Journal
CHEMICAL PHYSICS LETTERS
Volume 462, Issue 4-6, Pages 256-259Publisher
ELSEVIER
DOI: 10.1016/j.cplett.2008.07.071
Keywords
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Funding
- Ministerio de Educacion y Ciencia (MEC) [MAT2006-26540-E]
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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. (c) 2008 Elsevier B. V. All rights reserved.
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