MORPHOLOGY, STRUCTURE, AND GROWTH OF NANOPARTICLES PRODUCED IN A CARBON-ARC

被引:169
作者
SCOTT, JHJ
MAJETICH, SA
机构
[1] Department of Physics, Carnegie Mellon University, Pittsburgh
来源
PHYSICAL REVIEW B | 1995年 / 52卷 / 17期
关键词
D O I
10.1103/PhysRevB.52.12564
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The morphology and crystalline microstructure of carbon-encapsulated nanoparticles produced in a Huffman-Kratschmer fullerene reactor are studied systematically as a function of location within the reactor. X-ray powder diffraction and high-resolution transmission electron microscopy are used to characterize powder harvested from the reactor walls and the inner and outer cores of the cathode deposit. We observe increased graphitization and crystallinity, more faceting, and more gaps between the nanoparticle and the encapsulating carbon cages in the cathode deposit when compared to the wall powder. We propose a growth model based on gas-phase nucleation to explain these observations, Linking carbon are nanoparticle synthesis to existing work on gas aggregation cluster sources.
引用
收藏
页码:12564 / 12571
页数:8
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