Issue 19, 2022

High-entropy-alloy nanoparticles synthesized by laser metallurgy using a multivariate MOF

Abstract

We report the synthesis of multivariate MOFs with combinations of metal ions, including Mn2+, Fe3+, Co2+, Ni2+, Cu2+ and Zn2+. The permanent porosity and the evenly distributed metal components make these porous crystals ideally suited for the synthesis of alloy nanoparticles. Using a laser, these MOFs are converted in air to alloy nanoparticles of binary (FeNi, FeCo), ternary (FeCoNi) and high-entropy-alloys with quinary (MnFeCoNiCu, MnFeCoNiZn) metals. One member, FeNi alloy nanoparticles with a narrow particle size distribution around 7 nm, shows a low overpotential of 282 mV at a current density of 10 mA cm−2 in the oxygen evolution reaction (OER), better than those of the single metal counterparts. This demonstrates the possibility of using MOFs to produce alloy nanoparticles with multiple metal components by a laser.

Graphical abstract: High-entropy-alloy nanoparticles synthesized by laser metallurgy using a multivariate MOF

Supplementary files

Article information

Article type
Research Article
Submitted
20 Jun 2022
Accepted
08 Aug 2022
First published
16 Aug 2022

Mater. Chem. Front., 2022,6, 2796-2802

High-entropy-alloy nanoparticles synthesized by laser metallurgy using a multivariate MOF

W. Yan, H. Jiang, W. Yi, C. Zhao, Y. Xia, H. Cong, L. Tang, G. J. Cheng, J. He and H. Deng, Mater. Chem. Front., 2022, 6, 2796 DOI: 10.1039/D2QM00588C

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