This report describes the first example of the generation of composition‐defined bimetallic Mo‐Pt sub‐nanosized particles. UV/Vis titration experiments were carried out in order to control the mole ratio of Mo and Pt using a phenylazomethine dendrimer as a molecular template. After supporting the assemblies onto the carbon support, reductive calcination under an atmosphere of H₂ afforded the samples of sub‐nanosized particles supported on the carbon (Mo₄Pt₈ and Mo₄Pt₂₄). The Mo‐Pt particles with sub nano‐size were confirmed by scanning transmission electron microscopy with energy‐dispersive X‐ray spectrometry, and the size distribution (Mo₄Pt₈: 0.9 ± 0.2 nm; Mo₄Pt₂₄: 1.0 ± 0.2 nm) and the Mo/Pt mole ratio (Mo₄Pt₈: 1/1.8 ± 0.2, Mo₄Pt₂₄: 1/5.2 ± 0.4) were revealed, respectively. Moreover, it was suggested that the interactions between Mo and Pt lead increase of a thermal stability of the Mo‐Pt sub‐nanosized particles.

中文翻译：

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成分定义的双金属Mo-Pt亚纳米颗粒

该报告描述了生成成分定义的双金属Mo-Pt亚纳米粒子的第一个示例。为了进行紫外线/可见光滴定实验，以苯基偶氮甲碱树枝状大分子为分子模板来控制钼和铂的摩尔比。将组件支撑在碳载体上后，在H ₂气氛下进行还原煅烧，得到了负载在碳上的亚纳米级颗粒样品（Mo ₄ Pt ₈和Mo ₄ Pt ₂₄）。通过具有能量色散X射线能谱的扫描透射电子显微镜和尺寸分布（Mo ₄ Pt₈：0.9±0.2 nm; 揭示了Mo ₄ Pt ₂₄：1.0±0.2nm）和Mo / Pt摩尔比（ Mo ₄ Pt ₈：1 / 1.8±0.2， Mo ₄ Pt ₂₄：1 / 5.2±0.4）。此外，有人指出，Mo和Pt之间的相互作用导致Mo-Pt亚纳米颗粒的热稳定性提高。