Corrigendum to "A high-performance glucose biosensor using covalently immobilised glucose oxidase on a poly(2,6-diaminopyridine)/carbon nanotube electrode"

Mohammad Ali Kamyabi; Nasim Hajari; Anthony P F Turner; Ashutosh Tiwari

doi:10.1016/j.talanta.2016.02.028

Corrigendum to "A high-performance glucose biosensor using covalently immobilised glucose oxidase on a poly(2,6-diaminopyridine)/carbon nanotube electrode"

Talanta. 2016 Jun 1:153:414-415. doi: 10.1016/j.talanta.2016.02.028. Epub 2016 Mar 29.

Authors

Mohammad Ali Kamyabi¹, Nasim Hajari², Anthony P F Turner³, Ashutosh Tiwari⁴

Affiliations

¹ Biosensor 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.
² Department of Chemistry, Zanjan University, P.O. Box 45195-313, Zanjan, Islamic Republic of Iran.
³ Biosensor sand Bioelectronics Centre, Department of Physics, Chemistry and Biology, IFM-Linköping University, S-58183 Linköping, Sweden.
⁴ Biosensor sand Bioelectronics Centre, Department of Physics, Chemistry and Biology, IFM-Linköping University, S-58183 Linköping, Sweden. Electronic address: ashutosh.tiwari@liu.se.

PMID: 27130136
DOI: 10.1016/j.talanta.2016.02.028

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.

Keywords: Electron transfer; Glucose biosensor; Glucose oxidase; MWNT/poly-(2,6-diaminopyridine).

Publication types

Published Erratum