Recent progress in single-atom electrocatalysts: concept, synthesis, and applications in clean energy conversion
- 26 June 2018
- journal article
- review article
- Published by Royal Society of Chemistry (RSC) in Journal of Materials Chemistry A
- Vol. 6 (29), 14025-14042
- https://doi.org/10.1039/c8ta04064h
Abstract
Electrochemical energy plays a key role in direct conversion into value-added products by using renewable electricity. Single-atom catalysts (SACs) can maximize the efficiency of metal-atom utilization, thus achieving high activity, stability, and selectivity in electrocatalytic reactions. SACs can overcome some limitations of bulk materials in electrocatalytic applications. In this review, we introduce SACs consisting of various single metal atoms, including noble and transition metals, anchored on various supports, such as metals, metal oxides, porous carbon, graphene, and g-C3N4. These catalysts possessed various binding modes between the single atoms and anchoring sites. We also review and highlight novel and promising methods to obtain SACs. Such methods include wet chemistry, metal etching, electrodeposition, and metal–organic-framework-derived methods. We also focused on the electrocatalytic applications of SACs in representative electrochemical applications such as oxygen reduction, hydrogen evolution, oxygen evolution, carbon dioxide reduction, and nitrogen reduction reactions. Significantly, the electrocatalytic performance can be tuned by engineering the structure of SACs in terms of binding mode, coordination number, and dispersion tendencies. Finally, we provide perspectives on the design of SACs for future applications in various electrocatalytic processes in energy conversion.Keywords
Funding Information
- National Natural Science Foundation of China (51472255)
- China Postdoctoral Science Foundation (2017M621986)
This publication has 137 references indexed in Scilit:
- CO Oxidation on Supported Single Pt Atoms: Experimental and ab Initio Density Functional Studies of CO Interaction with Pt Atom on θ-Al2O3(010) SurfaceJournal of the American Chemical Society, 2013
- Single-Atom Catalysts: A New Frontier in Heterogeneous CatalysisAccounts of Chemical Research, 2013
- Single-atom Catalysis Using Pt/Graphene Achieved through Atomic Layer DepositionScientific Reports, 2013
- High-Index Faceted Noble Metal NanocrystalsAccounts of Chemical Research, 2012
- Isolated Metal Atom Geometries as a Strategy for Selective Heterogeneous HydrogenationsScience, 2012
- The role of titanium nitride supports for single-atom platinum-based catalysts in fuel cell technologyPhysical Chemistry Chemical Physics, 2012
- Single Atom Hot-Spots at Au–Pd Nanoalloys for Electrocatalytic H2O2 ProductionJournal of the American Chemical Society, 2011
- Co3O4 nanocrystals on graphene as a synergistic catalyst for oxygen reduction reactionNature Materials, 2011
- Single-atom catalysis of CO oxidation using Pt1/FeOxNature Chemistry, 2011
- Solar Water Splitting CellsChemical Reviews, 2010