Iron-complex-based Catalytic System for High-performance Water Oxidation in Aqueous Media

Overview

Journal Nat Commun

Specialty Biology

Date 2025 Mar 5

PMID 40044652

Authors

Takumi Matsuzaki

Kento Kosugi

Hikaru Iwami

Tetsuya Kambe

Hisao Kiuchi

Yoshihisa Harada

Daisuke Asakura

Taro Uematsu

Susumu Kuwabata

Yutaka Saga

Mio Kondo

Shigeyuki Masaoka

Affiliations

Soon will be listed here.

Abstract

Water oxidation is the key reaction in natural and artificial photosyntheses but is kinetically and thermodynamically sluggish. Extensive efforts have been made to develop artificial systems comparable to the natural system. However, constructing a molecular system based on ubiquitous metal ions with high performance in aqueous media similar to a natural system, remains challenging. In this study, inspired by nature, we successfully achieve highly efficient water oxidation in aqueous media. By electrochemical polymerisation of a pentanuclear iron complex bearing carbazole moieties, we successfully integrate two essential features of the natural system: catalytic centre composed of ubiquitous metal ions and charge transporting site. The resulting material catalyses water oxidation with a Faradaic efficiency of up to 99% in aqueous media. Our results provide a strategy to develop catalytic systems for water oxidation.

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