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Type: Artigo de periódico
Title: Poly-xanthurenic acid as an efficient mediator for the electrocatalytic oxidation of NADH
Author: Silva, FDD
Lopes, CB
Costa, ED
Lima, PR
Kubota, LT
Goulart, MOF
Abstract: This paper describes, for the first time, the development of a simple and highly sensitive chemical sensor based on a new electroactive material, electrogenerated in situ from xanthurenic acid on an electrode modified with MWCNT. The modified electrode shows efficient electrocatalytic oxidation activity towards NADH at an applied potential of 0.1 V vs. Ag/AgCl. The kinetic constant, k(kin), for the electrocatalytic oxidation of NADH, evaluated by chronoamperometry and voltammetry using RDE, provided values close to 10(5) mol(-1) Ls(-1). (C) 2010 Elsevier B.V. All rights reserved.
Subject: Xanthurenic acid
Chemically modified electrodes
Country: EUA
Editor: Elsevier Science Inc
Citation: Electrochemistry Communications. Elsevier Science Inc, v. 12, n. 3, n. 450, n. 454, 2010.
Rights: fechado
Identifier DOI: 10.1016/j.elecom.2010.01.017
Date Issue: 2010
Appears in Collections:Unicamp - Artigos e Outros Documentos

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