Characterization of single wall carbon nanotubes by nonane preadsorption
نویسندگان
چکیده
The preferential blocking of the interior adsorption sites of single walled carbon nanotubes (SWNTs) by n-nonane is demonstrated. Following adsorption of n-nonane and evacuation for 24 h at 323 K, it was found that interior sites with diameters less than 14 Å remained filled with n-nonane, blocking the physical adsorption of N2 on these sites at 77.3 K. We demonstrate that ‘‘nonane blocking’’ is a very useful technique for nanotube porosity characterization. 2006 Elsevier Ltd. All rights reserved.
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