Hydrogenated borophene enabled synthesis of multielement intermetallic catalysts

Xiaoxiao Zeng, Yudan Jing, Saisai Gao, Wencong Zhang, Yang Zhang, Hanwen Liu, Chao Liang, Chenchen Ji, Yi Rao, Jianbo Wu, Bin Wang (), Yonggang Yao () and Shengchun Yang ()
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Xiaoxiao Zeng: Xi’an Jiaotong University
Yudan Jing: Xi’an Jiaotong University
Saisai Gao: Xi’an Jiaotong University
Wencong Zhang: Shanghai Jiao Tong University
Yang Zhang: Xi’an Jiaotong University
Hanwen Liu: Huazhong University of Science and Technology
Chao Liang: Xi’an Jiaotong University
Chenchen Ji: Xinjiang University
Yi Rao: Huazhong University of Science and Technology
Jianbo Wu: Shanghai Jiao Tong University
Bin Wang: Xi’an Jiaotong University
Yonggang Yao: Huazhong University of Science and Technology
Shengchun Yang: Xi’an Jiaotong University

Nature Communications, 2023, vol. 14, issue 1, 1-11

Abstract: Abstract Supported metal catalysts often suffer from rapid degradation under harsh conditions due to material failure and weak metal-support interaction. Here we propose using reductive hydrogenated borophene to in-situ synthesize Pt/B/C catalysts with small sizes (~2.5 nm), high-density dispersion (up to 80 wt%Pt), and promising stability, originating from forming Pt-B bond which are theoretically ~5× stronger than Pt-C. Based on the Pt/B/C module, a series (~18 kinds) of carbon supported binary, ternary, quaternary, and quinary Pt intermetallic compound nanocatalysts with sub-4 nm size are synthesized. Thanks to the stable intermetallics and strong metal-support interaction, annealing at 1000 °C does not cause those nanoparticles sintering. They also show much improved activity and stability in electrocatalytic oxygen reduction reaction. Therefore, by introducing the boron chemistry, the hydrogenated borophene derived multielement catalysts enable the synergy of small size, high loading, stable anchoring, and flexible compositions, thus demonstrating high versatility toward efficient and durable catalysis.

Date: 2023
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DOI: 10.1038/s41467-023-43294-z

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