Preparation of raspberry-like polypyrrole composites with applications in catalysis

被引:78
作者
Yao, Tongjie [1 ]
Wang, Chuanxi [1 ]
Wu, Jie [1 ]
Lin, Quan [1 ]
Lv, Hui [1 ]
Zhang, Kai [1 ]
Yu, Kui [2 ]
Yang, Bai [1 ]
机构
[1] Jilin Univ, Coll Chem, State Key Lab Supramol Struct & Mat, Changchun 130012, Peoples R China
[2] Natl Res Council Canada, Steacie Inst Mol Sci, Ottawa, ON K1A 0R6, Canada
关键词
Polypyrrole (PPy); Silver (Ag); SiO2; Composites; Catalysis; SILVER NANOPARTICLES; METAL NANOPARTICLES; SILICA SPHERES; PARTICLES; POLYMERIZATION; NANOCOMPOSITES; NANOREACTOR; LATEXES;
D O I
10.1016/j.jcis.2009.05.001
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
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. (C) 2009 Elsevier Inc. All rights reserved.
引用
收藏
页码:573 / 577
页数:5
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