| 초록 |
As the nuclear industry grows gradually, researches on effectively eliminate radioactive wastes are required to result from operational, nuclear facilities waste and nuclear disasters. Herein, we demonstrate that TiO2 photocatalysis can significantly increase the Cs+adsorption capacity of Prussian blue (PB), revealing that in PB/TiO2 composites, Cs+ ions are adsorbed exclusively on PB. This enhancement was suppressed by high PB contents (i.e., low TiO2 contents) because of the concomitant suppression of photogenerated electron transfer from TiO2 to PB. The increase of Cs+ adsorption capacity upon irradiation was ascribed to the concomitant reduction of PB by photogenerated electrons transferred from TiO2. By optimizing the ratio of PB/TiO2, it is possible to determine the maximum Cs adsorption capacity and identify the photocatalytic Cs adsorption mechanism. Therefore, this study will provide that PB/TiO2 can be one of the great promised materials for future Cs removal research. |
