| 초록 |
Pristine materials can play a pivotal role as a host material for adsorption applications. Surfactant assisted sol-gel synthesis strategy was applied for the preparation of MCM-41 under basic conditions using tetraethylorthosilicate (TEOS) as silica source and cetyltrimethylammonium bromide (CTAB) as a template. Calcined MCM-41 (Pristine-MCM-41) was used for the adsorption of metal ions and was found to be 100% selective for Zn2+ from artificial seawater containing Ni2+, Li+, Co2+, Cd2+ and Zn2+ as hetero ions. The MCM-41 synthesis strategy and concentration of Zn2+ ions in the adsorption medium does not affect the mole adsorption selectivity. Pristine-SBA-15 exhibited 85 and 15% mole selectivity for Zn2+ and Cd2+ ions, respectively. This highlights the unique property of Pristine-MCM-41 for the selective adsorption of Zn2+ ions from artificial seawater. An adsorbed amount of 80 mg g-1 was observed for Zn2+ ions even in presence of Cd2+ ions. |
