摘要
用化学还原法制备Au-Pd双金属混合纳米胶体溶液,然后负载在活性炭上获得Au-Pd/C催化剂,利用TEM表征了纳米粒子负载前后的尺寸与形态,并用XPS技术表征了纳米Au-Pd/C催化剂上Au、Pd的表面化学状态,讨论了胶体溶液混合前后所得到的催化剂上Au、Pd的结合能变化。结果得到了Au混合"肠状"Pd纳米线的Au-Pd/C催化剂,两者结合产生的协同催化效应同时降低了Au和Pd的结合能。
The Au-Pd bimetallic mixed nano-colloidal solution was prepared by chemical reduction,and then it was loaded onto activated carbon to obtain Au-Pd/C catalyst.The size and morphology of nanocrystalline particles before and after loading were characterized by TEM,and the surface chemical state of Au,Pd on nano Au-Pd/C catalyst was characterized by XPS technique.The change of the binding energy of Au,Pd on the catalyst obtained before and after mixing of the colloidal solution was discussed.The Au-Pd/C catalyst of Au mixed with "intestinal"Pd nanowires was obtained,and the synergistic catalytic effect resulted from the combination decreased the binding energy of Au and Pd at the same time.
引文
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