title: Preparation of raspberry-like polypyrrole composites with applications in catalysis.
abstract: Raspberry-like composites were prepared by coating the silver/polypyrrole core/shell composites onto the surface of silica spheres via oxidation polymerization of pyrrole monomer with [Ag(NH3)2]+ ions as oxidants. The whole process allowed the absence of stabilizers, which greatly improved the quality of the conducting polymer composites. The morphology of the resulting composites was investigated, which can be described as raspberry-like; also, the structure and composition of the composites were characterized in detail. A possible formation mechanism was proposed. The present synthetic strategy substantially extended the scope of metal/conducting polymer composite synthesis. The raspberry-like composites exhibited excellent catalytic properties in the reduction of methylene blue dye with the reducing agent of sodium borohydride.
authors.affiliation: State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, People's Republic of China.
authors.forename: Tongjie
authors.initials: T
authors.lastname: Yao
authors.forename: Chuanxi
authors.initials: C
authors.lastname: Wang
authors.forename: Jie
authors.initials: J
authors.lastname: Wu
authors.forename: Quan
authors.initials: Q
authors.lastname: Lin
authors.forename: Hui
authors.initials: H
authors.lastname: Lv
authors.forename: Kai
authors.initials: K
authors.lastname: Zhang
authors.forename: Kui
authors.initials: K
authors.lastname: Yu
authors.forename: Bai
authors.initials: B
authors.lastname: Yang
mesh_terms: D002384:Catalysis; D010084:Oxidation-Reduction; D010316:Particle Size; D011108:Polymers / Q000138:chemical synthesis / Q000737:chemistry*; D011758:Pyrroles / Q000138:chemical synthesis / Q000737:chemistry*; D012822:Silicon Dioxide / Q000737:chemistry; D012834:Silver / Q000737:chemistry*; D013499:Surface Properties
chemical_list: D011108:Polymers; D011758:Pyrroles; C067635:polypyrrole; D012834:Silver; D012822:Silicon Dioxide