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Title: | Discriminating the carboxylic groups from the total acidic sites in oxidized multi-wall carbon nanotubes by means of acid–base titration |
Authors: | González-Guerrero, Ana Belén CSIC ORCID; Mendoza Gómez, Ernest CSIC ORCID; Pellicer, Eva CSIC ORCID; Alzina, Francesc CSIC ORCID; Fernández Sánchez, César CSIC ORCID ; Lechuga, Laura M. CSIC ORCID | Issue Date: | 10-Sep-2008 | Publisher: | Elsevier | Citation: | Chemical Physics Letters 462(4-6): 256-259 (2008) | Abstract: | 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. | Description: | 4 páginas, 4 figuras. | Publisher version (URL): | http://dx.doi.org/10.1016/j.cplett.2008.07.071 | URI: | http://hdl.handle.net/10261/31370 | DOI: | 10.1016/j.cplett.2008.07.071 | ISSN: | 0009-2614 |
Appears in Collections: | (IMB-CNM) Artículos (CIN2) Artículos |
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