This work studies the production of hydrogen peroxide through the cathodic reduction of oxygen in acidic medium, by comparing the results obtained using a commercial graphite and a gas diffusion electrode. A low pH was required to allow the application of hydrogen peroxide generation to an electro-Fenton process. The influence of applied potential and the gas flow composition were investigated. The gas diffusion electrode demonstrates a higher selectivity for hydrogen peroxide production, without significantly compromising the iron regeneration, thus making its successful application to a cathodic Fenton-like treatment, possible. Unlike the graphite cathode, the gas diffusion cathode also proved to be effective in the air flow.

An experimental comparison of a graphite electrode and a gas diffusion electrode for the cathodic production of hydrogen peroxide / DA POZZO, Anna; DI PALMA, Luca; Merli, Carlo; Petrucci, Elisabetta. - In: JOURNAL OF APPLIED ELECTROCHEMISTRY. - ISSN 0021-891X. - 35:4(2005), pp. 413-419. (Intervento presentato al convegno Conference on Electrochemistry for Environmental Recovery tenutosi a Rome, ITALY nel SEP 29-30, 2003) [10.1007/s10800-005-0800-2].

An experimental comparison of a graphite electrode and a gas diffusion electrode for the cathodic production of hydrogen peroxide

DA POZZO, ANNA;DI PALMA, Luca;MERLI, Carlo;PETRUCCI, Elisabetta
2005

Abstract

This work studies the production of hydrogen peroxide through the cathodic reduction of oxygen in acidic medium, by comparing the results obtained using a commercial graphite and a gas diffusion electrode. A low pH was required to allow the application of hydrogen peroxide generation to an electro-Fenton process. The influence of applied potential and the gas flow composition were investigated. The gas diffusion electrode demonstrates a higher selectivity for hydrogen peroxide production, without significantly compromising the iron regeneration, thus making its successful application to a cathodic Fenton-like treatment, possible. Unlike the graphite cathode, the gas diffusion cathode also proved to be effective in the air flow.
2005
fenton's oxidation; gas diffusion electrode; graphite electrode; hydrogen peroxide; hydroxyl radical
01 Pubblicazione su rivista::01a Articolo in rivista
An experimental comparison of a graphite electrode and a gas diffusion electrode for the cathodic production of hydrogen peroxide / DA POZZO, Anna; DI PALMA, Luca; Merli, Carlo; Petrucci, Elisabetta. - In: JOURNAL OF APPLIED ELECTROCHEMISTRY. - ISSN 0021-891X. - 35:4(2005), pp. 413-419. (Intervento presentato al convegno Conference on Electrochemistry for Environmental Recovery tenutosi a Rome, ITALY nel SEP 29-30, 2003) [10.1007/s10800-005-0800-2].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/411266
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