Highly Sensitive Nonenzymatic Glucose Sensor Based on Reduced Graphene Oxide/Ultrasmall Pt Nanowire Nanocomposites

摘要

An amperometric nonenzymatic biosensor for sensitive and selective detection of glucose has beendeveloped by using reduced graphene oxide/ultrasmall platinum nanowire nanocomposites (rGOPtNW) as electrode material. rGO-PtNW displays good electrocatalytic activity towards the oxidationof glucose in alkaline solution. The fabricated biosensor shows good analytical performance includinglow detection limit (4.6 μmol/L), wide linear range (0.032-1.89 mmol/L), high sensitivity (56.11μA·(mmol/L)-1·cm-2), and good anti-interfering ability towards species (uric acid and ascorbic acid)coexisting with glucose in human blood at the work potential of 0 V. It indicated that rGO-PtNWnanocomposite can serve as a promising candidate material for high-performance glucosenonenzymatic biosensors.