| 초록 |
The modified periodic mesoporous organosilica(PMO) has the advantages of extremely high specific surface area, regular pore canal structure, and uniform distribution of organic functional groups on the pore surface. We have been successfully synthesized through bissilylated urea bridged PMO and modified using chlorosulphonic acid in chloroform. It was used for the sorption of Co(II) in wastewater aqueous solution. The effects of solution pH, sorption time, temperature and initial metal ion concentration onto metal ions sorption have investigated. It was characterized by FT-IR, EDX, SEM, TEM and TGA. The sorption of metal ions onto modified PMO correlated well with the Brunauer-Emmett-Teller(BET) type adsorption isotherm and adsorption capacities. It was concluded that chemical interactions and chelating effects were playing an important role in the sorption of metal ions onto sulphonic acid modified PMO. |
