digilib@itb.ac.id +62 812 2508 8800

2019_EJRNL_PP_Meng_Ding_21.pdf
PUBLIC Latifa Noor

Titanium dioxide (TiO2) composites have shown promise in desalination as electrode materials of capacitivedeionization (CDI). However, it remains a significant challenge to explore their pseudocapacitive potential for furtherenhancement of salt adsorption capacity and long-term stability. Herein, we report a titanium dioxide/porous carbon composite(TiO2@PC) with tunable pseudocapacitance for a high-performance membrane CDI (MCDI) based on a metal?organicframeworks (MOFs)-derived strategy. By controlling the pyrolysis conditions, the crystalline degree and specific surface areas ofTiO2@PC samples have been optimized to improve the salt adsorption performance. A synergy of high pseudocapacitance andgood oxidation resistance endows the anatase TiO2@PC (annealed at 600°C) with an improved salt adsorption capacity of46.7 mg g?1at 10 mA g?1and stable cycling performance over 50 cycles. These properties reveal the great potential of anataseTiO2@PC to serve as a promising candidate of electrode materials for MCDI