Titre : |
Preparation of carboxylated graphene oxide nanosheets/polysulphone hollow fibre separation membranes with improved separation and dye adsorption properties |
Type de document : |
texte imprimé |
Auteurs : |
Wenying Shi, Auteur ; Xianhua Zeng, Auteur ; Li Hongbin, Auteur ; Rong Zhou, Auteur ; Hai-Xia Zhang, Auteur |
Année de publication : |
2019 |
Article en page(s) : |
p. 370-382 |
Note générale : |
Bibliogr. |
Langues : |
Anglais (eng) |
Catégories : |
Adsorption Caractérisation Carboxylation Colorants -- Adsorption Fibres creuses Filature à sec Filature au mouilléProcédé dans lequel une solution de substance fibrogène est extrudée dans un milieu liquide de coagulation où le polymère est régénéré, comme dans la fabrication de la viscose ou de la rayonne cuproammoniacale. Membranes (technologie) Morphologie (matériaux) Nanoparticules Oxyde de graphène Polysulfones Séparation (technologie)
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Index. décimale : |
677.6 Tissus obtenus par des procédés spéciaux, quelle que soit leur composition : jacquard, feutres tissés et non tissés, tapisseries, tissus ajourés |
Résumé : |
Novel hollow fibre polysulphone (PSF) separation membranes were prepared via the incorporation of carboxylated graphene oxide (cGO) in membrane matrix during the dry‐wet spinning process to improve the membrane performance of water flux and dye adsorption. The surface composition and morphology of the prepared cGO‐incorporated hollow fibre membranes were characterised by means of Fourier Transform–infrared spectra and scanning electron microscopy. The effects of different cGO contents on membrane surface hydrophilicity, separation performance, anti‐compaction and adsorption properties were investigated through measurements of the water contact angle, cross‐flow filtration and methylene blue (MB) adsorption experiments. The results demonstrated that the cGO‐incorporated membranes had more hydrophilic surfaces, higher permeation flux, better anti‐compaction properties and a higher adsorption rate of MB than that of the PSF control membrane. When cGO content was 0.45 wt.%, the pure water flux of the modified membrane increased from 90.56 to 148.26 l m−2 h−1 at 0.1 MPa; also, rejections of bovine serum albumin and polyethylene glycol (PEG‐20000) maintained relatively high values of 98.81 and 93.89%, respectively. The incorporation of cGO nanosheets could effectively improve membrane anti‐compaction properties and the adsorption rate of MB. |
Note de contenu : |
- EXPERIMENTAL : Materials - Preparation of hollow fibre membranes - Characterisation of PSF support membrane
- RESULTS AND DISCUSSION : Chemical compositions of the membrane surface - Morphology of cGO nanosheets - Surface morphology of different membranes - Water flux of different membranes - Separation performance of different membranes - The anti-compaction of different membranes - Stability of membrane separation performance - Adsorption properties of different membranes |
DOI : |
10.1111/cote.12423 |
En ligne : |
https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12423 |
Format de la ressource électronique : |
Pdf |
Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33069 |
in COLORATION TECHNOLOGY > Vol. 135, N° 5 (10/2019) . - p. 370-382