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Cu-MOF-Polydopamine-Incorporated Functionalized Nanofiltration Membranes for Water Treatment: Effect of Surficial Adhesive Modification Techniques
https://orcid.org/0000-0001-6530-4310
Nanofiltration (NF) membranes have been used for different applications in water treatment. In this work, we studied two facile surficial adhesive functionalization processes using polydopamine (pDA) and a metal–organic framework (MOFs) and investigated their individual and synergistic effects on membrane rejection, permeability, and antifouling properties. The copper MOF nanoparticles (Cu-MOF) were synthesized and incorporated with the pDA for surface coating of NF membranes using two different static (dip-coating) and dynamic (filtration-assisted) fabrication processes. All of the functionalized membranes were characterized completely, and the effects of pDA and Cu-MOF separately and together on the membrane physicochemical properties were identified. The results showed that the surface functionalization by only pDA enhanced the dye rejection from 22% (blank) to 98% (pDA-functionalized membrane). The dip-coating approach resulted in uniform polymerization of pDA on the membrane surface, while the filtration-assisted technique generated a deficient pDA layer. The incorporation of Cu-MOF into the pDA layer improved the permeability of the pDA-functionalized membrane by increasing the hydrophilicity of membranes and providing more water pathways due to the porous structure of MOFs. In addition, the molecular dynamics (MD) investigation of MOF-functionalized membranes revealed the role of embedded Cu-MOF charge repulsion mechanisms in the rejection of anionic and cationic dyes.
Novel Cu-MOF-polydopamine-incorporated functionalized nanofiltration membranes were fabricated, and the effects of functionalization methods on membrane performance were investigated.
Cu-MOF-Polydopamine-Incorporated Functionalized Nanofiltration Membranes for Water Treatment: Effect of Surficial Adhesive Modification Techniques
https://orcid.org/0000-0001-6530-4310
Nanofiltration (NF) membranes have been used for different applications in water treatment. In this work, we studied two facile surficial adhesive functionalization processes using polydopamine (pDA) and a metal–organic framework (MOFs) and investigated their individual and synergistic effects on membrane rejection, permeability, and antifouling properties. The copper MOF nanoparticles (Cu-MOF) were synthesized and incorporated with the pDA for surface coating of NF membranes using two different static (dip-coating) and dynamic (filtration-assisted) fabrication processes. All of the functionalized membranes were characterized completely, and the effects of pDA and Cu-MOF separately and together on the membrane physicochemical properties were identified. The results showed that the surface functionalization by only pDA enhanced the dye rejection from 22% (blank) to 98% (pDA-functionalized membrane). The dip-coating approach resulted in uniform polymerization of pDA on the membrane surface, while the filtration-assisted technique generated a deficient pDA layer. The incorporation of Cu-MOF into the pDA layer improved the permeability of the pDA-functionalized membrane by increasing the hydrophilicity of membranes and providing more water pathways due to the porous structure of MOFs. In addition, the molecular dynamics (MD) investigation of MOF-functionalized membranes revealed the role of embedded Cu-MOF charge repulsion mechanisms in the rejection of anionic and cationic dyes.
Novel Cu-MOF-polydopamine-incorporated functionalized nanofiltration membranes were fabricated, and the effects of functionalization methods on membrane performance were investigated.
Cu-MOF-Polydopamine-Incorporated Functionalized Nanofiltration Membranes for Water Treatment: Effect of Surficial Adhesive Modification Techniques
https://orcid.org/0000-0001-6530-4310
Nanofiltration (NF) membranes have been used for different applications in water treatment. In this work, we studied two facile surficial adhesive functionalization processes using polydopamine (pDA) and a metal–organic framework (MOFs) and investigated their individual and synergistic effects on membrane rejection, permeability, and antifouling properties. The copper MOF nanoparticles (Cu-MOF) were synthesized and incorporated with the pDA for surface coating of NF membranes using two different static (dip-coating) and dynamic (filtration-assisted) fabrication processes. All of the functionalized membranes were characterized completely, and the effects of pDA and Cu-MOF separately and together on the membrane physicochemical properties were identified. The results showed that the surface functionalization by only pDA enhanced the dye rejection from 22% (blank) to 98% (pDA-functionalized membrane). The dip-coating approach resulted in uniform polymerization of pDA on the membrane surface, while the filtration-assisted technique generated a deficient pDA layer. The incorporation of Cu-MOF into the pDA layer improved the permeability of the pDA-functionalized membrane by increasing the hydrophilicity of membranes and providing more water pathways due to the porous structure of MOFs. In addition, the molecular dynamics (MD) investigation of MOF-functionalized membranes revealed the role of embedded Cu-MOF charge repulsion mechanisms in the rejection of anionic and cationic dyes.
Novel Cu-MOF-polydopamine-incorporated functionalized nanofiltration membranes were fabricated, and the effects of functionalization methods on membrane performance were investigated.
Cu-MOF-Polydopamine-Incorporated Functionalized Nanofiltration Membranes for Water Treatment: Effect of Surficial Adhesive Modification Techniques
Parkerson, Zane Joseph (author) / Le, Tin (author) / Das, Parnab (author) / Mahmoodi, S. Nima (author) / Esfahani, Milad Rabbani (author)
ACS ES&T Water ; 1 ; 430-439
2021-02-12
Article (Journal)
Electronic Resource
English
| British Library Online Contents | 2015
| British Library Online Contents | 2015