Electrochemical oxidation of amoxicillin on carbon nanotubes and carbon nanotube supported metal modified electrodes
| Autor: | Marta Susana Ferreira, Pier Parpot, Iwona Kuzniarska-Biernacka, José L. Figueiredo, Olívia S. G. P. Soares, António M. Fonseca, Isabel C. Neves, Manuel Fernando R. Pereira |
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| Přispěvatelé: | Universidade do Minho |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Ciências Químicas [Ciências Naturais]
CNT and M/CNT modified electrodes chemistry.chemical_element 02 engineering and technology Carbon nanotube 010402 general chemistry Electrochemistry 01 natural sciences Catalysis law.invention Metal law Surface properties Electro-oxidation Principal Component Analysis (PCA) Electrolysis Science & Technology Chemistry Reaction pathways Amoxicillin General Chemistry Mineralization (soil science) 021001 nanoscience & nanotechnology Ciências Naturais::Ciências Químicas 0104 chemical sciences 3. Good health Chemical engineering 13. Climate action visual_art Electrode visual_art.visual_art_medium 0210 nano-technology Carbon |
| Zdroj: | Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP |
| Popis: | Supplementary material related to this article can be found, in the online version, at doi:https://doi.org/10.1016/j.cattod.2019.06.039. The electrolysis of amoxicillin (AMX) was carried out on CNT, Pt/CNT and Ru/CNT modified electrodes based on Carbon Toray in 0.1 M NaOH, 0.1 M NaCl and 0.1 M Na2CO3/NaHCO3 buffer (pH 10) media with the aim of studying the significance of two factors, electrode material and pH, on the oxidative degradation and mineralization of AMX. For this purpose, the electrolysis products were identified by HPLC-MS and GC-MS, and quantified by HPLC-UV-RID and IC. The highest carbon mineralization efficiency, corresponding to 30 % of the oxidized AMX, was found for Pt/CNT modified electrode in carbonate buffer medium. Regarding to the AMX conversion, the results show that the effect of pH is higher than that of the electrode material. Principal component analysis allowed to determine the experimental parameters vs. product distribution relationship and to elucidate the oxidation pathways for the studied electrodes. The results show that the hydroxylation of the aromatic ring and the nitrogen atom play an important role on the efficient degradation of AMX. The authors thank FCT (Fundação para a Ciência e a Tecnologia) for the PhD grant of Marta Ferreira. This work has been developed under the scope of the projects: BioTecNorte (operation NORTE-01-0145- FEDER-000004) and “AIProcMat@N2020-Advanced Industrial Processes and Materials for a Sustainable Northern Region of Portugal 2020″, NORTE-01-0145-FEDER-000006, supported by the Northern 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 national funds (FCT/MCTES (PIDDAC)) through the projects: PTDC/AAGTEC/5269/2014, Centre of Chemistry (UID/QUI/00686/2013 and UID/QUI/0686/2016) and Associate Laboratory LSRE-LCM - UID/EQU/50020/2019. info:eu-repo/semantics/publishedVersion |
| Databáze: | OpenAIRE |
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