148008 20250110163829.0 doi 10.1016/j.memsci.2022.120490 sideral 128725 ART-2022-128725 eng Berned-Samatán, V. Universidad de Zaragoza Single-walled carbon nanotube buckypaper as support for highly permeable double layer polyamide/zeolitic imidazolate framework in nanofiltration processes 2022 The development of membranes for nanofiltration applications requires not only selective layers but also suitable supports to control their synthesis as well as to enable efficient and competitive membrane performances. Single-walled carbon nanotube free-standing films (denoted as buckypaper) have been used as supports for the preparation of polyamide (PA) layers by interfacial polymerization (IP) and tested for dead-end nanofiltration for dyes removal (265–1017 Da) from water and organic solvents. The arrangement of the phases during the IP is essential, thus impregnation on the buckypaper support, first with the organic phase and then with the aqueous phase (denoted as inverse IP, iIP) leads to permeances (of up to 28.0 and 31.4 L m-2 h-1 bar-1 for water and methanol, respectively) and rejection values (>96%) that exceed those of the membranes prepared by reversing the impregnation order. Secondly, a double layer PA/zeolitic imidazolate framework (ZIF-8 or ZIF-93) was prepared on the buckypaper (bp). The design of this double layer led to superior membrane performance, in particular for the hydrophilic ZIF-93, as it changes the PA layer properties (increasing both hydrophilicity and surface roughness) providing higher permeances (up to 59.3 and 76.0 L m-2 h-1 bar-1 for water and methanol, respectively) and dye rejections (>98.5%) than the bare PA layer prepared by iIP. This attractive performance of the PA/ZIF-93/bp membrane has been corroborated with experiments in cross-flow nanofiltration and dead-end nanofiltration of aqueous salt solutions, long-term stability nanofiltration and the study the membrane separation performance after a chlorine treatment. The results reported here therefore show the enormous potential of these membrane architectures for a variety of selective separation processes. © 2022 The Authors Access copy available to the general public Unrestricted info:eu-repo/grantAgreement/ES/DGA/E25-20R info:eu-repo/grantAgreement/ES/DGA-FSE/T43-20R info:eu-repo/grantAgreement/ES/DGA/T03-20R info:eu-repo/grantAgreement/ES/MCIN-AEI/PID2019-104009RB-I00-AEI-10.13039-501100011033 info:eu-repo/grantAgreement/ES/MICINN-AEI/PID2019-104272RB-C51/AEI/10.13039/501100011033 info:eu-repo/grantAgreement/ES/MICINN/BES-2017-080209 info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 9.5 2022 POLYMER SCIENCE 4 / 85 = 0.047 2022 Q1 T1 ENGINEERING, CHEMICAL 11 / 141 = 0.078 2022 Q1 T1 1.91 2022 Biochemistry 2022 Q1 Physical and Theoretical Chemistry 2022 Q1 Materials Science (miscellaneous) 2022 Q1 Filtration and Separation 2022 Q1 16.5 2022 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Rubio, C. Galán-González, A. Muñoz, E. Benito, A. M. (orcid)0000-0002-8654-7386 Maser, W. K. Coronas, J. Universidad de Zaragoza (orcid)0000-0003-1512-4500 Téllez, C. Universidad de Zaragoza (orcid)0000-0002-4954-1188 5005 555 Universidad de Zaragoza Dpto. Ing.Quím.Tecnol.Med.Amb. Área Ingeniería Química 652 (2022), 120490 [10 pp.] J. membr. sci. JOURNAL OF MEMBRANE SCIENCE 0376-7388 5279126 http://zaguan.unizar.es/record/148008/files/texto_completo.pdf Versión publicada 2521764 http://zaguan.unizar.es/record/148008/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:148008 articulos driver 2025-01-10-14:25:06 ARTICLE