TY - JOUR
T1 - Covalent organic framework modified polyamide nanofiltration membrane with enhanced performance for desalination
AU - Wang, Chongbin
AU - Li, Zhiyuan
AU - Chen, Jianxin
AU - Li, Zhen
AU - Yin, Yongheng
AU - Cao, Li
AU - Zhong, Yunlong
AU - Wu, Hong
N1 - Generated from Scopus record by KAUST IRTS on 2023-09-20
PY - 2017/2/1
Y1 - 2017/2/1
N2 - A novel thin film nanocomposite (TFN) membrane was prepared by incorporating covalent organic frameworks (COFs) into polyamide (PA) layer on a polyether sulfone (PES) substrate, through interfacial polymerization method. The porous structure of COFs (SNW-1) provided more passageway for water transport. Meanwhile, the reaction between SNW-1 and trimesoyl chloride (TMC) during interfacial polymerization formed strong covalent bonds for better interface compatibility. The surface hydrophilicity of the hybrid membrane was improved due to the existence of amine-rich SNW-1. The influence of the interfacial polymerization conditions and piperazine (PIP) and the loading of SNW-1 on the membrane performance were investigated. The resultant PA-SNW-1/PES membrane with a SNW-1 loading of 1 g/m2 exhibited an increased pure water flux from 100 L m−2 h−1 MPa−1 to 192.5 L m−2 h−1 MPa−1 compared to the pristine PA membrane while the rejection to Na2SO4 maintained above 80%. Moreover, the membrane also showed long-term running stability.
AB - A novel thin film nanocomposite (TFN) membrane was prepared by incorporating covalent organic frameworks (COFs) into polyamide (PA) layer on a polyether sulfone (PES) substrate, through interfacial polymerization method. The porous structure of COFs (SNW-1) provided more passageway for water transport. Meanwhile, the reaction between SNW-1 and trimesoyl chloride (TMC) during interfacial polymerization formed strong covalent bonds for better interface compatibility. The surface hydrophilicity of the hybrid membrane was improved due to the existence of amine-rich SNW-1. The influence of the interfacial polymerization conditions and piperazine (PIP) and the loading of SNW-1 on the membrane performance were investigated. The resultant PA-SNW-1/PES membrane with a SNW-1 loading of 1 g/m2 exhibited an increased pure water flux from 100 L m−2 h−1 MPa−1 to 192.5 L m−2 h−1 MPa−1 compared to the pristine PA membrane while the rejection to Na2SO4 maintained above 80%. Moreover, the membrane also showed long-term running stability.
UR - https://linkinghub.elsevier.com/retrieve/pii/S0376738816310778
UR - http://www.scopus.com/inward/record.url?scp=84991394199&partnerID=8YFLogxK
U2 - 10.1016/j.memsci.2016.09.055
DO - 10.1016/j.memsci.2016.09.055
M3 - Article
SN - 1873-3123
VL - 523
SP - 273
EP - 281
JO - Journal of Membrane Science
JF - Journal of Membrane Science
ER -