When a nanocarbon substrate is heated between 300 C and 320 C that is slightly above the Leidenfrost temperature and subsequently quenched in an aqueous solution containing a mixture of noble metal ions, a high density of nanoalloy nanoparticles (NPs) form on the surface. Large surface areas can be decorated in this way by nanoalloy NPs of the system (Au, Pt, Pd). Both binary AuPt, AuPd and PtPd as well as ternary nanoalloys are obtained. The chemical composition of the nanoalloys can be tuned by varying the ion mixture ratio of the solutions. The simultaneous reduction of the noble metal ions on the surface occurs without the need of any reducing agent, presumably owing to charge transfer from ionized species during the quenching process. The method yields nanocarbon-supported, highly adherent nanoalloy NPs, is materials efficient and cost effective because only the surface is modified with the costly noble metals. The supported nanoalloy NPs are exemplary applied to the electrooxidation of methanol and formic acid in acidic solutions, and show an overall high performance.

当将纳米碳基材加热到 300 至 320 摄氏度（略高于莱顿弗罗斯特温度）并随后在含有贵金属离子混合物的水溶液中淬火时，会在表面形成高密度的纳米合金纳米颗粒 (NP)。大表面积可以通过该系统的纳米合金纳米粒子 (Au、Pt、Pd) 以这种方式装饰。获得二元AuPt、AuPd和PtPd以及三元纳米合金。纳米合金的化学成分可以通过改变溶液的离子混合比来调整。表面上贵金属离子的同时还原不需要任何还原剂，这可能是由于淬火过程中电离物质的电荷转移。该方法产生纳米碳支撑的、高度粘附的纳米合金纳米颗粒，是材料高效且具有成本效益的，因为只有表面用昂贵的贵金属改性。负载型纳米合金纳米颗粒在酸性溶液中甲醇和甲酸的电氧化方面具有示范作用，并表现出整体的高性能。