title: One Step Preparation of Reduced Graphene Oxide/Pd-Fe3 O4 @Polypyrrole Composites and Their Application in Catalysis.
abstract: The simple preparation of catalysts with superior catalytic activity and good reusability is highly desirable. Herein, we report a novel strategy to construct reduced graphene oxide (rGO)/Pd-Fe3 O4 @polypyrrole (PPy) catalysts with Pd and Fe3 O4 nanoparticles anchored on a rGO nanosheet surface and wrapped in a PPy shell. The synthesis and assembly of both the Pd and Fe3 O4 nanoparticles, the preparation of the PPy layer, and the reduction of graphene oxide nanosheets were finished in one step. In the system, the PPy layer not only prevented aggregation of Pd and Fe3 O4 nanoparticles, but also generated a synergistic effect with precursor Pd(2+) ions, which led to a high dispersity of as-prepared Pd nanoparticles. Although the procedure was simplified to one step, the catalytic activity and reusability were not sacrificed. In the reduction of 4-nitrophenol, their catalytic performance was better than that in recent reports. Moreover, the catalysts showed good reusability owing to their magnetic properties.
authors.affiliation: The Academy of Fundamental and Interdisciplinary Science, Harbin Institute of Technology, Harbin, Heilongjiang, 150080, P.R. China.
authors.forename: Tongjie
authors.initials: T
authors.lastname: Yao
authors.affiliation: The Academy of Fundamental and Interdisciplinary Science, Harbin Institute of Technology, Harbin, Heilongjiang, 150080, P.R. China.
authors.forename: Hao
authors.initials: H
authors.lastname: Wang
authors.affiliation: The Academy of Fundamental and Interdisciplinary Science, Harbin Institute of Technology, Harbin, Heilongjiang, 150080, P.R. China.
authors.forename: Quan
authors.initials: Q
authors.lastname: Zuo
authors.affiliation: Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin, 150080, P.R. China.
authors.forename: Jie
authors.initials: J
authors.lastname: Wu
authors.affiliation: The Academy of Fundamental and Interdisciplinary Science, Harbin Institute of Technology, Harbin, Heilongjiang, 150080, P.R. China.
authors.forename: Xiao
authors.initials: X
authors.lastname: Zhang
authors.affiliation: The Academy of Fundamental and Interdisciplinary Science, Harbin Institute of Technology, Harbin, Heilongjiang, 150080, P.R. China.
authors.forename: Fang
authors.initials: F
authors.lastname: Cui
authors.affiliation: The Academy of Fundamental and Interdisciplinary Science, Harbin Institute of Technology, Harbin, Heilongjiang, 150080, P.R. China. cuit@hit.edu.cn.
authors.forename: Tieyu
authors.initials: T
authors.lastname: Cui
keywords: graphene; heterogeneous catalysis; magnetic properties; nanoparticles; palladium