Growth of magnetic carbon with a nanoporous and graphitic structure

被引：20

作者：

Sheng, Zhao Min ^{[2
]}

Wang, Jian Nong ^{[1
]}

机构：

[1] Tongji Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Adv Civil Engn Mat,Shanghai Key Lab Mat F, Shanghai 200092, Peoples R China

[2] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai Key Lab Laser Proc & Mat Modificat, Shanghai 200240, Peoples R China

来源：

CARBON | 2009年 / 47卷 / 14期

基金：

中国国家自然科学基金;

关键词：

SILICA; NANOPARTICLES; SUPERLATTICES; NANOCRYSTALS; FABRICATION; PYROLYSIS; NANOTUBES; COMPOSITE; SPHERES; SYSTEM;

D O I：

10.1016/j.carbon.2009.07.043

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：

A porous magnetic composite is synthesized in which each magnetic nanoparticle is closely encapsulated by several graphitic layers and the resulting units are embedded in a carbon matrix with a nanoporous and graphitic structure. The experiments involve preparation of an iron-containing carbon precursor by thermal pyrolysis and subsequent heat treatment of the precursor. Both magnetic particles and porous carbon with a graphitic structure are formed at the same time. After the heat treatment, no additional treatment is needed. The prepared sample has a high surface area of 275-395 m(2) g(-1), a high saturation magnetism of 43-65 emu g(-1) and a high coercivity of 370-650 Oe. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：3271 / 3279

页数：9

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