Study of the Electroreactivity of Amoxicillin on Carbon Nanotube-Supported Metal Electrodes
| Autor: | Isabel Correia Neves, Salomé Soares, JOSE NEVES, António Fonseca, Pier Parpot, José Figueiredo, Marta Ferreira, Iwona Kuzniarska-Biernacka, Manuel Fernando Pereira |
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| Přispěvatelé: | Universidade do Minho |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Science & Technology
Organic Chemistry European Regional Development Fund Library science Amoxicillin 02 engineering and technology 010501 environmental sciences 021001 nanoscience & nanotechnology 01 natural sciences 7. Clean energy Catalysis 3. Good health surface vs. reactivity relationships Inorganic Chemistry Political science Metal electrodes electrocatalyst based on carbon nanotubes Physical and Theoretical Chemistry electrochemical oxidation 0210 nano-technology 0105 earth and related environmental sciences |
| Zdroj: | Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP |
| Popis: | 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 18, 15 and 2%, respectively. The primary degradation products of AMX determined by HPLCMS gave some insight about the reaction pathways. The authors thank FCT (Fundação para a Ciência e a Tecnologia) for the PhD grant of Marta Ferreira. This work is also a result of project BioTecNorte (operation NORTE-01-0145-FEDER-000004) and AIProcMat@N2020 (operation NORTE-01-0145-FEDER000006), supported by Norte Portugal Regional Operational Programme (NORTE 2020), under the Portugal 2020 Partnership Agreement through the European Regional Development Fund (ERDF). This work also has been funded by ERDF through COMPETE2020 - Programa Operacional Competitividade e Internacionalização (POCI), POCI-01-0145-FEDER-006984 – Associate Laboratory LSRE-LCM, and by national funds through FCT for PTDC/AAGTEC/5269/2014 and Centre of Chemistry (UID/QUI/ 00686/2013 and UID/QUI/0686/2016). info:eu-repo/semantics/publishedVersion |
| Databáze: | OpenAIRE |
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