Antisolvent precipitation of hydrophobic functionalized multiwall carbon nanotubes in an aqueous environment
Desai, C; Addo Ntim, S; Mitra, S
HERO ID
955029
Reference Type
Journal Article
Year
2012
Language
English
PMID
| HERO ID | 955029 |
|---|---|
| In Press | No |
| Year | 2012 |
| Title | Antisolvent precipitation of hydrophobic functionalized multiwall carbon nanotubes in an aqueous environment |
| Authors | Desai, C; Addo Ntim, S; Mitra, S |
| Journal | Journal of Colloid and Interface Science |
| Volume | 368 |
| Issue | 1 |
| Page Numbers | 115-120 |
| Abstract | The possibility of antisolvent precipitation of hydrophobic, organic soluble functionalized carbon nanotubes (f-CNTs), where water acts as an antisolvent is presented. Octadecylamine functionalized multiwall carbon nanotubes (MWCNT-ODA) was used as the model compound and was found to form highly stable dispersions in different water/solvent systems, and the particle sizes ranged from 170 to 400nm. Colloidal behavior was studied using dynamic light scattering and particle aggregation was found to increase with the addition of electrolytes, with tetrahydrofuran (THF) and ethanol showing the maximum effect. The aggregation behavior of the antisolvent precipitated system did not follow the conventional Derjaguin-Landau-Verwey-Overbeek (DLVO) theory, which was different from what has been reported previously for hydrophilic, water soluble f-CNTs. Based on this study, it is evident that hydrophobic f-CNTs are potential water pollutants. |
| Doi | 10.1016/j.jcis.2011.11.019 |
| Pmid | 22142999 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Language Text | English |
| Is Qa | No |