| 초록 |
Radioactive cesium have threatened human health through the consumption of contaminated water, so removal of radioactive cesium from wastewater has become a hot topic in both academic and industrial fields. Herein, we reported a kind of alginate−clay hydrogel with superabsorbent properties, superior mechanical performance, and high cesium removal efficiency. The main strategy for the preparation of superabsorbent hydrogels was ionic crosslinking of alginate by cationic clay. The as-prepared hydrogels exhibited high absorption capacity for radioactive cesium solution through a spontaneous physic-sorption process which fitted well with pseudo-second-order and Freundlich isotherm models. The maximum removal efficiencies of hydrogel samples for cesium is 108.06 mg/g. These results demonstrated that alginate−clay nanocomposite hydrogels were effective adsorbents for removal of radioactive cesium, which would provide a new platform for decontamination. |
