Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/169162
Title: Electrosynthesis of hydrogen peroxide sustained by anodic oxygen evolution in a flow-through reactor
Author: Cornejo, Oscar M.
Sirés Sadornil, Ignacio
Nava, José L.
Keywords: Depuració de l'aigua
Oxidació electroquímica
Water purification
Electrolytic oxidation
Issue Date: 4-Jul-2020
Publisher: Elsevier B.V.
Abstract: This study reports the performance of a flow-through reactor to promote the sustainable production of H2O2 upon cathodic reduction of anodically generated O2. A smart configuration that alternated Ti|IrO2-Ta2O5 anode meshes, as a source of O2 subsequently reduced to H2O2 at adjacent porous reticulated vitreous carbon cathodes, was successfully tested employing a 0.050 M Na2SO4 solution at pH 3.0. With this reactor, the need of an external source of pure O2 or air typically employed during the electrosynthesis of this high value commodity was avoided. Bulk electrolyses in recirculation operation mode were carried out to evaluate the influence of the volumetric flow rate (0.4-1.0 L min-1) and applied current (59.5-178.5 mA) on the H2O2 accumulation profiles. The best performance of the reactor was achieved at 0.8 L min-1 and 59.5 mA, reaching 14.3 mg L-1 H2O2 after 3 h, with maximum current efficiency and electrolytic energy consumption of 100% and 0.021 kWh (g H2O2)-1, respectively. This is a first approach to produce greener H2O2, envisaging its future application to water treatment by electrochemical advanced oxidation processes.
Note: Versió postprint del document publicat a: https://doi.org/10.1016/j.jelechem.2020.114419
It is part of: Journal of Electroanalytical Chemistry, 2020, vol. 873, num. 114419
URI: http://hdl.handle.net/2445/169162
Related resource: https://doi.org/10.1016/j.jelechem.2020.114419
ISSN: 1572-6657
Appears in Collections:Articles publicats en revistes (Ciència dels Materials i Química Física)

Files in This Item:
File Description SizeFormat 
702756.pdf458.53 kBAdobe PDFView/Open    Request a copy


Embargat   Document embargat fins el 4-7-2022


This item is licensed under a Creative Commons License Creative Commons