| Titre : |
Bio-inspired fabrication of superhydrophilic and underwater superoleophobic alumina membranes for highly efficient oil/water separation |
| Type de document : |
texte imprimé |
| Auteurs : |
Wenjin Zhou, Auteur ; Mingyang Zhou, Auteur ; Huapeng Zhang, Auteur ; Hongyan Tang, Auteur |
| Année de publication : |
2021 |
| Article en page(s) : |
p. 361-372 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Alumine
Caractérisation
Essais (technologie)
Essais de résilience
Hydrophilie
Matériaux -- Propriétés antisalissures
Membranes (technologie)
Mouillabilité
Oléophobie
Polyéther imide
Séparation huile/eau
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Inspired by fish scales, superhydrophilic and underwater superoleophobic alumina membranes were fabricated in this study. Dopamine deposited on the surface of alumina membranes through immersion over time, and then crosslinking reaction occurred with polyethyleneimine (PEI), which was confirmed by Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. It induced the modified layer coated on the membrane surface. Values of water contact angle of the modified alumina membranes were ~ 0° in air. Values of underwater oil contact angle reached 155°, which indicated it was superhydrophilic and underwater superoleophobic. More particles engendered with the increase in the reaction time with PEI, which induced the decrease in the pore sizes and permeation flux. All values of oil rejection were higher than 98.5%. No obvious deterioration of permeation flux could be found. The rejection hardly suffered a sharp decline over 800 min. It indicates that the modified layer can firmly stick to the alumina membranes. Therefore, the as-prepared alumina membrane is promising for practical oil/water separation. |
| Note de contenu : |
- MATERIALS AND METHODS : Materials and chemicals - Modification of alumina membranes - Characterization and measurement - Abrasion experiment - Separation experiments
- RESULTS AND DISCUSSION : Surface morphology of the membranes - Chemical composition on the surface - Surface wettability - Separation performance - Antifouling property of the modified membranes
- Table 1 : The modification parameters of the asprepared alumina membranes |
| DOI : |
https://doi.org/10.1007/s11998-020-00406-4 |
| En ligne : |
https://link.springer.com/content/pdf/10.1007/s11998-020-00406-4.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35600 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 18, N° 2 (03/2021) . - p. 361-372
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