作　　者： ; ; ; ;

机构地区： 宿州学院化学与生命科学学院自旋电子与纳米材料安徽省重点实验室

出　　处： 《稀有金属材料与工程》 2012年第10期1809-1813,共5页

摘　　要： 利用层层静电自组装技术将聚乙烯亚胺(PEI-Ag+)、PdCl42-交替沉积在基底上,然后用硼氢化钠还原,构筑了含银/钯复合纳米粒子的PEI-Ag/Pd纳米复合薄膜。通过扫描电子显微镜(FESEM),X射线光电子能谱(XPS)和循环伏安(CV)等手段对复合膜的成分、微结构和性质进行了测试分析。膜上生成了不规则和立方体状的银/钯纳米复合物,导致膜表面有一定的粗糙度。结果表明,双金属{PEI-Ag/Pd}n复合膜比单金属{PEI/Pd}n或{PEI-Ag/PSS}n膜对多巴胺的氧化有更好的电催化活性。 Nanocomposite thin films containing Ag/Pd nanoparticles PEI-Ag/Pd were formed by alternating adsorption of PEI-Ag＋ and PdCl4 2by a layer-by-layer self-assembly technique and subsequent postdeposition reduction by sodium borohydride（NaBH 4）.The composition,microstructure and properties were characterized by field emission scanning electron microscopy（FESEM）,X-ray photoelectron spectroscopy（XPS）,and cyclic voltammetry（CV）.The Ag/Pd nanocomposites which are irregular and cubic are formed in the films,resulting in a rough surface of the composite film.The results indicate that the {PEI-Ag/Pd}n nanocomposite film exhibits better electrocatalytic activity for the oxidation of dopamine than {PEI/Pd} n and {PEI-Ag/PSS}n films.

关 键 词： 纳米复合薄膜 层层自组装 电催化

领　　域： [理学] [理学]