Abstract
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).
Original language | English |
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Pages (from-to) | 1542-1548 |
Number of pages | 7 |
Journal | Electroanalysis |
Volume | 20 |
Issue number | 14 |
DOIs | |
Publication status | Published - Jul 2008 |
Scopus Subject Areas
- Analytical Chemistry
- Electrochemistry
User-Defined Keywords
- Carbon nanotubes
- Direct electrochemistry
- Glucose biosensor
- Gold nanoparticles
- Poly(diallyldimethylammonium chloride)