Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/29705
Título: | The solvent effect on the sidewall functionalization of multi-walled carbon nanotubes with maleic anhydride |
Autor(es): | Araújo, Rui Filipe Proença, M. Fernanda R. P. Silva, Carlos J. R. Paiva, M. C. Villar-Rodil, Silvia Tascón, Juan Manuel D. |
Palavras-chave: | Carbon nanotube Functionalization Maleic anhydride |
Data: | 16-Jul-2014 |
Editora: | Elsevier 1 |
Revista: | Carbon |
Citação: | 10.1016/j.carbon.2014.07.019 |
Resumo(s): | The Diels-Alder cycloaddition of maleic anhydride to multi-walled carbon nanotubes (MWCNT) was performed in dimethyl sulfoxide (DMSO) (190°C, 24 h) and in 2-chorotoluene (150°C, 48 h). The functionalized MWCNT were characterized by thermogravimetry, elemental analysis, X-ray photoelectron spectroscopy, and potentiometric titration allowing a clear perception of the solvent involvement on the functionalization reaction. The MWCNT functionalized in DMSO presented acidity arising mostly from reaction with the solvent. The MWCNT modified in 2-chlorotoluene did not evidence chemical transformations that could be assigned to the solvent alone. The cycloaddition of maleic anhydride to anthracene, used as model compound for the MWCNT surface, confirmed that the reaction was fast in DMSO. Hydrolysis of the anhydride was catalysed by the MWCNT presence, but the cyclic anhydride structure was restored upon heating in this solvent at 185 °C. The work also confirmed the cycloaddition of maleic anhydride to CNT and DMSO was identified as the best solvent for the reaction, at 190 °C |
Tipo: | Artigo |
Descrição: | "Accepted manuscript". Available online 16 July 2014 |
URI: | https://hdl.handle.net/1822/29705 |
DOI: | 10.1016/j.carbon.2014.07.019 |
ISSN: | 0008-6223 |
Versão da editora: | http://www.sciencedirect.com/science/article/pii/S000862231400654X |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | IPC - Artigos em revistas científicas internacionais com arbitragem |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Carbon 2014_Func MA.pdf Acesso restrito! | versão aceite p/publicação | 469,51 kB | Adobe PDF | Ver/Abrir |