Copper ferrite synthesis from spent Li-ion batteries for multifunctional application as catalyst in photo Fenton process and as electrochemical pseudocapacitor
| Autor: | M.F.F. Lelis, V.C.B. Pegoretti, V.M. Leal, L. B. Magnago, A.K.S. Rocha, A.A.L. Marins, S.A.D. Ferreira, M.B.J.G. Freitas, J.J. Santos |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Scanning electron microscope Mechanical Engineering chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Electrochemistry 01 natural sciences Copper 0104 chemical sciences chemistry Mechanics of Materials Transmission electron microscopy Inductively coupled plasma atomic emission spectroscopy Pseudocapacitor Photocatalysis General Materials Science Inductively coupled plasma 0210 nano-technology Nuclear chemistry |
| Zdroj: | Materials Research Bulletin. 113:231-240 |
| ISSN: | 0025-5408 |
| DOI: | 10.1016/j.materresbull.2019.02.007 |
| Popis: | In this study, from copper recycled from spent lithium-ion batteries (LiBs) is made the synthesis of cupper ferrite (CuFe2O4-LiB). X-ray diffraction, energy dispersive X-ray spectroscopy and inductively coupled plasma optical emission spectrometry (ICP OES) identified the structure and composition of CuFe2O4-LiB. Scanning electron microscopy and transmission electron microscopy showed agglomerates of nanometric spherical particles. This study investigated the multifunctionality of CuFe2O4-LiB. Photocatalytic properties were analyzed by monitoring the decolorization of methylene blue (MB) in a heterogeneous photo-Fenton process in the presence of solar radiation. Decolorization efficiency was 96.1% in 45 min of reaction. Ion chromatography detected formic and acetic acids as products of MB degradation, and by ICP OES measured lower concentrations of 0.09 mgL−1 and 0.37 mgL−1, respectively for iron and copper ions in the treated solution. CuFe2O4-LiB electrodes showed great reversibility, charge efficiency, and a specific capacitance of 2.4 Fg−1 (10.0 mVs−1), which are favorable characteristics for pseudocapacitors. |
| Databáze: | OpenAIRE |
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