快速合成超细CuSnNi纳米颗粒催化剂的CO<sub>2</sub>电化学还原性能

doi:10.19976/j.cnki.43-1448/TF.2025036

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Abstract Four groups of CuSnNi nanoparticle catalysts with ordered structures, ultra-small sizes, and Cu, Sn, Ni atomic ratios of 1∶1∶1, 2∶1∶1, 1∶2∶1, 1∶1∶2, respectively, were synthesized by liquid-phase reduction method to investigate their CO₂ electrochemical reduction performance and catalytic mechanism. The results show that all four groups of catalysts can convert CO₂ into syngas (CO+H₂) and HCOOH, when the atomic ratio of Cu, Sn, and Ni is 2∶1∶1, the Faraday efficiency of the catalytic products HCOOH+CO up to 40%, with the selectivity of HCOOH up to 29%, and the molar ratio of H₂/CO in the syngas keeps in the range of 4-5 in all the potential ranges. The H₂/CO molar ratio of the catalyst with the ratio of 1∶1∶2 has the largest adjustable range (5-17). The H₂/CO molar ratio is related to the elemental ratio, but not to the entropy. The catalyst with the atomic ratio of Cu, Sn, and Ni of 2∶1∶1 has the best stability. Strong interactions between different metal atoms and surface unsaturated sites in CuSnNi can modulate the electronic structure of different metal atoms and optimize the adsorption and desorption strength of different intermediates on the catalyst surface.

Key words： CuSnNi alloy nanoparticle CO₂ electrochemical reduction liquid-phase reduction method tunable product syngas formic acid

Received: 09 April 2025 Published: 13 October 2025

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	Articles by authors
	ZHANG Yingping
	SONG Yijian
	LI Weijie
	ZHOU Chengshang
	LIU Yong
	HAN Chao

Cite this article:

ZHANG Yingping,SONG Yijian,LI Weijie, et al. CO₂ electrochemical reduction performance of rapidly synthesized ultrafine CuSnNi nanoparticle catalysts[J]. Materials Science and Engineering of Powder Metallurgy, 2025, 30(4): 325-342.

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http://pmbjb.csu.edu.cn/EN/10.19976/j.cnki.43-1448/TF.2025036 OR http://pmbjb.csu.edu.cn/EN/Y2025/V30/I4/325

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