Electrochemical and spectroscopic study of vanadyl acetylacetonate–ionic liquids interactions
| Autor: | Mo. Meskinfam Langroudi, Christian Silvio Pomelli, Andrea Mezzetta, Cinzia Chiappe, M. Al Khatib, Luca Guglielmero, M. De Leo, Barbara Mecheri, Rebecca Pogni, Romano Giglioli, M. Aysla Costa de Oliveira, Lorenzo Guazzelli, A. D' Epifanio |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Cyclic voltammetry Spectroscopic studies General Chemical Engineering Vanadium chemistry.chemical_element Vanadium complexes Settore CHIM/07 02 engineering and technology Linear sweep voltammetry 010402 general chemistry Spectroscopic analysis 01 natural sciences chemistry.chemical_compound Electron spin resonance spectroscopy Electrochemistry Vanadyl acetylacetonate Solubility Rotating disk electrode Acetonitrile Rotating disk electrodes Ionic liquids Non-aqueous electrolytes Redox flow battery Ionic liquids Vanadium Redox flow battery Non-aqueous electrolytes Electrochemical effects 021001 nanoscience & nanotechnology 0104 chemical sciences Vanadium compounds Kinetic currents chemistry Spectroscopic analysis Electrochemical effects EPR spectroscopy Vanadyl acetylacetonate Vanadium compounds Ionic liquid Physical chemistry 0210 nano-technology |
| Popis: | A panel of ionic liquids has been synthesized and their effect on the vanadyl acetylacetonate solubility in acetonitrile has been firstly assessed. 1-Butyl-3-methylimidazolium acetate showed an unprecedented result, increasing the VO(acac)(2) solubility in acetonitrile of more than one magnitude order (from 0.06 M to 1.1 M) opening new interesting horizons for the possible applications of this vanadium complex. The electrochemical effect of the considered ionic liquids has been subsequently investigated through cyclic voltammetry and linear sweep voltammetry with rotating disk electrode, determining diffusion coefficient and kinetic current of VO(acac)(2) in the considered media. In order to achieve a deeper understanding on the examined systems, VO(acac)(2) solutions in acetonitrile ILs were eventually studied through IR, UV-vis, and EPR spectroscopies, finding evidences, corroborated by DFT studies, of the formation of strong adducts between VO(acac)(2) and ILs. (C) 2021 Elsevier Ltd. All rights reserved. |
| Databáze: | OpenAIRE |
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