为研究Pd/Au纳米结构制备和电催化性能、 控制粒子大小组分和自旋, 用油浴热分解方法制备了核/壳纳米结构Pd/Au双金属合金纳米颗粒, 采用PVP和多元醇作表面活性剂和稳定剂, 依据溶液浓度、 颗粒大小、 吸附能控制晶相获得了均匀、 一致的2层和3层Pd/Au纳米样品, 并采用HAADF和HRTEM测试了纳米结构尺寸形貌, 用EDS测试了成分分布, 试验产物用TEM/XRD进行了表征, 结果表明, Pd/Au具有面心立方八面体结构, 与Au/Pd核壳不同, 纳米Pd/Au具有活性、 耐久性、 电催化性和稳定性。

The present paper describes the synthesis of nanostructure Pd/Au core/shell and study of electric catalysis, control of particle size composition and spins. Oil-bathing thermal decomposition was adopted to prepare the core/shell Pd/Au bimetallic alloy nanoparticles. The PVP and ethylene glycol were used as surfactant and stabilizing agent. Based on the solution concentration, size, and surface adsorption energy and control of the phase, the uniform homogeneous Pd/Au nanostructure was obtained. The experiments measured the HAADF and HRTEM to test the shape of nanostructure and EDS particle distribution. The products were characterized by TEM/XRD and XPS. The results show that Pd/Au nanoparticles have the structure of truncated octahedron different from Au/Pd core/shell. The Pd/Au nanoparticles have the properties of activity, wear, electric catalysis and stability.