Demystifying the Role of Covalently Attached Electron-Proton Transfer Mediator in Oxygen Reduction Reaction Catalyst

Soumitra Dinda; Anjila I. Siddiqui; Snehanjali Behera; Biswajit Mondal

doi:10.1021/acscatal.3c03817

Demystifying the Role of Covalently Attached Electron-Proton Transfer Mediator in Oxygen Reduction Reaction Catalyst

Soumitra Dinda, Anjila I. Siddiqui, Snehanjali Behera, Biswajit Mondal

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

The role of covalent attachment of benzoquinone/hydroquinone as electron-proton transfer mediators in ORR is investigated, and it is found that the catalysis is much more efficient as compared to Co(Sal) (Sal = salophen) alone or Co(Sal) and quinone used separately in terms of selectivity toward H₂O formation. While Co(Sal) has only a 3% Faradaic yield for H₂O formation, under the same conditions, the Faradaic yield for H₂O formation is 80% with Co(Sal-H₂Q).

Original language	English
Pages (from-to)	12643-12647
Number of pages	5
Journal	ACS Catalysis
Volume	13
Issue number	19
DOIs	https://doi.org/10.1021/acscatal.3c03817
State	Published - 6 Oct 2023
Externally published	Yes

Keywords

aerobic oxidation
cobalt
electrocatalysis
electron−proton transfer mediator
oxygen reduction reaction

ASJC Scopus subject areas

Catalysis
General Chemistry

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10.1021/acscatal.3c03817

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title = "Demystifying the Role of Covalently Attached Electron-Proton Transfer Mediator in Oxygen Reduction Reaction Catalyst",

abstract = "The role of covalent attachment of benzoquinone/hydroquinone as electron-proton transfer mediators in ORR is investigated, and it is found that the catalysis is much more efficient as compared to Co(Sal) (Sal = salophen) alone or Co(Sal) and quinone used separately in terms of selectivity toward H2O formation. While Co(Sal) has only a 3% Faradaic yield for H2O formation, under the same conditions, the Faradaic yield for H2O formation is 80% with Co(Sal-H2Q).",

keywords = "aerobic oxidation, cobalt, electrocatalysis, electron−proton transfer mediator, oxygen reduction reaction",

author = "Soumitra Dinda and Siddiqui, {Anjila I.} and Snehanjali Behera and Biswajit Mondal",

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AU - Dinda, Soumitra

AU - Siddiqui, Anjila I.

AU - Behera, Snehanjali

AU - Mondal, Biswajit

PY - 2023/10/6

Y1 - 2023/10/6

N2 - The role of covalent attachment of benzoquinone/hydroquinone as electron-proton transfer mediators in ORR is investigated, and it is found that the catalysis is much more efficient as compared to Co(Sal) (Sal = salophen) alone or Co(Sal) and quinone used separately in terms of selectivity toward H2O formation. While Co(Sal) has only a 3% Faradaic yield for H2O formation, under the same conditions, the Faradaic yield for H2O formation is 80% with Co(Sal-H2Q).

AB - The role of covalent attachment of benzoquinone/hydroquinone as electron-proton transfer mediators in ORR is investigated, and it is found that the catalysis is much more efficient as compared to Co(Sal) (Sal = salophen) alone or Co(Sal) and quinone used separately in terms of selectivity toward H2O formation. While Co(Sal) has only a 3% Faradaic yield for H2O formation, under the same conditions, the Faradaic yield for H2O formation is 80% with Co(Sal-H2Q).

KW - aerobic oxidation

KW - cobalt

KW - electrocatalysis

KW - electron−proton transfer mediator

KW - oxygen reduction reaction

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DO - 10.1021/acscatal.3c03817

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JO - ACS Catalysis

JF - ACS Catalysis

IS - 19

ER -

Demystifying the Role of Covalently Attached Electron-Proton Transfer Mediator in Oxygen Reduction Reaction Catalyst

Abstract

Keywords

ASJC Scopus subject areas

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