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.

[1]  G. Wittstock,et al.  Glucose oxidation at bismuth-modified platinum electrodes , 1998 .

[2]  B. Beden,et al.  Fourier transform infrared reflectance spectroscopic investigation of the electrocatalytic oxidation of d-glucose: Identification of reactive intermediates and reaction products , 1996 .

[3]  G. Rivas,et al.  Glucose Biosensor Prepared by the Deposition of Iridium and Glucose Oxidase on Glassy Carbon Transducer , 1999 .

[4]  E. Kalu,et al.  Amperometric biosensor based on thermally activated polymer-stabilized metal nanoparticles , 2007 .

[5]  Aicheng Chen,et al.  Titanium-supported nanoporous bimetallic Pt–Ir electrocatalysts for formic acid oxidation , 2007 .

[6]  Aicheng Chen,et al.  Nanoporous Pt‐Ru Networks and Their Electrocatalytical Properties , 2007 .

[7]  A. Tseung,et al.  Partial oxidation of glucose by a Pt|WO3 electrode , 1997 .

[8]  Ernest Yeager,et al.  In situ infrared studies of glucose oxidation on platinum in an alkaline medium , 1991 .

[9]  G. Rivas,et al.  Glucose microsensor based on electrochemical deposition of iridium and glucose oxidase onto carbon fiber electrodes , 1997 .

[10]  H. Gasteiger,et al.  Characterization of High‐Surface‐Area Electrocatalysts Using a Rotating Disk Electrode Configuration , 1998 .

[11]  E. Scavetta,et al.  Electrodeposition of a nickel-based hydrotalcite on Pt nanoparticles for ethanol and glucose sensing , 2007 .

[12]  Sejin Park,et al.  Nonenzymatic glucose detection using mesoporous platinum. , 2003, Analytical chemistry.