POLY-0-AMINOPHENOL OBTAINED AT HIGH POTENTIALS BY CYCLIC VOLTAMMETRY ON SN0(2): F ELECTRODES: APPLICATION IN QUANTITATIVE DETERMINATION OF ASCORBIC ACID

Armijo, Francisco; CANALES, LUIS I; del Rio, Rodrigo; DEL VALLE, Mª ANGÉLICA

Abstract

In the present work the obtention of poly-o-aminophenol (POAP) at high potentials on conducting glass (Sn0(2): F) is reported. The synthesis was carried out by continuous potential cycling in a 1 x 10-3M o-aminophenol (OAP), 0.1 M hydrochloric acid, and 0.1 M potassium chloride solution between-0.2 and 1.5 V at 0.05 V-s-1 vs Ag AgC1. The polymer growth was followed by cyclic voltammetry, UV-vis spectra, and AFM characterization. The SnO2: F modified electrode (SnO2: F/POAP) was tested in the electro-oxidation of ascorbic acid (AA) in phosphate buffer solution. This coating showed an important electrocatalytic effect because a negative anodic shift of 0.4 V with respect to abare SnO2: F glass electrode was observed.

Más información

Título según SCOPUS: Poly-o-aminophenol obtained at high potentials by cyclic voltammetry on SnO2: F electrodes. application in quantitative determination of ascorbic acid
Título según SCIELO: POLY-0-AMINOPHENOL OBTAINED AT HIGH POTENTIALS BY CYCLIC VOLTAMMETRY ON SN0(2): F ELECTRODES: APPLICATION IN QUANTITATIVE DETERMINATION OF ASCORBIC ACID
Título de la Revista: Journal of the Chilean Chemical Society
Volumen: 54
Número: 2
Editorial: SOC CHILENA QUIMICA
Fecha de publicación: 2009
Página de inicio: 158
Página final: 162
Idioma: en
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072009000200014&lng=en&nrm=iso&tlng=en
DOI:

10.4067/S0717-97072009000200014

Notas: SCIELO, SCOPUS