The fragmented 3D-covalent organic framework in cellulose acetate membrane for efficient phenol removal

被引:11
|
作者
Mohammed, Abdul Khayum [1 ]
Ali, Jisha Kuttiani [2 ,3 ]
Kuzhimully, Mahira Bashri Selman [1 ]
Addicoat, Matthew A. [4 ]
Varghese, Sabu [5 ]
Baias, Maria [5 ]
Alhseinat, Emad [2 ,3 ]
Shetty, Dinesh [1 ,6 ]
机构
[1] Khalifa Univ, Dept Chem, POB 127788, Abu Dhabi, U Arab Emirates
[2] Khalifa Univ, Dept Chem Engn, POB 127788, Abu Dhabi, U Arab Emirates
[3] Khalifa Univ, Ctr Membranes & Adv Water Technol, POB 127788, Abu Dhabi, U Arab Emirates
[4] Nottingham Trent Univ, Sch Sci & Technol, Clifton Lane, Nottingham NG11 8NS, England
[5] NYU, Sci Div, Abu Dhabi NYUAD, Abu Dhabi, U Arab Emirates
[6] Khalifa Univ, Ctr Catalysis & Separat CeCaS, POB 127788, Abu Dhabi, U Arab Emirates
关键词
Covalent organic frameworks; Mixed-matrix membranes; Water purification; Phenol removal; Functional porous materials; Toxic molecules; WASTE-WATER; COVALENT; CRYSTALLINE; STABILITY; DENSITY;
D O I
10.1016/j.cej.2023.143234
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The membrane-based separation of molecular pollutants has several advantages such as minimum energy uti-lization, recyclability, and commercial viability. However, the membrane fabrications should be in line with the suitable porosity, functionality, mechanical strength, and economical for their practical applications. Herein, we report a novel hybrid membrane (TamDbta-CA) of low-cost cellulose acetate (CA) polymer and functionally diverse porous defective 3D-COF (TamDbta) for the removal of toxic phenol from industrially relevant synthetic oil-produced water. The low percentage (0.8%) use of TamDbta as pillars in CA-membranes improved the porosity, hydrophilicity, mechanical strength, and separation efficiency of phenol (similar to 80 to 90 %). The defective functional sites (-C=O and -Br) and nanoporosity of TamDbta and its uniform distribution throughout the mixed-matrix membrane contributed to the enhancement of membrane performance. The strategic membrane design and its efficient use for removing toxic pollutants may pave the way for using COFs as a pillar in commercially viable membranes.
引用
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页数:8
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