Premium
Oxidation of Nitric Oxide at a Porphyrinic‐Based SensorNew Results from Rotating Disk Experiments
Author(s) -
Ciszewski Aleksander,
Milczarek Grzegorz,
Kubaszewski Eugeniusz,
Ľożyński Marek
Publication year - 1998
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/(sici)1521-4109(199807)10:9<628::aid-elan628>3.0.co;2-v
Subject(s) - nafion , porphyrin , electrode , amperometry , glassy carbon , vanillin , nitric oxide , catalysis , materials science , inorganic chemistry , oxide , nitric acid , chemistry , electrochemistry , photochemistry , organic chemistry , cyclic voltammetry
An amperometric sensor for the determination of nitric oxide based on its oxidation on a glassy carbon electrode modified with electropolymerized vanillin porphyrin [tetrakis(3‐methoxy‐4‐hydroxyphenyl)porphyrin] film and Nafion is described. Our results show that the anodic oxidation of NO at the modified electrode is the result of a catalytic effect induced by the porphyrinic modifier, that acts as a 3D system. The effect of film thickness of both porphyrinic modifier and Nafion on the NO response is tested. The results of rotating disk electrode experiments are presented and a general mathematical model of the working sensor is also given.