中文摘要：

在这份报纸，我们报导为有核心壳的二金属的 Au@Pd nanoparticles 的合成的热减少方法在 graphene 表面上组织的一出简单一步舞。Au@Pd–G composites 的这种新类型被传播电子显微镜学，高决定传播电子显微镜学， X 光检查光电子光谱学和 X 光检查衍射描绘。有 11nm 的一条平均直径的 Au@Pd nanoparticles 很好在 graphene 表面，和 Au 核心数量以及 Pd 壳厚度上被驱散，这被发现份量上能被装载金属性的先锋，和深奥核心壳的不同数量控制结构形成机制也被讨论。第三的 Pt/Au@Pd–G composites 能也是由做的随后的磅的 synthetized。向在酸的媒介的甲醇电镀物品氧化的 Au@Pd–G composites 的催化表演被调查。结果证明 Au@Pd–G composites 展出更高催化的活动，更好的稳定性和更强壮的忍耐到比 Pd–G 和 Au–G 对应物毒害的公司。

英文摘要：

In this paper, we report a simple one-step thermal reducing method for synthesis of bimetallic Au@Pd nanoparticles with core-shell structures on the graphene surface. This new type of Au@Pd-G composites is characterized by transmission electron microscopy, high resolution transmission electron microscopy, X-ray photoelectron spectroscopy and X-ray diffraction. It is found that Au@Pd nanoparticles with an average diameter of 11 nm are well dispersed on the graphene surface, and the Au core quantity as well as the Pd shell thickness can be quantitatively controlled by loading different amounts of metallic precursors, and the involved core-shell structure formation mechanism is also discussed. The ternary Pt/Au@Pd-G composites can also be synthetized by the subsequent Pt doping. The catalytic performance of Au@Pd-G composites toward methanol electro-oxidation in acidic media is investigated. The results show that Au@Pd-G composites exhibit higher catalytic activity, better stability and stronger tolerance to CO poisoning than Pd-G and Au-G counterparts.