室温下以水合肼为还原剂,在N,N-二甲基甲酰胺中合成了团聚态的AuPd双金属纳米粒子。X射线衍射(XRD)表征结果证明,所合成的AuPd纳米粒子具有面心立方结构。高分辨透射电子显微镜表征表明,AuPd纳米粒子表面存在大量孪晶结构和晶面层错等表面缺陷。活性评价结果表明,具有高密度晶面缺陷的双团聚态AuPd纳米粒子对甲醇氧化表现出较好的催化活性。 At room temperature, hydrazine hydrate was used as the reductant to synthesize the agglomerated AuPd bimetallic nanoparticles in N, N-dimethylformamide. X-ray diffraction (XRD) characterization results show that the synthesized AuPd nanoparticles have a face-centered cubic structure. High-resolution transmission electron microscopy showed that a large number of surface defects were observed on the surface of AuPd nanoparticles, such as twins and delaminated layers. The results of the activity evaluation showed that the bimodal AuPd nanoparticles with high-density crystal plane defects showed good catalytic activity for methanol oxidation.