聚丙烯腈
普鲁士蓝
纳米纤维
放射性废物
吸附
纳米颗粒
核化学
铯
结晶度
介孔材料
材料科学
化学工程
化学
放射化学
纳米技术
无机化学
聚合物
复合材料
有机化学
催化作用
物理化学
工程类
电化学
电极
作者
Hyun Cheol Kim,Min Sun Kim,Wan No Lee,Soon Hyun Kim
标识
DOI:10.1016/j.jhazmat.2017.12.050
摘要
After the Fukushima Daiichi Nuclear Power Plant disaster in Japan in 2011, the demand drastically increased for efficient technology for the removal of radioactive cesium. Prussian blue (PB) nanoparticles have shown excellent adsorption ability toward Cs. In this study, we synthesized PB nanoparticles incorporated polyacrylonitrile nanofiber (PB/PAN). PB/PAN has the porous structure of nanofibers, with diameters of several hundred nanometers. PB nanoparticles can be incorporated successfully into the PAN matrix without any change to their intrinsic crystallinity and structure. The mesoporous structure of PB/PAN and the incorporation of PB nanoparticles led to an increase in the Brunauer–Emmett–Teller surface area and pore volume. In addition, PB/PAN exhibited excellent wettability with water. With simple filtering for the removal of radioactive cesium, PB/PAN showed high removal efficiency (87 ± 3%) within 10 s for 10 mL of 137Cs solution (1000 Bq L−1). In addition, the 137Cs removal by PB/PAN showed high removal efficiency (70 ± 2%, after 1 h), even in the actual seawater medium (1000 Bq L−1 of 137Cs). Therefore, PB-incorporated PAN nanofibers can be considered useful in the practical application of Cs removal from radioactive wastewater.
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