Sao-Joao S, Giorgio S, Penisson J M, Chapon C, Bourgeois S, Henry C
CRMCN-CNRS, Campus de Luminy, Case 913, 13288 Marseille Cédex 9, France.
J Phys Chem B. 2005 Jan 13;109(1):342-7. doi: 10.1021/jp040473i.
Homogeneous collections of Pd-Ni core-shell nanoparticles have been prepared by decomposition of metal-organic compounds and studied by several electron microscopy techniques: transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDS), high-resolution transmission electron microscopy (HRTEM), energy-filtered microscopy (EFTEM), and by X-ray photoelectron spectroscopy (XPS). The physical and chemical properties of the Pd shell are supposed to depend on its electronic properties, which are influenced by the presence of the Ni core and by the deformation in the Pd lattice. Here, the interfacial structure of Pd/Ni and the lattice deformations in the core and the shell are studied in detail. The catalytic properties of the pure metal and the bimetallic particles, toward CO oxidation, have been investigated.
通过金属有机化合物的分解制备了均匀的钯镍核壳纳米颗粒集合体，并采用几种电子显微镜技术进行了研究：透射电子显微镜（TEM）、能量色散X射线光谱（EDS）、高分辨率透射电子显微镜（HRTEM）、能量过滤显微镜（EFTEM）以及X射线光电子能谱（XPS）。钯壳的物理和化学性质被认为取决于其电子性质，而电子性质会受到镍核的存在以及钯晶格变形的影响。在此，详细研究了钯/镍的界面结构以及核与壳中的晶格变形。研究了纯金属和双金属颗粒对一氧化碳氧化的催化性能。
