Highly enhanced room-temperature single-atom catalysis of two-dimensional organic-inorganic multiferroics Cr(half-fluoropyrazine)2 for CO oxidation

Feixiang Zhang, Panshuo Wang, Yandi Zhu, Jinlei Shi, Rui Pang, Xiaoyan Ren () and Shunfang Li ()
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Feixiang Zhang: Zhengzhou University
Panshuo Wang: Zhengzhou University
Yandi Zhu: Zhengzhou University
Jinlei Shi: Zhengzhou University
Rui Pang: Zhengzhou University
Xiaoyan Ren: Zhengzhou University
Shunfang Li: Zhengzhou University

Nature Communications, 2025, vol. 16, issue 1, 1-11

Abstract: Abstract In modern chemistry, the development of highly efficient room-temperature catalysts is of great significance and remains a long-standing challenge in various typical reactions. Here, we theoretically demonstrate that the two-dimensional (2D) multiferroic, Cr(half-fluoropyrazine)2 [Cr(h-fpyz)2], is a promising single-atom catalyst (SAC) operating at room temperature for CO oxidation. The rate-limiting barrier is merely 0.325 eV, leading to a reaction rate (i.e., 3.47 × 106 s−1) of six orders of magnitude higher than its monoferroic derivative [Cr(pyz)2], due to the synergetic effects of two aspects. First, the more flexible ligand rotations in Cr(h-fpyz)2 facilitate the activation of O2 molecule, simultaneously enhancing the charge transfer and spin-accommodation process. Second, on Cr(h-fpyz)2, O2 adsorption induces a distinctly lower local positive electric field, reducing the electrostatic repulsion of the polar CO molecule. These findings may also pave the way for establishing highly efficient SAC platforms based on 2D multiferroics where multidegree of freedom (e.g., spin, polarity) synergistically matter.

Date: 2025
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DOI: 10.1038/s41467-025-56863-1

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