Discriminating the carboxylic groups from the total acidic sites in oxidized multi-wall carbon nanotubes by means of acid–base titration
作者： Ana Belén González-Guerrero , Ernest Mendoza , Eva Pellicer , Francesc Alsina , César Fernández-Sánchez
DOI: 10.1016/J.CPLETT.2008.07.071
关键词: Carbon nanotube 、 Acid treatment 、 Acid–base titration 、 Titration 、 Raman spectroscopy 、 Organic chemistry 、 Chemistry 、 Quantitative determination 、 Inorganic chemistry
摘要: Abstract This work reports on the quantitative determination of carboxylic groups created upon HNO 3 treatment at multi-wall carbon nanotube (MWCNT) surface. To this purpose, MWCNTs have been oxidized by refluxing in acid for different periods time (from 1 h to 12 h). The main goal present study comprises development a simple analytical methodology based Boehm’s titration that enables rapid estimation total and their discrimination from sites MWCNT surface as result treatment. trends observed are correlated with Raman spectroscopy analyses.
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