α-Fe2O3/PPy/Ag functional hybrid nanomaterials with core/shell structure: Synthesis, characterization and catalytic activity

被引：22
作者：
Zhang, Xia [1 ]
Zhi, Wen-xiu [1 ]
Yan, Bo [1 ]
Xu, Xin-xin [1 ]
机构：
[1] Northeastern Univ, Dept Chem, Coll Sci, Shenyang 110004, Liaoning, Peoples R China
来源：
POWDER TECHNOLOGY | 2012年 / 221卷
基金：
中国国家自然科学基金;
关键词：
Fe2O3/PPy/Ag nanocomposite; Core/shell structure; Electrochemical property; Catalytic activity; NANOCOMPOSITES; NANOPARTICLES; NANOSTRUCTURES; FABRICATION; DEPOSITION; REDUCTION; PARTICLES; CAPSULES; STORAGE;
D O I：
10.1016/j.powtec.2011.12.064
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Nanocomposites with core/shell structure composed of hematite (alpha-Fe2O3), polypyrrole (PPy) and silver have been successfully synthesized with a three-step reaction process. First, semispherical cores of alpha-Fe2O3 were prepared by the forced hydrolysis of FeCl3. Next, pyrrole was polymerized in the suspension of alpha-Fe2O3 and then composite carrier with alpha-Fe2O3 as core and PPy as shell was produced. Last, a surface reduction-oxidation was carried out between PPy and silver nitrate so as to produce alpha-Fe2O3/PPy/Ag nanocomposites. The as-prepared nanoparticles were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy and cyclic voltammogram (CV), furthermore, the effects of reaction conditions on the morphology of nanocomposites were studied in detail. The alpha-Fe2O3/PPy/Ag nanocomposites exhibit excellent electrochemical activity and chemical catalytic properties in the reduction reaction of m-nitrobenzene sulfonic sodium (m-NBS) at room temperature. To our knowledge, the alpha-Fe2O3/PPy/Ag nanocomposites have not been reported. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：177 / 182
页数：6
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