Highly efficient nanostructured CoFe 2 O 4 thin film electrodes for electrochemical degradation of rhodamine B.

Autor: Labchir N; UJM-Saint-Etienne, CNRS, LabHC UMR 5516, Univ Lyon, Saint-Etienne, France.; Faculty of Sciences, Materials and Renewable Energies Laboratory, Agadir, Morocco., Amaterz E; Materials and Environment (LME) Laboratory, Faculty of Sciences, University Ibn Zohr, Agadir, Morocco., Hannour A; Faculty of Sciences, Materials and Renewable Energies Laboratory, Agadir, Morocco., Ait Hssi A; Faculty of Sciences, Materials and Renewable Energies Laboratory, Agadir, Morocco., Vincent D; UJM-Saint-Etienne, CNRS, LabHC UMR 5516, Univ Lyon, Saint-Etienne, France., Ihlal A; Faculty of Sciences, Materials and Renewable Energies Laboratory, Agadir, Morocco., Sajieddine M; Materials Physics Laboratory, FST, University of Sultan Moulay Slimane, Béni Mellal, Morocco.
Jazyk: angličtina
Zdroj: Water environment research : a research publication of the Water Environment Federation [Water Environ Res] 2020 May; Vol. 92 (5), pp. 759-765. Date of Electronic Publication: 2019 Dec 01.
DOI: 10.1002/wer.1272
Abstrakt: In this work, we report the application of highly efficient electrodeposited cobalt ferrite (CoFe 2 O 4 ) thin films in electrochemical degradation of rhodamine B. XRD, FTIR and Raman spectroscopic studies confirmed the formation of single phase CoFe 2 O 4 . SEM analysis revealed a very fine nanorods dispersed uniformly with average size around 30 nm. UV-Vis spectrophotometry emphasized that the optical band gap value is 1.6 eV. Moreover, the elaborated CoFe 2 O 4 thin films showed a good efficiency for the electrochemical degradation of an aqueous solution of rhodamine B (RhB) attaining 99% during the first 3 min of reaction time. The trapping experiments revealed that the hydroxyl radicals were the main active species leading to the removal of RhB initial concentration of 10 mg/L in a very short time. PRACTITIONER POINTS: A simple electrodeposition technique was used to fabricate CoFe 2 O 4 thin. XRD and FTIR studies revealed the formation of pure cubic spinel phase. Nano-rod like morphology has been successfully synthesized. The rhodamine B aqueous solution has been completely decolorized using the obtained CoFe 2 O 4 thin films.
(© 2019 Water Environment Federation.)
Databáze: MEDLINE
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