Preparation of a copper ion selective membrane by surface-modified molecular imprinting / Huining Deng in Industrial & engineering chemistry research, Vol. 51 N° 43 (Octobre 2012)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 51 N° 43 (Octobre 2012) . - pp. 14018–14025 Titre : Preparation of a copper ion selective membrane by surface-modified molecular imprinting Type de document : texte imprimé Auteurs : Huining Deng, Auteur ; Liya Gao, Auteur ; Shaofeng Zhang, Auteur Année de publication : 2013 Article en page(s) : pp. 14018–14025 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Copper ion membrane Résumé : A novel copper ion-selective membrane was prepared by pressure-driven depositing poly(ethyleneimine) (PEI) onto the surface of a polyacrylonitrile (PAN) ultrafiltration (UF) membrane and was subsequently modified with molecular imprinting technique. Examination by infrared spectroscopy and scanning electron microscopy (SEM) confirmed PEI was successfully introduced onto the surface of a hydrolyzed PAN UF membrane. The increase of the pH of copper ion solution was beneficial to the template ion adsorption on the PEI deposited PAN (PEI-PAN) membrane. In ion imprinting, with the cross-linking time prolonged, the adsorption selectivity of the ion imprinted membrane (IIM) increased. The results of binding experiment fitted well with the Langmuir model and showed that the Cu2+ imprinted membrane has the ability of specificity and recognition toward the imprinted copper ion. The imprinting factor calculated from the separation factor was 2.25, indicating that the surface imprinting process facilitated the perm-selectivity of the membrane. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie202972j [article] Preparation of a copper ion selective membrane by surface-modified molecular imprinting [texte imprimé] / Huining Deng, Auteur ; Liya Gao, Auteur ; Shaofeng Zhang, Auteur . - 2013 . - pp. 14018–14025. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 43 (Octobre 2012) . - pp. 14018–14025 Mots-clés : Copper ion membrane Résumé : A novel copper ion-selective membrane was prepared by pressure-driven depositing poly(ethyleneimine) (PEI) onto the surface of a polyacrylonitrile (PAN) ultrafiltration (UF) membrane and was subsequently modified with molecular imprinting technique. Examination by infrared spectroscopy and scanning electron microscopy (SEM) confirmed PEI was successfully introduced onto the surface of a hydrolyzed PAN UF membrane. The increase of the pH of copper ion solution was beneficial to the template ion adsorption on the PEI deposited PAN (PEI-PAN) membrane. In ion imprinting, with the cross-linking time prolonged, the adsorption selectivity of the ion imprinted membrane (IIM) increased. The results of binding experiment fitted well with the Langmuir model and showed that the Cu2+ imprinted membrane has the ability of specificity and recognition toward the imprinted copper ion. The imprinting factor calculated from the separation factor was 2.25, indicating that the surface imprinting process facilitated the perm-selectivity of the membrane. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie202972j

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