期刊
PHYSICA B-CONDENSED MATTER
卷 323, 期 1-4, 页码 143-145出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0921-4526(02)00881-5
关键词
carbon nanohorns; adsorption; porosity
Pore structure changes of single-walled carbon nanohorns (SWNHs) after oxidation with O-2 and CO2 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. (C) 2002 Elsevier Science B.V. All rights reserved.
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