Oxidative treatment, dispersion effect, and simulation of multi-walled carbon nanotubes in aqueous solution
- Authors: Song K.1, Guo L.2, Chen H.1
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Affiliations:
- School of Life Science
- Key Laboratory of Grain and Oil Processing of Jilin Province
- Issue: Vol 91, No 1 (2017)
- Pages: 145-149
- Section: Physical Chemistry of Nanoclusters and Nanomaterials
- URL: https://journals.rcsi.science/0036-0244/article/view/169199
- DOI: https://doi.org/10.1134/S0036024417010101
- ID: 169199
Cite item
Abstract
In the present work, the multi-walled carbon nanotubes (MWCNTs) were modified by the treatment with concentrated nitric and sulfuric acid mixture (3: 1 vol/vol). The obtained material was characterized by X-ray diffraction (XRD). The effect of two surfactants, methylcellulose (MC) and cetyltrimethylammonium bromide (CTAB) on dispersing of MWCNTs in aqueous solution was monitored by UV–Vis spectroscopy and transmission electron microscopy (TEM). Also, the dispersing effect of the surfactants was simulated by three-dimensional Monte Carlo method. The results showed that the oxidative treatment leads to purification of the neat MWCNTs, and directly improved their dispersing. The mixture containing both MC and CTAB surfactants has better dispersing effect than individual surfactants. The optimum concentration ratio of MC, CTAB, and MWCNTs was 2: 3: 1. In the simulation model, MWCNTs were dispersed randomly. The simulation results may be helpful for the further research on mechanical and electrical properties of composites reinforced with MWCNTs.
About the authors
Kai Song
School of Life Science
Author for correspondence.
Email: ksongcc@tom.com
China, Changchun, 130032
Li-Quan Guo
Key Laboratory of Grain and Oil Processing of Jilin Province
Email: ksongcc@tom.com
China, Changchun, 130507
Hui Chen
School of Life Science
Email: ksongcc@tom.com
China, Changchun, 130032