title: In situ electro-deposition of Pt micro-nano clusters on the surface of {[PMo12O40]3-/PAMAM}n multilayer composite films and their electrocatalytic activities regarding methanol oxidation.
abstract: The {[PMo(12)O(40)](3-)/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)](3-)/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)](3-)/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)](3-)/PAMAM}(n) multilayer films. Pt(-clusters)-{PMo(12)/PAMAM}(3) composite films demonstrate good electrocatalytic activities regarding methanol oxidation and improved tolerance of CO.
authors.affiliation: College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, Fujian, China.
authors.forename: Zhong-Shui
authors.initials: ZS
authors.lastname: Li
authors.forename: Shen
authors.initials: S
authors.lastname: Lin
authors.forename: Zu-liang
authors.initials: ZL
authors.lastname: Chen
authors.forename: Yuan-De
authors.initials: YD
authors.lastname: Shi
authors.forename: Xiao-Mei
authors.initials: XM
authors.lastname: Huang