Hydrogen spillover-driven synthesis of high-entropy alloy nanoparticles as a robust catalyst for CO2 hydrogenation

High-entropy alloys (HEAs) have been intensively pursued as potentially advanced materials because of their exceptional properties. However, the facile fabrication of nanometer-sized HEAs over conventional catalyst supports remains challenging, and the design of rational synthetic protocols would pe...

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Bibliographic Details
Published in:Nature communications 2021-06, Vol.12 (1), p.3884-3884, Article 3884
Main Authors: Mori, Kohsuke, Hashimoto, Naoki, Kamiuchi, Naoto, Yoshida, Hideto, Kobayashi, Hisayoshi, Yamashita, Hiromi
Format: Article
Language:English
Subjects:
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147/143
639/301/299/1013
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639/638/77/887
Alloys
Carbon dioxide
Catalysis
Catalysts
Diffusion effects
Durability
Electron transfer
Entropy
Fabrication
High entropy alloys
Humanities and Social Sciences
Hydrogenation
Low temperature
multidisciplinary
Nanoalloys
Nanoparticles
Science
Science (multidisciplinary)
Synergistic effect
Titanium dioxide
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Summary:High-entropy alloys (HEAs) have been intensively pursued as potentially advanced materials because of their exceptional properties. However, the facile fabrication of nanometer-sized HEAs over conventional catalyst supports remains challenging, and the design of rational synthetic protocols would permit the development of innovative catalysts with a wide range of potential compositions. Herein, we demonstrate that titanium dioxide (TiO 2 ) is a promising platform for the low-temperature synthesis of supported CoNiCuRuPd HEA nanoparticles (NPs) at 400 °C. This process is driven by the pronounced hydrogen spillover effect on TiO 2 in conjunction with coupled proton/electron transfer. The CoNiCuRuPd HEA NPs on TiO 2 produced in this work were found to be both active and extremely durable during the CO 2 hydrogenation reaction. Characterization by means of various in situ techniques and theoretical calculations elucidated that cocktail effect and sluggish diffusion originating from the synergistic effect obtained by this combination of elements. Facile fabrication of high-entropy alloys (HEAs) nanoparticles (NPs) on conventional catalyst supports remains challenging. Here the authors show TiO2 is a promising platform for the low-temperature synthesis of supported CoNiCuRuPd HEA NPs with excellent activity and durability in CO2 hydrogenation.
ISSN:2041-1723
2041-1723
DOI:10.1038/s41467-021-24228-z