▎ 摘　　要

In this work, ultrasmall Pd-Pt bimetallic nanoclusters with a uniform size of 2.0 nm monodispersed on beta-cyclodextrin functionalized reduced graphene oxide (beta-CD-RGO) were successfully prepared in aqueous solution at room temperature within 30 min without the need for any organic solvent or high temperature. The integration of beta-CD and RGO was responsible for the formation of the monodispersed 2.0 nm Pd-Pt bimetallic nanoclusters. Inspired by the monodisperse, ultrasmall, and pristine properties of the Pd-Pt clusters, the Pd-Pt@beta-CD-RGO nanohybrid displayed enhanced activity for methanol and ethanol oxidation in alkaline media in comparison with the commercial Pd/C catalysts. This facile and simple method is of significance for the preparation of bimetallic nanocatalysts with high catalytic activity on suitable supporting materials.