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Título : Discriminating the carboxylic groups from the total acidic sites in oxidized multi-wall carbon nanotubes by means of acid–base titration
Autor : González-Guerrero, Ana Belén, Mendoza Gómez, Ernest, Pellicer, Eva, Alsina, Francesc, Fernández Sánchez, César, Lechuga, Laura M.
Fecha de publicación : 10-Sep-2008
Editor: Elsevier
Resumen: This work reports on the quantitative determination of the carboxylic groups created upon HNO3 treatment at multi-wall carbon nanotube (MWCNT) surface. To this purpose, MWCNTs have been oxidized by refluxing in acid for different periods of time (from 1 h to 12 h). The main goal of the present study comprises the development of a simple analytical methodology based on Boehm’s titration that enables the rapid estimation of the total carboxylic groups and their discrimination from the total oxidized sites created at MWCNT surface as a result of the acid treatment. The trends observed are correlated with Raman spectroscopy analyses.
Descripción : 4 páginas, 4 figuras.
Versión del editor:
ISSN: 0009-2614
DOI: 10.1016/j.cplett.2008.07.071
Citación : Chemical Physics Letters 462(4-6): 256-259 (2008)
Appears in Collections:(IMB-CNM) Artículos
(CIN2) Artículos

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