中文摘要：

通过层层自组装技术在氧化铟锡（ITO）电极上制备Keggin型硼钨铜杂多酸/聚酰胺-胺有机-无机复合多层膜。利用X射线光电子能谱（XPS）、UV-Vis光谱和原子力显微镜（AFM）等手段对多层膜的组成和表面形貌进行了表征。结果表明,杂多酸阴离子和聚酰胺-胺树形分子通过静电相互作用形成了多层膜且膜的增长均匀。杂多酸阴离子组装到聚酰胺-胺上聚集形成的纳米簇颗粒度均匀、单分散性好,纳米簇直径为30～45nm,高度约为25～40nm。循环伏安法测试结果表明,在酸性水溶液中该膜修饰电极的稳定性良好,对亚硝酸盐具有良好的催化活性。

英文摘要：

The multilayer composite films consisting of K7[CuBW11O39] with Keggin structure and G4 poly（amidoamine）（PAMAM） dendrimer were fabricated on the ITO electrodes by layer-by-layer self-assembly technique.The obtained films were characterized by X-ray photoelectron spectroscopy（XPS）,UV-Vis and atomic force microscopy（AFM）.It was shown that the incorporation of [CuBW11O39]7-and PAMAM were alternately assembled into multilayer uniform films.The nanoparticles consisting of [CuBW11O39]7-assembled on PAMAM were homogeneous in size and highly dispersed.These particles size were 30-45nm in diameter and 25-45nm in height.Cyclic voltammetry showed that the multilayer films were stable and exhibited good catalytic activities for the reduction of nitrite in acidic aqueous solution.