Journal
JOURNAL OF SOLID STATE CHEMISTRY
Volume 181, Issue 10, Pages 2796-2803Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jssc.2008.07.012
Keywords
Carbon nanoparticles; Laser pyrolysis; Raman spectroscopy; Electron microscopy
Funding
- Ministry of Science and Education through the Department of Chemistry, Warsaw University [N204 096 31/2160]
- DFG [RU 1540/1-1, PI 440/4]
- Foundation for Polish Science (FNP)
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Carbon nanospheres with diameters between 100 and 400 nm have been Successfully synthesized via low-power laser-assisted pyrolysis of anthracene in a nitrogen atmosphere. The developed facile route yields homogeneous nanoparticles and requires no supplementary carbon feedstock or catalyst. The sharp thermal gradient afforded by the laser results in two kinds of carbon products that differ in crystallinity and mean particle size. Our detailed findings point to the carbon nanospheres being comprised of small-unclosed aromatic layers that are connected together by simple organic linkers. C-H bonds in the anthracene Molecules are partially broken by the laser beam energy, and as the newly created large radicals aggregate, carbon nanospheres are formed. (C) 2008 Elsevier Inc. All rights reserved.
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