프러시안 블루 (PB)의 방사성 세슘 흡착 메커니즘 연구
Adsorption Mechanism of Radioactive Cesium by Prussian Blue
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초록
Since the accident at the Fukushima Daiichi power plant, Prussian blue (PB) hasattracted increasing attention as a material for use in decontaminating the environment. Wehave focused the fundamental mechanism of specific Cs+ adsorption into PB in order to develophigh-performance PB-based Cs+ adsorbents. The ability of PB to adsorb Cs varies considerablyaccording to its origin such as what synthesis method was used, and under what conditions the PBwas prepared. It has been commonly accepted that the exclusive abilities of PB to adsorb hydratedCs+ ions are caused by regular lattice spaces surrounded by cyanido-bridged metals. Cs+ ions aretrapped by simple physical adsorption in the regular lattice spaces of PB. Cs+ ions are exclusivelytrapped by chemical adsorption via the hydrophilic lattice defect sites with proton-exchange fromthe coordination water. Prussian blue are believed to hold great promise for the clean-up of 137Cscontaminated water around nuclear facilities and/or after nuclear accidents.
Abstract
Since the accident at the Fukushima Daiichi power plant, Prussian blue (PB) hasattracted increasing attention as a material for use in decontaminating the environment. Wehave focused the fundamental mechanism of specific Cs+ adsorption into PB in order to develophigh-performance PB-based Cs+ adsorbents. The ability of PB to adsorb Cs varies considerablyaccording to its origin such as what synthesis method was used, and under what conditions the PBwas prepared. It has been commonly accepted that the exclusive abilities of PB to adsorb hydratedCs+ ions are caused by regular lattice spaces surrounded by cyanido-bridged metals. Cs+ ions aretrapped by simple physical adsorption in the regular lattice spaces of PB. Cs+ ions are exclusivelytrapped by chemical adsorption via the hydrophilic lattice defect sites with proton-exchange fromthe coordination water. Prussian blue are believed to hold great promise for the clean-up of 137Cscontaminated water around nuclear facilities and/or after nuclear accidents.
참고문헌 (16)
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