Multimetallic nanoparticles (NPs) often exhibit enhanced catalytic properties that differ from their parent materials. Carefully exploring the structures of multimetallic NPs is a prerequisite for understanding the structure‐ and composition‐associated properties. Herein, intermetallic Pt/Sn NPs with tunable compositions are designed exploiting the beneficial properties of ionic liquids (ILs) in a one‐pot synthetic procedure. Metal salt precursors are reduced with triethylhydridoborate, whereby the cation of the triethylhydridoborate is adapted to the cation of the IL. Both the initial metal precursor ratio and the type of IL influence the structure of the NPs, with the effect of the IL being more pronounced. PtSn nanocrystals are obtained as phase pure products under optimized reaction conditions, whereby a microwave‐assisted approach leads to higher crystallinity. In the hydrogenation of α,β‐unsaturated aldehydes, the catalytic performance obviously depend on the NP composition. In bimetallic Pt/Sn NPs, higher Pt content leads to increased conversion, while increase in Sn increases selectivity to the cinnamic alcohol.

中文翻译：

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在离子液体中设计结构有序的Pt / Sn纳米粒子及其增强的催化性能

多金属纳米粒子（NPs）通常表现出不同于其母体材料的增强的催化性能。认真探索多金属NP的结构是了解与结构和组成相关的特性的前提。在本文中，具有可调谐成分的金属间Pt / Sn NPs是通过单罐合成程序利用离子液体（ILs）的有益特性而设计的。用氢硼氢化三乙酯还原金属盐前体，从而使氢硼氢化三乙酯的阳离子适合于IL的阳离子。初始金属前驱物比率和IL的类型都会影响NP的结构，IL的影响更为明显。在优化的反应条件下，将PtSn纳米晶体制成相纯产品，因此，微波辅助方法可提高结晶度。在α，β-不饱和醛的氢化反应中，催化性能明显取决于NP的组成。在双金属Pt / Sn NP中，较高的Pt含量可提高转化率，而Sn的增加可提高对肉桂醇的选择性。