Suppressing Jahn-Teller distortion of MnO2 via B-Ni dual single-atoms integration for methane catalytic combustion

Huayu Gu, Fanyu Wang, Sai Chen, Jintong Lan, Jun Wang, Chunlei Pei, Xiao Liu () and Jinlong Gong ()
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Huayu Gu: Central China Normal University
Fanyu Wang: Central China Normal University
Sai Chen: Tianjin University
Jintong Lan: Central China Normal University
Jun Wang: Central China Normal University
Chunlei Pei: Tianjin University
Xiao Liu: Central China Normal University
Jinlong Gong: Tianjin University

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

Abstract: Abstract Precisely managing electron transfer pathways throughout the catalytic reaction is paramount for bolstering both the efficacy and endurance of catalysts, offering a pivotal solution to addressing concerns surrounding host structure destabilization and cycling life degradation. This paper describes the integration of B-Ni dual single-atoms within MnO2 channels to serve as an electronic reservoir to direct the electron transfer route during methane catalytic combustion. Comprehensive analysis discovers that B atoms weaken the interaction between O and Mn atoms by forming bonds with lattice oxygen atoms. Meanwhile, Ni atoms facilitate electron transfer to achieve the heightened activity of MnO2. The B-Ni dual-sites instead of Mn (IV) could accommodate excess electrons generated during the reaction to inhibit the formation of high spin Mn (III) species, thereby hindering the Jahn-Teller distortion and maintaining the catalyst stability. This work demonstrates an effective modification strategy to substantially prolong the service life of MnO2-based materials.

Date: 2025
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DOI: 10.1038/s41467-025-56281-3

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