期刊
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
卷 170, 期 1-3, 页码 51-57出版社
ELSEVIER
DOI: 10.1016/j.mseb.2010.02.025
关键词
Fe3O4; Carbon; Shape-controlled synthesis; Transmission electron microscope; Raman spectrum; Magnetic property
资金
- 973 project of China [200503623601]
- Natural Science Fund of university in Jiangsu [09KJD430006]
- Jiangsu University of Science and Technology [35060810]
A shape-controlled synthesis of carbon-encapsulated Fe3O4 core/shell (Fe3O4@C) composites is reported in this paper. By tuning the reaction temperature from 500 degrees C to 700 degrees C and the amount of ammonium acid carbonate (1.0 g, 0.5 g and 2.0 g) in a sealed reaction system, Fe3O4@C composites with hexapod-like, flake-like, and chain-like morphologies have been successfully obtained using ferrocene as the precursor. Corresponding hollow carbon structures can be obtained by acid treatments. The three kinds of Fe3O4@C composites show ferromagnetic properties at room temperature, while their saturation magnetizations and coercivities are obviously different from each other, due to the various shapes and structures. Possible formation processes of these Fe3O4@C composites and corresponding hollow carbon materials are discussed. The experimental results indicate that the reaction temperature and the amount of ammonium acid carbonate play key roles in the shape-controlled synthesis of hexapod-like, flake-like and chain-like Fe3O4@C composites. (C) 2010 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据