Synthesis and characterization of amorphous hollow carbon spheres |
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Authors: | Guangmin Yang Qiang Xu Weitao Zheng |
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Affiliation: | (1) College of Physics, Changchun Normal University, Changchun, 130032, Jilin Province, People’s Republic of China;(2) Changchun Institute of Technology, Changchun, 130021, People’s Republic of China;(3) Department of Materials Science, Key Laboratory of Mobile Materials, MOE, and State Key Laboratory of Superhard Materials, Jilin University, Changchun, 130012, People’s Republic of China; |
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Abstract: | Nanostructured carbon materials have attracted enormous attention in last two decades due to their unique chemical, electrical,
and mechanical properties. In this work, amorphous hollow carbon spheres (AHCSs) with diameters in the range of 100–750 nm,
which are dispersed among bent graphitized carbon nanotubes, are synthesized by using radio frequency plasma enhanced chemical
vapor deposition in mixed CH4/H2 gases. The carbon spheres were characterized with scanning electron microscope, energy-dispersive X-ray spectroscopy, Raman
spectroscopy, and transmission electron microscopy. It is found that MgO and Co/Ni nanoparticles as well as hydrogen play
crucial roles in the formation of AHCSs. Moreover, a possible growth mechanism of AHCSs was proposed. The results of this
study provide new insights into the fundamental understanding of nonstructural carbon materials toward applications in nanodevices. |
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