Synthesis and properties of carbon nanospheres grown by CVD using Kaolin supported transition metal catalysts

被引：144

作者：

Miao, JY

Hwang, DW

Narasimhulu, KV

Lin, PI

Chen, YT

Lin, SH

Hwang, LP

机构：

[1] Acad Sinica, Inst Atom & Mol Sci, Taipei 10617, Taiwan

[2] Natl Taiwan Univ, Dept Chem, Taipei 10617, Taiwan

来源：

CARBON | 2004年 / 42卷 / 04期

关键词：

catalytically grown carbon; vapor grown carbon; catalyst support; chemical vapor deposition; electron microscopy; electron spin resonance; Raman spectroscopy; magnetic properties;

D O I：

10.1016/j.carbon.2004.01.053

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：

Carbon spheres with diameters between 400 and 2000 nm were synthesized in large quantities by catalytic chemical vapor deposition (CCVD) method using Kaolin supported transition metal salts (M = Fe, Co, Ni, etc.) as catalysts. The reaction conditions for the synthesis of carbon spheres in different sizes are described. The reactivity of the carbon spheres in various organic solvents is discussed. The as-synthesized carbon spheres are composed of unclosed graphene layers with the interlayer distances 0.33-0.35 nm. These carbon spheres have been characterized by SEM, TEM, HRTEM, XRD, Raman, ESR and SQUID magnetization techniques. From the ESR and SQUID the metallic nature of the carbon spheres is described. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：813 / 822

页数：10

共 57 条

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