Project
Porous Ion Exchange Membranes with Improved Monovalent Selectivity
Developing membranes that facilitate to ion transport and ionic selectivity has gained tremendous attention in recent years and they might become a potential solution for the world’s most challenging problems facing water pollution and shortage. A stereo hierarchical porous composite structure was developed by cover charged materialsinto the pores of an ultrafiltration membrane. The obtained charged membrane with precise control of porous is able to increase the desalination efficiency in electrodialysis. Ultrafiltration membranes were utilizing as the support for the porous anion exchange membranes. Through controling the pore size and porsity as well as the porous membrane meterial, different ion exchange membanes can be obtained. Optimizing the preparation process to get membranes with highest transport efficiency and lowest resistance, this kind of membrane can be imposed in real electrodialysis applicaion. In conclusion, the technique of alignment the ions channel in porous membranes with function ion exchange materials offer a great possibility for improving the performance of the ion exchange membrane, at the same time this strategy opens a new gate for the further research on porous ion exchange membranes.