Two-Dimensional Metastable-Phase Nickel Hexagonal Nanosheets for Highly-Performance Electrochemical Acetone Hydrogenation.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 41444485.
- Also identified by DOI 10.1038/s41467-025-67839-6 and PMC identifier 12855918.
- Licence recorded as CC BY-NC-ND.
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Abstract
Electrocatalytic acetone hydrogenation into high-value alcohols offers a sustainable alternative to thermal methods. However, developing non-noble metal catalysts with superior performance for electrocatalytic acetone hydrogenation remains challenging. Two-dimensional non-noble metal structure with metastable-phase active sites is promising due to its high-energy structure and unique electronic environment. However, its precise synthesis remains a great challenge. In this work, we report a two-dimensional metastable hexagonal close-packed phase nickel nanosheets (hcp Ni NSs) with a space group of P6<sub>3</sub>/mmc. In the electrocatalytic acetone hydrogenation, it achieves 95.0 % acetone conversion with 100 % isopropanol selectivity. Notably, in the scale-up experiment, the hcp Ni NSs also exhibit 11.51 g g<sub>cat</sub><sup>-1</sup> h<sup>-1</sup> isopropanol production rate at a current density of -250 mA cm<sup>-2</sup>. Furthermore, this catalyst is widely applicable to various carbonyl compounds. Mechanism study shows that hcp Ni NSs enable strong acetone adsorption and rapid isopropanol desorption.