| 초록 |
Capacitive deionization (CDI) is an high potential desalination technology with a relatively high-energy-efficient and eco-friendly process, and its performance strongly depends on the characteristics of porous electrode. High-surface activated carbon powders (ACPs) are frequently used as the electrode materials for CDI. The surface properties of carbon-based electrodes also affect the performance of CDI electrodes. The existence of hydrophilic surface functional groups is good for improving the ionic sorption capacitance. In this work, the surface of ACPs was modified with TiO2 through a sol-gel method. In terms of the ionic sorption capacitance, the quantity of TiO2 coated was optimized. The surface and electrochemical properties of TiO2/ACP electrodes were characterized by SEM, TEM, CV and EIS measurements. It was clear that the specific capacitance of ACP electrodes could be improved by the coating of TiO2. Detailed performance for the desalination was studied. |
