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

CARMINNA SOPHIA OTTONE MELIS, Simelys Hernández, Marco Armandi, Barbara Bonelli

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

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.

Original languageEnglish
Title of host publicationPoliTO Springer Series
PublisherSpringer
Pages29-47
Number of pages19
DOIs
StatePublished - 2019
Externally publishedYes

Publication series

NamePoliTO Springer Series
ISSN (Print)2509-6796
ISSN (Electronic)2509-7024

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