The Influence of Film Thickness on Covalent Organic Membrane Properties and Structure
Mentor 1
Xiaoli Ma
Start Date
16-4-2021 12:00 AM
Description
Covalent organic frameworks (COFs) are an emerging class of porous membrane materials constructed from organic building blocks via strong covalent bonds. They possess a wide range of unique properties including high crystallinity, ordered two or three-dimensional pore structure, tunable pore size and functionality, and excellent thermal and chemical stability. Studies have shown that good performance can be expected from COF membranes. Properties like pore size and COF crystallinity will affect membrane performance; actively tuning these parameters more easily will require further development of COF synthesis methods. Considering that, COF membranes have emerged recently, and good quality membranes can only be made in days-long, well-controlled processes. It is understandable that COF membranes have not yet been commercialized. In general, it is known that the amount of water (or any other substance) that can be transported across a membrane is inversely proportional to the membrane thickness. In the commercial production of membrane materials, membrane thickness is a well-controlled parameter. Seeking to reach that level of control, this study evaluates the facility of controlling membrane thickness and the influence of COF membrane thickness on pure water flux, crystallinity, and hydrophobicity of COF composite membranes.
The Influence of Film Thickness on Covalent Organic Membrane Properties and Structure
Covalent organic frameworks (COFs) are an emerging class of porous membrane materials constructed from organic building blocks via strong covalent bonds. They possess a wide range of unique properties including high crystallinity, ordered two or three-dimensional pore structure, tunable pore size and functionality, and excellent thermal and chemical stability. Studies have shown that good performance can be expected from COF membranes. Properties like pore size and COF crystallinity will affect membrane performance; actively tuning these parameters more easily will require further development of COF synthesis methods. Considering that, COF membranes have emerged recently, and good quality membranes can only be made in days-long, well-controlled processes. It is understandable that COF membranes have not yet been commercialized. In general, it is known that the amount of water (or any other substance) that can be transported across a membrane is inversely proportional to the membrane thickness. In the commercial production of membrane materials, membrane thickness is a well-controlled parameter. Seeking to reach that level of control, this study evaluates the facility of controlling membrane thickness and the influence of COF membrane thickness on pure water flux, crystallinity, and hydrophobicity of COF composite membranes.
