| Titre : |
Methyltrichlorosilane functionalized silica nanoparticles-treated superhydrophobic cotton for oil–water separation |
| Type de document : |
texte imprimé |
| Auteurs : |
Love Dashairya, Auteur ; Dibya Darshan Barik, Auteur ; Partha Saha, Auteur |
| Année de publication : |
2019 |
| Article en page(s) : |
p. 1021-1032 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Absorption
Angle de contact
CotonLe coton est une fibre végétale qui entoure les graines des cotonniers "véritables"(Gossypium sp.), un arbuste de la famille des Malvacées. Cette fibre est généralement transformée en fil qui est tissé pour fabriquer des tissus. Le coton est la plus importante des fibres naturelles produites dans le monde. Depuis le XIXe siècle, il constitue, grâce aux progrès de l'industrialisation et de l'agronomie, la première fibre textile du monde (près de la moitié de la consommation mondiale de fibres textiles).
Dioxyde de silicium
Hydrophobie
Méthyltrichlorosilane
Nanoparticules
Surfaces fonctionnelles
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Water pollution due to oil spills has become a significant concern in recent times for the marine ecosystem. The use of oleophilic/hydrophobic sorbents for oil–water separation has gained a lot of attention as an economical and environment-friendly solution. Herein, we developed a superhydrophobic/superoleophilic cotton by silica nanoparticles (~ 800 nm) treatment followed by surface functionalization with methyltrichlorosilane (MTCS). X-ray diffraction, field emission scanning electron microscopy, energy-dispersive X-ray spectroscopy, and Fourier-transform infrared spectroscopy studies reveal that the formation of pseudo-amorphous SiO2 NPs and a C–Si–O coverage on cotton fiber render it superhydrophobic with increased surface roughness. The MTCS/SiO2-treated cotton exhibited contact angles of ~ 173 ± 2° and 0° on the water–cotton and oil–cotton interface, respectively. Moreover, the MTCS/SiO2-treated cotton demonstrated superhydrophobicity over the entire pH range, with excellent absorption capacities for various oil–water mixtures ranging from ~ 30 to 40 times its weight. |
| Note de contenu : |
- EXPERIMENTAL : Materials - Pretreatment of cotton - Preparation of SiO2 NPs-treated cotton - Preparation of MTCS/SiO2-treated cotton - Absorption capacity - Material characterizations
- RESULTS AND DISCUSSION : Reaction mechanisms - Microstructural analysis - Phase and structural analysis - Superhydrophobicity and wettability - Selectivity tests - Oil/water separation tests - Reusability of MTCS/SiO2-treated cotton - Absorption kinetics for sorption mechanism |
| DOI : |
10.1007/s11998-018-00177-z |
| En ligne : |
https://link.springer.com/content/pdf/10.1007%2Fs11998-018-00177-z.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32858 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 16, N° 4 (07/2019) . - p. 1021-1032
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