Preparation of alloy nanoparticles using functionalized carbon nanofibers

贵金属如铂已被用作各种反应的催化活性成分。然而，由于催化剂的高成本，需要减少催化剂中贵金属的负载。有报道称，贵金属与过渡金属的合金化可以提高贵金属的催化活性。然而，制备小尺寸合金颗粒是一项具有挑战性的任务，因为合金的制备需要在高温下进行处理。在本研究中，我们证明了以纳米碳纤维为载体可以制备直径为几纳米的pt基合金纳米颗粒。碳纳米纤维的多孔结构阻止了合金颗粒在高温下的聚集。

Precious metals such as Pt have been utilized as catalytically active components for various reactions. However, it is required to reduce the loading of preciousmetals in the catalysts due to their high costs. It has been reported that the alloying of precious metals with transition metals enhances the catalytic activity of the precious metals. However, the preparation of alloy particles with small size is a challenging task, because the preparation of alloys needs the treatment at high temperatures. In the present study, we demonstrated that Pt-based alloy nanoparticles with diameters of a few nanometers can be prepared by using carbon nanofibers as supports. The porous structure of carbon nanofibers prevents the aggregation of the alloy particles at high temperatures.