Non-covalent interaction of benzonitrile with single-walled carbon nanotubes

Autor(es)

Ferreira, Odair P. ^[1] ; Otubo, Larissa ^[1] ; Aguiar, Acrisio L. ^[2] ; Silva, Jose J. A. ^[2] ; Mendes Filho, Josue ^[2] ; Souza Filho, Antonio G. ^{[2, 1]} ; Fagan, Solange B. ^[3] ; Alves, Oswaldo L. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Univ Estadual Campinas, LQES, Inst Quim, BR-13083970 Campinas, SP - Brazil

^[2] Univ Fed Ceara, Dept Fis, BR-60455900 Fortaleza, Ceara - Brazil

^[3] UNIFRA, Ctr Univ Franciscano, Area Ciencias Nat & Tecnol, BR-97010032 Santa Maria, RS - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF NANOPARTICLE RESEARCH; v. 11, n. 8, p. 2163-2170, NOV 2009.
• Citações Web of Science: 3

Resumo

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 pi-pi interaction instead of through the free electron pair of the nitrile. (AU)

• Processo FAPESP: 08/58194-7 - Antonio Gomes de Souza Filho | Universidade Federal do Ceará/UFC - Brasil
• Beneficiário: Oswaldo Luiz Alves
• Modalidade de apoio: Auxílio à Pesquisa - Pesquisador Visitante - Brasil