Direct Electrochemistry of Glucose Oxidase at Carbon Nanotube‐gold Colloid Modified Electrode with Poly(diallyldimethylammonium chloride) Coating | Zendy

Yao YanLi | Zendy; Shiu KwokKeung | Zendy

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Direct Electrochemistry of Glucose Oxidase at Carbon Nanotube‐gold Colloid Modified Electrode with Poly(diallyldimethylammonium chloride) Coating

Author(s) -

Yao YanLi,

Shiu KwokKeung

Publication year - 2008

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.200804209

Subject(s) - glucose oxidase , amperometry , carbon nanotube , electrochemistry , electrode , biosensor , glassy carbon , colloid , materials science , colloidal gold , coating , chemical engineering , chloride , gold colloid , inorganic chemistry , nuclear chemistry , chemistry , nanotechnology , cyclic voltammetry , organic chemistry , nanoparticle , metallurgy , engineering

Glucose oxidase showed direct electrochemical transfer at glassy carbon electrodes immobilized with carbon nanotube‐gold colloid (CNT‐Au) composites with poly(diallydimethylammonium chloride) (PDDA) coatings. The modified electrode (GC/CNT/Au/PDDA‐GOD) was employed for the amperometric determination of glucose. Under optimal conditions, the biosensor displayed linear response to glucose from 0.5 to 5 mM with a sensitivity of 2.50 mA M −1 at an applied potential of −0.3 V (vs. Ag|AgCl reference).

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