Issue 31, 2020

Interfacial coordination assembly of tannic acid with metal ions on three-dimensional nickel hydroxide nanowalls for efficient water splitting

Abstract

Exploring cheap and efficient bifunctional electrocatalysts is highly desirable but challenging for sustainable production of hydrogen via electrocatalytic water splitting. Herein, a versatile strategy was demonstrated to controllably synthesize a family of metal ion-chelated tannic acid coatings on diverse metal hydroxide nanoarchitectures via the interfacial coordination assembly process. Typically, the interfacial coordination of tannic acid with a range of metal ions (e.g., Fe3+, Co2+, and Ni2+) enables the in situ formation of metal–ligand networks on nickel hydroxide nanowalls and other hierarchical substrates. Importantly, the obtained hierarchical coordination complex showed that its bifunctional electrocatalytic activity toward the oxygen evolution reaction and hydrogen evolution reaction is highly dependent on the chelated metal ions. The coordination coating of tannic acid with iron ions on nickel hydroxide nanowalls significantly enhanced the bifunctional electrocatalytic activity and achieved maximal activity toward overall water splitting with good long-term durability. This interfacial coordination assembly coating strategy is facile yet efficient, opening a new avenue for rational modulation of the surface properties of metal (hydro)oxides for promising applications.

Graphical abstract: Interfacial coordination assembly of tannic acid with metal ions on three-dimensional nickel hydroxide nanowalls for efficient water splitting

Supplementary files

Article information

Article type
Paper
Submitted
25 фев. 2020
Accepted
23 апр. 2020
First published
23 апр. 2020

J. Mater. Chem. A, 2020,8, 15845-15852

Interfacial coordination assembly of tannic acid with metal ions on three-dimensional nickel hydroxide nanowalls for efficient water splitting

Y. Wang, S. Chen, S. Zhao, Q. Chen and J. Zhang, J. Mater. Chem. A, 2020, 8, 15845 DOI: 10.1039/D0TA02229B

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements