Development of a new cathode for the electro-Fenton process combining carbon felt and iron-containing organic–inorganic hybrids [Élaboration d'une nouvelle cathode pour le procédé électro-Fenton à base de composites feutre de carbone et d'hybrides organiques–inorganiques de structure de type talc contenant du fer]

Abstract : New kinds of electrodes were prepared for implementation in the electro-Fenton process. Based on carbon felt/organic–inorganic talc like hybrid (TLH), the electrodes were successfully prepared by a simple one-step sol–gel procedure at room temperature, from aminopropyltrimethoxysilane, magnesium and iron(III) hexahydrated chlorides, carbon felt, and ethanol. They were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, X-ray fluorescence, thermal analysis, scanning electron microscopy, and solid-state nuclear magnetic resonance. It was shown that the order of carbon felt addition to the prepared solution is a key point to form a thin and homogeneous TLH layer at the surface of the carbon fibers. Also, composites having different Fe/Mg molar ratios can be obtained. The composite containing 100 wt % Fe was successfully tested as an electrode for the electro-Fenton process, because 98% degradation yield was obtained after 4 h of electrolysis. These results show that Fenton's reaction can be achieved with immobilized iron and H 2 O 2 produced at the cathode, which can account for the better degradation yield as compared with 70.5% obtained during electrolysis with a nonmodified cathode under the same operating conditions. Consequently, the use of such a material as an electrode for the electro-Fenton process was proven to merit further studies and, notably, to be used for the processing of industrial pharmaceutical effluents. © 2019 Académie des sciences
Document type :
Journal articles
Complete list of metadatas

https://hal-univ-rennes1.archives-ouvertes.fr/hal-02090013
Contributor : Laurent Jonchère <>
Submitted on : Thursday, April 4, 2019 - 1:14:21 PM
Last modification on : Friday, June 14, 2019 - 1:04:46 PM

Links full text

Identifiers

Citation

S.M. Miron, J. Brendlé, L. Josien, F. Fourcade, F. Rojas, et al.. Development of a new cathode for the electro-Fenton process combining carbon felt and iron-containing organic–inorganic hybrids [Élaboration d'une nouvelle cathode pour le procédé électro-Fenton à base de composites feutre de carbone et d'hybrides organiques–inorganiques de structure de type talc contenant du fer]. Comptes Rendus Chimie, Elsevier Masson, 2019, 22 (2-3), pp.238-249. ⟨10.1016/j.crci.2018.11.012⟩. ⟨hal-02090013⟩

Share

Metrics

Record views

13