Ferreira, Odair P. and Otubo, Larissa and Aguiar, Acrisio L. and Silva, Jose J. A. and Mendes Filho, Josue and Souza Filho, Antonio G. and Fagan, Solange B. and Alves, Oswaldo L. (2009) Non-covalent interaction of benzonitrile with single-walled carbon nanotubes. Journal of Nanoparticle Research, 11 (8). pp. 2163-2170.
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We have studied the interaction of benzonitrile with as-prepared and purified single-walled carbon nanotubes (SWCNTs). As-prepared SWCNTs, when suspended in benzonitrile, lead to a red colored dispersion which contains fragments composed mostly of amorphous carbon and carbon-coated catalyst, thus suggesting that benzonitrile is a solvent that can be used as one step of the purification process. Optical spectroscopic data (infrared, Raman, absorption) showed that purified carbon nanotubes interact weakly with benzonitrile. These experimental results are confirmed by first principles calculations that predict a very weak adsorption process through π–π interaction instead of through the free electron pair of the nitrile.
|Uncontrolled Keywords:||Carbon nanotubes - Carbon nanoparticles - Purification process|
|Subjects:||Material Science > Nanochemistry|
|Deposited On:||08 Jan 2010 11:58|
|Last Modified:||08 Jan 2010 11:58|
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