【摘要】 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。更多还原

【Abstract】 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.更多还原