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NADH Electrocatalytic Oxidation on Gold Nanoparticle‐Modified PVC/TTF‐TCNQ Composite Electrode. Application as Amperometric Sensor |
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| Authors: | Inmaculada García‐Pineda Manuel Mayén José Miguel Rodríguez‐Mellado Rafael Rodríguez‐Amaro |
| Institution: | 1. Departamento de Química Física y Termodinámica Aplicada, Universidad de Córdoba, Campus de Rabanales, Edificio C‐3, CeiA3, IUIQFN, 14014 Córdoba, Spain tel: +34957218617 fax: +34957218618;2. Departamento de Química Agrícola y Edafología, Universidad de Córdoba, Campus de Rabanales, Edificio C‐3, CeiA3, 14014 Córdoba, Spain |
| Abstract: | We herein report on the electrocatalytic activity towards the oxidation of NADH of a PVC/TTF‐TCNQ composite electrode modified with gold nanoparticles. This electrocatalytic property allows proposing this system as a new alternative for amperometric determination of NADH, without need to add another mediator. The sensor shows a linear response to NADH over a concentration range from 5.0×10?6 M up to 5.0×10?4 M, with a sensitivity of 11.22±0.5 mA M?1 and a detection limit (S/N=3) of 4.0×10?6 M for measurements in batch and similar data in FIA. |
| Keywords: | NADH TTF‐TCNQ Sensors Gold nanoparticles FIA |