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Updated: Mar 22, 2026
Fabrication of Carbon Nanotube High-Frequency Nanoelectronic Biosensor for Sensing in High Ionic Strength Solutions
Published on: July 22, 2013
Corrigendum to "A high-performance glucose biosensor using covalently immobilised glucose oxidase on a
Mohammad Ali Kamyabi1, Nasim Hajari2, Anthony P F Turner3
1Biosensor sand Bioelectronics Centre, Department of Physics, Chemistry and Biology, IFM-Linköping University, S-58183 Linköping, Sweden; Department of Chemistry, Zanjan University, P.O. Box 45195-313, Zanjan, Islamic Republic of Iran.
Abstract:
A highly-sensitive glucose biosensor amenable to ultraminiaturisation was fabricated by immobilization of glucose oxidase (GOX), onto a poly(2,6-diaminopyridine)/multi-walled carbon nanotube/glassy carbon electrode (poly(2,6-DP)/MWCNT/GCE). Cyclic voltammetry was used for both the electrochemical synthesis of poly-(2,6-DP) on the surface of a MWCNT-modified GC electrode, and characterization of the polymers deposited on the GC electrode. The synergistic effect of the high active surface area of both the conducting polymer, i.e., poly-(2,6-DP) and MWCNT gave rise to a remarkable improvement in the electrocatalytic properties of the biosensor. The transfer coefficient (α), heterogeneous electron transfer rate constant and Michaelis-Menten constant were calculated to be 0.6, 4s-1 and 0.22mM at pH 7.4, respectively. The GOx/poly(2,6-DP)/MWCNT/GC bioelectrode exhibited two linear responses to glucose in the concentration ranging from 0.42μM to 8.0 mM with a correlation coefficient of 0.95, sensitivity of 52.0μAmM-1cm-2, repeatability of 1.6% and long-term stability, which could make it a promising bioelectrode for precise detection of glucose in the biological samples.
