Covalent Organic Framework Nanosheets as Reactive Fillers To Fabricate Free-Standing Polyamide Membranes for Efficient Desalination

2020 ◽  
Vol 12 (24) ◽  
pp. 27777-27785 ◽  
Author(s):  
Niaz Ali Khan ◽  
Jinqiu Yuan ◽  
Hong Wu ◽  
Tong Huang ◽  
Xinda You ◽  
...  
Keyword(s):  
Free Standing ◽  
Covalent Organic Framework ◽  
Organic Framework ◽  
Polyamide Membranes

scholarly journals Ultra-permeable polyamide membranes harvested by covalent organic framework nanofiber scaffolds: a two-in-one strategy

2019 ◽  
Vol 10 (39) ◽  
pp. 9077-9083 ◽  
Author(s):  
Zhe Zhang ◽  
Xiansong Shi ◽  
Rui Wang ◽  
Ankang Xiao ◽  
Yong Wang
Keyword(s):  
Water Transport ◽  
Covalent Organic Framework ◽  
Nanofiber Scaffolds ◽  
Organic Framework ◽  
Polyamide Membranes

We demonstrated a two-in-one strategy for the fabrication of ultra-permeable polyamide layers featuring ultrathin thicknesses and increased water transport domains.

scholarly journals Self-standing and flexible covalent organic framework (COF) membranes for molecular separation

2020 ◽  
Vol 6 (41) ◽  
pp. eabb1110
Author(s):  
Jiangtao Liu ◽  
Gang Han ◽  
Dieling Zhao ◽  
Kangjia Lu ◽  
Jie Gao ◽  
...  
Keyword(s):  
Building Blocks ◽  
Shape Selectivity ◽  
Honeycomb Lattice ◽  
Free Standing ◽  
Covalent Bonds ◽  
Separation Science ◽  
Covalent Organic Framework ◽  
Molecular Building Blocks ◽  
Almost All ◽  
Organic Framework

Almost all covalent organic framework (COF) materials conventionally fabricated by solvothermal method at high temperatures and pressures are insoluble and unprocessable powders, which severely hinder their widespread applications. This work develops an effective and facile strategy to construct flexible and free-standing pure COF membranes via the liquid-liquid interface-confined reaction at room temperature and atmospheric pressure. The aperture size and channel chemistry of COF membranes can be rationally designed by bridging various molecular building blocks via strong covalent bonds. Benefiting from the highly-ordered honeycomb lattice, high solvent permeances are successfully obtained and follow the trend of acetonitrile > acetone > methanol > ethanol > isopropanol. Interestingly, the imine-linked COF membrane shows higher nonpolar solvent permeances than b-ketoenamine-linked COF due to their difference in pore polarity. Both kinds of COF membranes exhibit high solvent permeances, precise molecular sieving, excellent shape selectivity, and sufficient flexibility for membrane-based separation science and technology.

Incorporating Covalent Organic Framework Nanosheets into Polyamide Membranes for Efficient Desalination

2021 ◽  
pp. 119046
Author(s):  
Niaz Ali Khan ◽  
Hong Wu ◽  
Yuan Jinqiu ◽  
Wu Mengyuan ◽  
Pengfei Yang ◽  
...  
Keyword(s):  
Covalent Organic Framework ◽  
Organic Framework ◽  
Polyamide Membranes

3D covalent organic framework membrane for efficient proton conduction

2021 ◽  
Author(s):  
Chunyang Fan ◽  
Haobo Geng ◽  
Hong Wu ◽  
Quan Peng ◽  
Xiaoyao Wang ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Proton Conduction ◽  
Free Standing ◽  
Covalent Organic Framework ◽  
Organic Framework

Fabricating three-dimensional (3D) covalent organic framework (COF) membranes is in infancy stage. Here, we report the fabrication of free-standing uniform 3D COF membrane, COF-300 membrane, with interconnected nanochannels using interfacial...

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