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- Title
Study of the Electroreactivity of Amoxicillin on Carbon Nanotube‐Supported Metal Electrodes.
- Authors
Ferreira, Marta; Kuzniarska‐Biernacka, Iwona; Fonseca, António M.; Neves, Isabel C.; Parpot, Pier; Soares, Olívia S. G. P.; Pereira, Manuel F. R.; Figueiredo, José L.
- Abstract
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. CNT‐supported catalysts: The electroreactivity of amoxicillin (AMX) was studied on catalysts based on Pt, Pd and Ru supported on carbon nanotubes (Pt/CNT, Pd/CNT, Ru/CNT) in aqueous media. The primary degradation products of AMX determined by HPLC‐MS gave some insight about the reaction pathways.
- Subjects
AMOXICILLIN; REACTIVITY (Chemistry); ELECTROCATALYSTS; CARBON nanotubes; CYCLIC voltammetry; PLATINUM catalysts
- Publication
ChemCatChem, 2018, Vol 10, Issue 21, p4914
- ISSN
1867-3880
- Publication type
Article
- DOI
10.1002/cctc.201801193