Issue 11, 2022

Polyoxometalate-based materials: quasi-homogeneous single-atom catalysts with atomic-precision structures

Abstract

Polyoxometalates (POMs) are early-transition-metal oxide clusters with diverse structures and extensive functionality. Due to their excellent redox properties and stability, POM clusters can serve as ligands and supports for constructing single-atom catalysts (SACs) with atomic-precision structures, where the coordination states and loading of active sites can be controlled precisely. Metal-substituted POM clusters are also promising candidates to act as sub-nanometer building blocks, where neoteric morphologies and enhanced catalytic properties have been obtained using these cluster-based assemblies. Moreover, POM-based single-atom catalysts display the advantages of both heterogeneous and homogeneous catalysts, in addition to excellent solubility and reusability. This perspective summarizes recent progress relating to polyoxometalate-based single-atom catalysts, including the synthesis and applications of metal-substituted POM clusters and the use of cluster-based assemblies as single-atom catalysts. Future research directions and challenges are also expounded upon, and this work may allow a comprehensive understanding of and novel insights into cluster-based single-atom catalysts.

Graphical abstract: Polyoxometalate-based materials: quasi-homogeneous single-atom catalysts with atomic-precision structures

Article information

Article type
Review Article
Submitted
04 10 2021
Accepted
23 11 2021
First published
23 11 2021

J. Mater. Chem. A, 2022,10, 5758-5770

Polyoxometalate-based materials: quasi-homogeneous single-atom catalysts with atomic-precision structures

S. He, Q. Liu and X. Wang, J. Mater. Chem. A, 2022, 10, 5758 DOI: 10.1039/D1TA08577H

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