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.

中文翻译：

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多变量MOF激光冶金合成高熵合金纳米粒子

我们报道了金属离子组合的多元MOFs的合成，包括Mn ²⁺、Fe ³⁺、Co ²⁺、Ni ²⁺、Cu ²⁺和Zn ²⁺。永久性孔隙率和均匀分布的金属成分使这些多孔晶体非常适合合成合金纳米粒子。使用激光，这些 MOF 在空气中转化为二元（FeNi、FeCo）、三元（FeCoNi）和具有五元（MnFeCoNiCu、MnFeCoNiZn）金属的高熵合金的合金纳米颗粒。一个成员，具有约 7 nm 窄粒度分布的 FeNi 合金纳米粒子，在 10 mA cm ^{-2的电流密度下显示出 282 mV 的低过电势}在析氧反应（OER）中，优于单金属对应物。这证明了使用 MOF 通过激光生产具有多种金属成分的合金纳米颗粒的可能性。