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<p>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.</p>

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Two-Dimensional Metastable-Phase Nickel Hexagonal Nanosheets for Highly-Performance Electrochemical Acetone Hydrogenation

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年12月24日

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  • Long Chen,
  • Zonghao Zhang,
  • Penghao Li,
  • Hanzhuo Luo,
  • Chenchen Li,
  • Sihui Pan,
  • Wei-Hsiang Huang,
  • Chih-Wen Pao,
  • Hao Yang,
  • Zhiwei Hu,
  • Qi Shao

摘要

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 P63/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 gcat-1 h-1 isopropanol production rate at a current density of −250 mA cm-2. 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.