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Adsorption of polyaromatic hydrocarbons on single wall carbon nanotubes of different functionalities and diameters

2007; Elsevier BV; Volume: 314; Issue: 1 Linguagem: Inglês

10.1016/j.jcis.2007.04.080

1095-7103

Suzana Gotovac Atlagić, Cheol‐Min Yang, Yoshiyuki Hattori, Kunimitsu Takahashi, Hirofumi Kanoh, Katsumi Kaneko,

Advanced Physical and Chemical Molecular Interactions

Adsorption from toluene solution of phenanthrene and tetracene on single wall carbon nanotubes (SWCNT) is measured. Comparison of adsorbents such as laser ablation and HipCO samples reveals multiple factors influencing the adsorption mechanism. Acid functionalized carbon nanotubes have shown markedly increased adsorbability for the polyaromatic molecules. The linear tetracene molecule's adsorption is more promoted on nanotubes with increasing diameter, but also additionally with presence of the carboxylic groups. The adsorption mechanisms on carboxylic sites and on the bold, non-functionalized large-diameter nanotubes are suggested and supported by detailed characterization of the SWCNTs applied.