt-Ir(38%) electrode exhibits very strong and sensitive amperometric responses to glucose even in the presence of a high concentration of Cl- and other common interfering species such as ascorbic acid, acetamidophenol and uric acid, promising for nonenzymatic glucose detection. (c) 2008 Elsevier B.V. All rights reserved.