Preparation, characterization and catalyses of light-transition-metaloble-metal bimetallic alloy nanoclusters

摘要

Colloidal dispersions of bimetallic alloy nanoclusters of light transition metals like Cu, Ni, Fe and noble metals like Pd, Pt, and Rh were prepared by using ethylen glycol as a reductive solvent and metal hydroxide colloids as metal precursors. Even though the nanoclusters of light transition metals are easily oxidized by oxygen and thus difficult to be handled under practical conditions, the bimetallic alloy nanoclusters containing these light transition metals at high concentrations are enough stable under air at room temperature and thus enough easily handled to be used as catalysts for hydration of nitrile to amide (Cu/Pd), reduction of nitro to amino group (Ni/Pd), etc.