An overview of the different sacrificial oxidants used in literature is reported, paying particular attention to the “sacrificial pair”, a photosystem made of a Ru-dye (Tris(bipyridine)ruthenium(II) dichloride, working as “antenna” for visible light) and a final electron acceptor (i.e. the persulfate ion). Such sacrificial oxidant is one of the most common in the literature and it was used in all the experiments described in Chap. 4. Different configurations of batch reactors can be used in the sacrificial-oxidant-driven water oxidation (WO) reaction, and three of them (i.e. the Clark-electrode Cell, the Stripping Flow Reactor and the Bubbling Reactor) are described in detail. The effects of both mass transfer limitations and side reactions on the determination of the two parameters describing the activity of water oxidation catalysts (i.e. the O2 production rate and the total evolved O2) are discussed, evidencing how such undesired phenomena occur to a different extent with the three reactor configurations.

Sacrificial Oxidants as a Means to Study the Catalytic Activity of Water Oxidation Catalysts / Ottone, C.; Hernandez, S.; Armandi, M.; Bonelli, B. (POLITO SPRINGER SERIES). - In: Testing Novel Water Oxidation Catalysts for Solar Fuels Production[s.l] : Springer, 2019. - ISBN 978-3-030-12711-4. - pp. 29-47 [10.1007/978-3-030-12712-1_3]

Sacrificial Oxidants as a Means to Study the Catalytic Activity of Water Oxidation Catalysts

Hernandez S.;Armandi M.;Bonelli B.
2019

Abstract

An overview of the different sacrificial oxidants used in literature is reported, paying particular attention to the “sacrificial pair”, a photosystem made of a Ru-dye (Tris(bipyridine)ruthenium(II) dichloride, working as “antenna” for visible light) and a final electron acceptor (i.e. the persulfate ion). Such sacrificial oxidant is one of the most common in the literature and it was used in all the experiments described in Chap. 4. Different configurations of batch reactors can be used in the sacrificial-oxidant-driven water oxidation (WO) reaction, and three of them (i.e. the Clark-electrode Cell, the Stripping Flow Reactor and the Bubbling Reactor) are described in detail. The effects of both mass transfer limitations and side reactions on the determination of the two parameters describing the activity of water oxidation catalysts (i.e. the O2 production rate and the total evolved O2) are discussed, evidencing how such undesired phenomena occur to a different extent with the three reactor configurations.
978-3-030-12711-4
978-3-030-12712-1
Testing Novel Water Oxidation Catalysts for Solar Fuels Production
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2827434