A bioinspired water oxidation catalyst that is ∼1/10th as active as the photosystem II oxygen evolving center at pH 7: a study of activity and stability factors

Danijel Boskovic; Richard Terrett; Matthew Longhurst; Sabeel Basheer; Alireza Ariafard; Pawel Wagner; Ronald J. Pace; Rob Stranger; Gerhard F. Swiegers

doi:10.1039/d4dt02336f

A bioinspired water oxidation catalyst that is ∼1/10^th as active as the photosystem II oxygen evolving center at pH 7: a study of activity and stability factors

Danijel Boskovic, Richard Terrett, Matthew Longhurst, Sabeel Basheer, Alireza Ariafard, Pawel Wagner, Ronald J. Pace, Rob Stranger^*, Gerhard F. Swiegers^*

^*Corresponding author for this work

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

Abstract

The activity and stability of a heterogeneous water oxidation catalyst inspired by the Photosystem II - Oxygen Evolving Center (PSII-OEC) is reported. Ca-doped birnessite MnO_x supported on a liquid crystalline reduced graphene oxide (LCrGO) substrate exhibited unprecedented performance for an abiological catalyst at pH 7, including an exceedingly low onset overpotential of 0.52 V (vs. 0.48 V reported for the PSII-OEC, 0.75 V for Pt, and 0.72 V for birnesite MnO_x) and remarkably high activity per unit area at 0.56 V overpotential (∼10% that of a hypothetical, closely-packed monolayer of OEC sites at their optimum density of 10¹⁴ sites per cm²).

Original language	English
Pages (from-to)	17783-17788
Number of pages	6
Journal	Dalton Transactions
Volume	53
Issue number	44
DOIs	https://doi.org/10.1039/d4dt02336f
Publication status	Published - 29 Oct 2024

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Boskovic, D., Terrett, R., Longhurst, M., Basheer, S., Ariafard, A., Wagner, P., Pace, R. J., Stranger, R., & Swiegers, G. F. (2024). A bioinspired water oxidation catalyst that is ∼1/10^th as active as the photosystem II oxygen evolving center at pH 7: a study of activity and stability factors. Dalton Transactions, 53(44), 17783-17788. https://doi.org/10.1039/d4dt02336f

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title = "A bioinspired water oxidation catalyst that is ∼1/10th as active as the photosystem II oxygen evolving center at pH 7: a study of activity and stability factors",

abstract = "The activity and stability of a heterogeneous water oxidation catalyst inspired by the Photosystem II - Oxygen Evolving Center (PSII-OEC) is reported. Ca-doped birnessite MnOx supported on a liquid crystalline reduced graphene oxide (LCrGO) substrate exhibited unprecedented performance for an abiological catalyst at pH 7, including an exceedingly low onset overpotential of 0.52 V (vs. 0.48 V reported for the PSII-OEC, 0.75 V for Pt, and 0.72 V for birnesite MnOx) and remarkably high activity per unit area at 0.56 V overpotential (∼10% that of a hypothetical, closely-packed monolayer of OEC sites at their optimum density of 1014 sites per cm2).",

author = "Danijel Boskovic and Richard Terrett and Matthew Longhurst and Sabeel Basheer and Alireza Ariafard and Pawel Wagner and Pace, {Ronald J.} and Rob Stranger and Swiegers, {Gerhard F.}",

note = "Publisher Copyright: {\textcopyright} 2024 The Royal Society of Chemistry.",

year = "2024",

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doi = "10.1039/d4dt02336f",

language = "English",

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Boskovic, D, Terrett, R, Longhurst, M, Basheer, S, Ariafard, A, Wagner, P, Pace, RJ, Stranger, R & Swiegers, GF 2024, 'A bioinspired water oxidation catalyst that is ∼1/10^th as active as the photosystem II oxygen evolving center at pH 7: a study of activity and stability factors', Dalton Transactions, vol. 53, no. 44, pp. 17783-17788. https://doi.org/10.1039/d4dt02336f

TY - JOUR

T1 - A bioinspired water oxidation catalyst that is ∼1/10th as active as the photosystem II oxygen evolving center at pH 7

T2 - a study of activity and stability factors

AU - Boskovic, Danijel

AU - Terrett, Richard

AU - Longhurst, Matthew

AU - Basheer, Sabeel

AU - Ariafard, Alireza

AU - Wagner, Pawel

AU - Pace, Ronald J.

AU - Stranger, Rob

AU - Swiegers, Gerhard F.

PY - 2024/10/29

Y1 - 2024/10/29

N2 - The activity and stability of a heterogeneous water oxidation catalyst inspired by the Photosystem II - Oxygen Evolving Center (PSII-OEC) is reported. Ca-doped birnessite MnOx supported on a liquid crystalline reduced graphene oxide (LCrGO) substrate exhibited unprecedented performance for an abiological catalyst at pH 7, including an exceedingly low onset overpotential of 0.52 V (vs. 0.48 V reported for the PSII-OEC, 0.75 V for Pt, and 0.72 V for birnesite MnOx) and remarkably high activity per unit area at 0.56 V overpotential (∼10% that of a hypothetical, closely-packed monolayer of OEC sites at their optimum density of 1014 sites per cm2).

AB - The activity and stability of a heterogeneous water oxidation catalyst inspired by the Photosystem II - Oxygen Evolving Center (PSII-OEC) is reported. Ca-doped birnessite MnOx supported on a liquid crystalline reduced graphene oxide (LCrGO) substrate exhibited unprecedented performance for an abiological catalyst at pH 7, including an exceedingly low onset overpotential of 0.52 V (vs. 0.48 V reported for the PSII-OEC, 0.75 V for Pt, and 0.72 V for birnesite MnOx) and remarkably high activity per unit area at 0.56 V overpotential (∼10% that of a hypothetical, closely-packed monolayer of OEC sites at their optimum density of 1014 sites per cm2).

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U2 - 10.1039/d4dt02336f

DO - 10.1039/d4dt02336f

M3 - Article

C2 - 39495212

AN - SCOPUS:85208816179

SN - 1477-9226

VL - 53

SP - 17783

EP - 17788

JO - Dalton Transactions

JF - Dalton Transactions

IS - 44

ER -

A bioinspired water oxidation catalyst that is ∼1/10^th as active as the photosystem II oxygen evolving center at pH 7: a study of activity and stability factors

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