Nanofiltration with polyamide thin film composite membrane with ZIF-93/SWCNT intermediate layers on polyimide support

Among current separation processes, nanofiltration (NF), besides its easy scalability, exhibits low energy consumption, environmental impact and footprint, being widely used for water treatment and solvent recovery. The development of membranes for NF involves perfecting the skin selective layer, th...

Descripción completa

Detalles Bibliográficos
Autores: Berned-Samatán, Victor, Piantek, Marten, Coronas, Joaquín, Téllez, Carlos
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2022
País:España
Institución:Universidad de Zaragoza
Repositorio:Zaguán. Repositorio Digital de la Universidad de Zaragoza
OAI Identifier:oai:zaguan.unizar.es:123886
Acceso en línea:http://zaguan.unizar.es/record/123886
Access Level:acceso abierto
id ES_bdc0b8ad5d7c8baa3a448d5d8ee55bb1
oai_identifier_str oai:zaguan.unizar.es:123886
network_acronym_str ES
network_name_str España
spelling Nanofiltration with polyamide thin film composite membrane with ZIF-93/SWCNT intermediate layers on polyimide support Berned-Samatán, Victor Piantek, Marten Coronas, Joaquín Téllez, Carlos Among current separation processes, nanofiltration (NF), besides its easy scalability, exhibits low energy consumption, environmental impact and footprint, being widely used for water treatment and solvent recovery. The development of membranes for NF involves perfecting the skin selective layer, the sublayers and the support. In this work, a multilayer structure membrane is presented where a selective layer of polyamide (PA, thickness 40–60 nm) was interfacially polymerized on a sub-layer of MOF ZIF-93 (thickness ∼ 50 nm) grown on another sub-layer of single-walled carbon nanotubes (SWCNT, thickness ∼ 400 nm) vacuum filtrated on an asymmetric polyimide P84® support (thickness ∼ 200 μm). The membrane with structure PA/ZIF-93/SWCNT/P84 showed excellent results in water NF and methanol organic solvent NF of different dyes (with the highest values of water and methanol permeances of up to 57.6 and 84.5 L·m−2·h−1·bar−1, respectively, with rejections usually greater than 99%). By means of a wide range of characterization techniques (contact angle, AFM, XRD, ATR-FTIR and FIB-SEM) the role of every component in the membrane was elucidated. In fact, the presence of the sublayer of ZIF-93 increased the roughness and hydrophilicity as well as decreased the thickness of the PA layer. These effects are related to the fact that the sublayers subordinate the interfacial polymerization as well as influence the properties of the PA film and therefore its NF performance, even showing chlorine resistance as well as ten-day cross-flow NF stability. http://zaguan.unizar.es/record/123886
title Nanofiltration with polyamide thin film composite membrane with ZIF-93/SWCNT intermediate layers on polyimide support
spellingShingle Nanofiltration with polyamide thin film composite membrane with ZIF-93/SWCNT intermediate layers on polyimide support
Berned-Samatán, Victor
title_short Nanofiltration with polyamide thin film composite membrane with ZIF-93/SWCNT intermediate layers on polyimide support
title_full Nanofiltration with polyamide thin film composite membrane with ZIF-93/SWCNT intermediate layers on polyimide support
title_fullStr Nanofiltration with polyamide thin film composite membrane with ZIF-93/SWCNT intermediate layers on polyimide support
title_full_unstemmed Nanofiltration with polyamide thin film composite membrane with ZIF-93/SWCNT intermediate layers on polyimide support
title_sort Nanofiltration with polyamide thin film composite membrane with ZIF-93/SWCNT intermediate layers on polyimide support
author Berned-Samatán, Victor
author_facet Berned-Samatán, Victor
Piantek, Marten
Coronas, Joaquín
Téllez, Carlos
author_role author
author2 Piantek, Marten
Coronas, Joaquín
Téllez, Carlos
author2_role author
author
author
description Among current separation processes, nanofiltration (NF), besides its easy scalability, exhibits low energy consumption, environmental impact and footprint, being widely used for water treatment and solvent recovery. The development of membranes for NF involves perfecting the skin selective layer, the sublayers and the support. In this work, a multilayer structure membrane is presented where a selective layer of polyamide (PA, thickness 40–60 nm) was interfacially polymerized on a sub-layer of MOF ZIF-93 (thickness ∼ 50 nm) grown on another sub-layer of single-walled carbon nanotubes (SWCNT, thickness ∼ 400 nm) vacuum filtrated on an asymmetric polyimide P84® support (thickness ∼ 200 μm). The membrane with structure PA/ZIF-93/SWCNT/P84 showed excellent results in water NF and methanol organic solvent NF of different dyes (with the highest values of water and methanol permeances of up to 57.6 and 84.5 L·m−2·h−1·bar−1, respectively, with rejections usually greater than 99%). By means of a wide range of characterization techniques (contact angle, AFM, XRD, ATR-FTIR and FIB-SEM) the role of every component in the membrane was elucidated. In fact, the presence of the sublayer of ZIF-93 increased the roughness and hydrophilicity as well as decreased the thickness of the PA layer. These effects are related to the fact that the sublayers subordinate the interfacial polymerization as well as influence the properties of the PA film and therefore its NF performance, even showing chlorine resistance as well as ten-day cross-flow NF stability.
publishDate 2022
format article
status_str publishedVersion
url http://zaguan.unizar.es/record/123886
eu_rights_str_mv openAccess
institution Universidad de Zaragoza
collection Zaguán. Repositorio Digital de la Universidad de Zaragoza
reponame_str Zaguán. Repositorio Digital de la Universidad de Zaragoza
instname_str Universidad de Zaragoza
_version_ 1878440106242605056
publishDateSort 2022
author_browse Berned-Samatán, Victor
Coronas, Joaquín
Piantek, Marten
Téllez, Carlos
score 6,924472

Similares en LA Referencia