期刊
MATERIALS LETTERS
卷 62, 期 4-5, 页码 581-583出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2007.06.005
关键词
carbon spheres; chemical vapor deposition; electron microscopy
Simultaneous production of microsize hollow and solid carbon spheres has been successfully achieved via non-catalytic chemical vapor deposition of acetylene under mild conditions, of which the unique feature is that the as-made ball-like carbons can be collected separately as two individual products. The parameters such as the reaction temperature, the flow rate and the composition of the carrier gas especially H-2 are found to be critical for the selective synthesis of microsize hollow and solid carbon spheres. A possible growth model for these ball-like carbon products is proposed and discussed in terms of the process parameters. (c) 2007 Elsevier B.V. All rights reserved.
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