Publication:
Highly stable amplified low-potential electrocatalytic detection of NAD<sup>+</sup>at azure-chitosan modified carbon electrodes

dc.contributor.authorTanin Tangkuaramen_US
dc.contributor.authorJoseph Wangen_US
dc.contributor.authorMarcela C. Rodríguezen_US
dc.contributor.authorRawiwan Laocharoensuken_US
dc.contributor.authorWaret Veerasaien_US
dc.contributor.otherArizona State Universityen_US
dc.contributor.otherMahidol Universityen_US
dc.contributor.otherUniversidad Nacional de Cordobaen_US
dc.date.accessioned2018-08-24T01:49:52Z
dc.date.available2018-08-24T01:49:52Z
dc.date.issued2007-01-30en_US
dc.description.abstractThe incorporation of chitosan (CHIT) into an Azure-C (AZU) film, covering a glassy carbon electrode, greatly facilitates the electroreduction of NAD+to allow a highly stable low-potential amplified cathodic detection of this enzymatic cofactor. Higher and sharper NAD+reduction peaks are thus observed at lower potentials at the AZU/CHIT coated electrode, compared to those observed at the AZU-modified electrode. Such formation of an AZU/CHIT surface layer leads also to a highly stable NAD+response. For example, 98% of the initial amperometric response of NAD+at the AZU/CHIT coated electrode is retained after 20 min stirring 6 × 10-3M NAD+solution (compared to 69% at the AZU-modified electrode). Factors affecting the enhanced electrocatalytic response, including the composition of the AZU/CHIT layer or pH, are examined. Electrochemical parameters for the NAD+reduction, including the α, k or E0′, are estimated by cyclic voltammetry. The improved NAD+detection of NAD+reflects the improved film formation imparted by the CHIT component. The new modified electrode could find a wide range of biotechnological applications, including biosensors, bioreactors and biofuel cells. © 2006 Elsevier B.V. All rights reserved.en_US
dc.identifier.citationSensors and Actuators, B: Chemical. Vol.121, No.1 (2007), 277-281en_US
dc.identifier.doi10.1016/j.snb.2006.09.033en_US
dc.identifier.issn09254005en_US
dc.identifier.other2-s2.0-33846289951en_US
dc.identifier.urihttps://repository.li.mahidol.ac.th/handle/123456789/24452
dc.rightsMahidol Universityen_US
dc.rights.holderSCOPUSen_US
dc.source.urihttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=33846289951&origin=inwarden_US
dc.subjectEngineeringen_US
dc.subjectMaterials Scienceen_US
dc.subjectPhysics and Astronomyen_US
dc.titleHighly stable amplified low-potential electrocatalytic detection of NAD<sup>+</sup>at azure-chitosan modified carbon electrodesen_US
dc.typeArticleen_US
dspace.entity.typePublication
mu.datasource.scopushttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=33846289951&origin=inwarden_US

Files

Collections