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Iridium‐dispersed carbon paste enzyme electrodes
Author(s) -
Wang Joseph,
Rivas Gustavo,
Chicharro Manuel
Publication year - 1996
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.1140080506
Subject(s) - glucose oxidase , electrocatalyst , biosensor , iridium , amperometry , hydrogen peroxide , carbon fibers , electrode , carbon paste electrode , catalysis , chemistry , electrochemistry , inorganic chemistry , chemical engineering , materials science , nanotechnology , organic chemistry , cyclic voltammetry , composite number , composite material , engineering
An highly selective first‐generation glucose biosensor, based on an iridium‐dispersed carbon‐paste transducer, is described. The iridium‐on‐carbon particles provide excellent electrocatalysis for both the reduction and oxidation of hydrogen peroxide. Such unique catalytic action offers convenient biosensing of glucose at very low operating potentials, where interfering reactions are negligible. Factors influencing the electrocatalytic and biocatalytic actions are elucidated, along with the analytical performance. Implications to other oxidase‐based amperometric electrodes are discussed.