| 초록 |
To maintain a healthy environmental system, the effective removal of heavy metal ions from water remains a major challenge. Herein, we report a facile fabrication of monodisperse polymeric porous microcapsules coated with polyethyleneimine (PEI), which can effectively adsorb heavy metal ions from water, using a microfluidic approach. The pores are produced by polymerization-induced phase separation in the shell of the microcapsule during photopolymerization. The microcapsules can be conveniently separated from suspensions by a magnet due to their excellent magnetism arising from the magnetic particles embedded in the polymer shell. The adsorption behaviors of various metal ions including Cu2+, Zn2+, and Cd2+ toward the microcapsules in aqueous solution were thoroughly studied by varying process parameters such as pH, contact time, metal ion concentration, and PEI density of the microcapsules. |
