| 초록 |
The mesoporous silica SBA-15 that is prepared using a triblock copolymer as a template has high superficial areas and large uniform pores. It’s silica wall surface can be modified with organic groups to tailor their properties and achieve specific purposes. The modified SBA-15 has regular pore canal structure and uniform distribution of functional groups on the pore surface. We have successfully modified SBA-15 using melamine and chlorosulfonic acid. The SBA-15-NH-SO3H was used for the adsorption of metal ion in solution. Compared to SBA-15-SO3H, metal ion’s mole selectivity adsorption of SBA-15-NH-SO3H increased. It was characterized by Fourier transform infrared spectroscopy, N adsorption-desorption isotherm, Inductively coupled plasma-atomic emission spectroscope, Small Angle X-ray Scattering and Transmission electron microscopy. The adsorption of metal ions onto sulfonic acid modified SBA-15 were strongly dependent on the chemical interactions and chelating effects. |
