Study of the Electroreactivity of Amoxicillin on Carbon Nanotube-Supported Metal Electrodes

• Tipo: Artigo em Revista Científica Internacional
• Data: 2018

Autores

Marta Ferreira (Autor) Outra; Iwona Kuzniarska-Biernacka (Autor) Outra; António M. Fonseca (Autor) Outra; sabel C. Neves (Autor) Outra; Olívia S. G. P. Soares (Autor) FEUP; Manuel Fernando R. Pereira (Autor) FEUP; José L. Figueiredo (Autor) Outra; Pier Parpot (Autor) Outra

Revista

Título: ChemCatChem

Vol. 10 Nº 21

Páginas: 4914-4923

ISSN: 1867-3880

Editora: Wiley-Blackwell

Indexação

ISI Web of Knowledge - 6 Citações

Scopus - 5 Citações

Outras Informações

ID Authenticus: P-00P-PBN

DOI: 10.1002/cctc.201801193

Abstract (EN): The electroreactivity of amoxicillin (AMX) was studied on catalysts based on platinum, palladium and ruthenium supported on carbon nanotubes (Pt/CNT, Pd/CNT, Ru/CNT) in aqueous media using cyclic voltammetry. Cyclic voltammograms show two oxidation processes, the first one between 0.5 and 1.0 V vs. reference hydrogen electrode (RHE) and the second one between 1.2 and 1.6 V vs. RHE. The effects of electrocatalytic material and supporting electrolyte, on current intensities and oxidation potentials, were determined using experimental design strategy (DOE). Kinetic parameters of the oxidation reactions were calculated from the scan rate study. The constant potential electrolysis of AMX was carried out on Ru/CNT catalyst, in 0.1 M NaOH and AMX conversion reached 45 % after 6 h of electrolysis at 2.5 V vs. RHE. The percentages of CO32-, SO42- and NO3- among oxidation products were 26, 17 and 4 %, respectively. The primary degradation products of AMX determined by HPLC-MS gave some insight about the reaction pathways.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 10