Modifying bipolar membranes with palygorskite and FeCl3 |
| |
Authors: | Feiyan Peng Shuchuan Peng Chuanhui Huang Tongwen Xu |
| |
Institution: | aSchool of Resources & Environmental Engineering, Hefei University of Technology, PR China;bLaboratory of Functional Membranes, School of Chemistry and Materials Science, University of Science and Technology of China, Jinzhai Road 96#, Hefei, Anhui 230026, PR China |
| |
Abstract: | To explore a more function-stable and energy-efficient bipolar membrane, palygorskite and FeCl3 were added at the intermediate layer as water-splitting catalysts. As proven, the two materials have a synergetic effect on water splitting. Particularly, the bipolar membrane modified with 5 g dm−3 palygorskite and 0.005 mol dm−3 FeCl3 can achieve a voltage drop of 0.68 V at 100 mA cm−2 and loses only 14.7 μg of Fe after an electrodialysis operation at 100 mA cm−2 for 660 min. Obviously, palygorskite can protect ferric ions from significant loss, which makes the membrane stable in the performance of water splitting. Nevertheless, how palygorskite immobilizes ferric ions is still under investigation. |
| |
Keywords: | Water splitting Bipolar membrane Palygorskite Ferric compounds |
本文献已被 ScienceDirect 等数据库收录! |
|