The development of efficient, sustainable, cheap and safe methods for the synthesis of hydrogen peroxide is a very important challenge from the environmental viewpoint, since H2O2 can be used as a solar fuel or for degradation of organic, inorganic and biologic pollutants from wastewater. Efficient photocatalytic or photoelectrochemical formation of hydrogen peroxide from water and/or oxygen in an acidic medium has been obtained using nickel or cobalt titanates under visible light illumination. The concentration of H2O2 achieved in the photoreaction reached 2.5 mM when nickel titanate was irradiated for 1 h in oxygen saturated suspension. In such conditions, NiTiO3 provide active sides for both, oxygen reduction and water oxidation leading to H2O2 formation.

Photoelectrochemical and photocatalytic systems based on titanates for hydrogen peroxide formation / T. Baran, S. Wojtyła, A. Vertova, A. Minguzzi, S. Rondinini. - In: JOURNAL OF ELECTROANALYTICAL CHEMISTRY. - ISSN 1572-6657. - 808(2018 Jan 01), pp. 395-404. ((Intervento presentato al 2. convegno Mediterranean Symposium - Electrochemistry for Environment and Energy tenutosi a Gargano nel 2016.

Photoelectrochemical and photocatalytic systems based on titanates for hydrogen peroxide formation

T. Baran;A. Vertova;A. Minguzzi;S. Rondinini
2018-01-01

Abstract

The development of efficient, sustainable, cheap and safe methods for the synthesis of hydrogen peroxide is a very important challenge from the environmental viewpoint, since H2O2 can be used as a solar fuel or for degradation of organic, inorganic and biologic pollutants from wastewater. Efficient photocatalytic or photoelectrochemical formation of hydrogen peroxide from water and/or oxygen in an acidic medium has been obtained using nickel or cobalt titanates under visible light illumination. The concentration of H2O2 achieved in the photoreaction reached 2.5 mM when nickel titanate was irradiated for 1 h in oxygen saturated suspension. In such conditions, NiTiO3 provide active sides for both, oxygen reduction and water oxidation leading to H2O2 formation.
Cobalt titanate; Nickel titanate; H2O2 detection; Oxygen reduction reaction; OH radical; Water oxidation
Settore CHIM/02 - Chimica Fisica
Settore CHIM/01 - Chimica Analitica
22-giu-2017
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/511748
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