College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, Fujian, China.
J Colloid Interface Sci. 2012 Feb 15;368(1):413-9. doi: 10.1016/j.jcis.2011.10.080. Epub 2011 Dec 6.
The {PMo(12)O(40)/PAMAM}(n) multilayer films are prepared by LBL electrostatic assembly technique, and their uniform and homogeneous traits have been verified by cyclic voltammetry. The {PMo(12)O(40)/PAMAM}(n) multilayer films with PAMAM as the outmost layer, having an open structure and exhibiting good penetrability for the solvent molecules at low pH, are used as matrices for electro-deposition of Pt micro-nano clusters in situ. X-ray photoelectron spectroscopy (XPS) analysis and field emission scanning electron microscope (FE-SEM) characterization show that the unique Pt micro-nano clusters with flower-like structure have been immobilized on the surface of {PMo(12)O(40)/PAMAM}(n) multilayer films. The morphologies of Pt micro-nano clusters are influenced by electro-deposition conditions such as deposition potential, deposition time, and the number of layers of {PMo(12)O(40)/PAMAM}(n) multilayer films. Pt(-clusters)-{PMo(12)/PAMAM}(3) composite films demonstrate good electrocatalytic activities regarding methanol oxidation and improved tolerance of CO.
采用层层静电自组装技术制备了{PMo(12)O(40)/PAMAM}(n)多层膜，并通过循环伏安法验证了其具有均匀一致的特性。以 PAMAM 为最外层的{PMo(12)O(40)/PAMAM}(n)多层膜具有开放结构，在低 pH 值下对溶剂分子表现出良好的渗透性，可用作电沉积原位 Pt 微纳米簇的基质。X 射线光电子能谱（XPS）分析和场发射扫描电子显微镜（FE-SEM）表征表明，独特的具有花状结构的 Pt 微纳米簇已固定在{PMo(12)O(40)/PAMAM}(n)多层膜的表面上。Pt 微纳米簇的形态受电沉积条件的影响，如沉积电位、沉积时间和{PMo(12)O(40)/PAMAM}(n)多层膜的层数。Pt(-簇)-{PMo(12)/PAMAM}(3)复合膜在甲醇氧化方面表现出良好的电催化活性，并且对 CO 的耐受性得到提高。
