Publication: Highly stable amplified low-potential electrocatalytic detection of NAD<sup>+</sup>at azure-chitosan modified carbon electrodes
dc.contributor.author | Tanin Tangkuaram | en_US |
dc.contributor.author | Joseph Wang | en_US |
dc.contributor.author | Marcela C. Rodríguez | en_US |
dc.contributor.author | Rawiwan Laocharoensuk | en_US |
dc.contributor.author | Waret Veerasai | en_US |
dc.contributor.other | Arizona State University | en_US |
dc.contributor.other | Mahidol University | en_US |
dc.contributor.other | Universidad Nacional de Cordoba | en_US |
dc.date.accessioned | 2018-08-24T01:49:52Z | |
dc.date.available | 2018-08-24T01:49:52Z | |
dc.date.issued | 2007-01-30 | en_US |
dc.description.abstract | The 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.citation | Sensors and Actuators, B: Chemical. Vol.121, No.1 (2007), 277-281 | en_US |
dc.identifier.doi | 10.1016/j.snb.2006.09.033 | en_US |
dc.identifier.issn | 09254005 | en_US |
dc.identifier.other | 2-s2.0-33846289951 | en_US |
dc.identifier.uri | https://repository.li.mahidol.ac.th/handle/123456789/24452 | |
dc.rights | Mahidol University | en_US |
dc.rights.holder | SCOPUS | en_US |
dc.source.uri | https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=33846289951&origin=inward | en_US |
dc.subject | Engineering | en_US |
dc.subject | Materials Science | en_US |
dc.subject | Physics and Astronomy | en_US |
dc.title | Highly stable amplified low-potential electrocatalytic detection of NAD<sup>+</sup>at azure-chitosan modified carbon electrodes | en_US |
dc.type | Article | en_US |
dspace.entity.type | Publication | |
mu.datasource.scopus | https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=33846289951&origin=inward | en_US |