Pore structure and adsorption properties of single-walled carbon nanohorn bud-like aggregates treated in different atmospheres
2002; Elsevier BV; Volume: 323; Issue: 1-4 Linguagem: Inglês
10.1016/s0921-4526(02)00881-5
ISSN1873-2135
AutoresElena Bekyarova, Katsumi Kaneko, D. Kasuya, Kunimitsu Takahashi, F. Kokai, Masako Yudasaka, Sumio Iijima,
Tópico(s)Fullerene Chemistry and Applications
ResumoAbstract Pore structure changes of single-walled carbon nanohorns (SWNHs) after oxidation with O 2 and CO 2 at different temperatures were studied. Low-temperature N 2 adsorption isotherms were analyzed to evaluate the parameters of both types of porosities present: interparticle pores and intraparticle cavities. Bud -SWNHs, produced by laser ablation of carbon in He atmosphere, have completely closed intraparticles. Oxidation in O 2 at 693 K opens 77% of the closed nanohorns.
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