| 1 | 咪唑溴盐离子液体接枝修饰共价有机框架材料的辐射合成及其吸附性能研究显示文摘在乏燃料后处理及核环境修复等领域,设计合成高效、高选择性分离TcO-4及其模拟物ReO-4的吸附剂材料具有重要意义。共价有机框架(COF)材料是一种结晶多孔聚合物材料,在放射性核素分离方面具有独特优势。本研究首先合成一种富含乙烯基的二维COF材料(TbDa-COF),通过γ射线预辐射引发接枝方法,将离子液体1-乙烯基-3-乙基咪唑溴盐(C_(2)vimBr)成功接枝到TbDa-COF上,辐射接枝后材料仍保持良好的结晶性和多孔性。结果表明,影响接枝率的主要因素为单体溶液浓度,随着C_(2)vimBr浓度增加,接枝率呈上升趋势,而溶剂种类对接枝率的影响较小。所制备的[C_(2)vimBr]-TbDa-COF材料对ReO-4具有优异的吸附分离性能,可在2 min内达到吸附平衡,饱和吸附量可达420 mg/g,而在接枝链上引入长链疏水基团有助于提升吸附选择性。本研究展现了离子液体修饰COF材料在乏燃料后处理及核环境修复中的巨大潜力。 | 张书铭 王月 李久强 彭静 翟茂林 | 2023 | 同位素2023，36，5： | 0 |
| 3 | Advanced porous materials and emerging technologies for radionuclides removal from Fukushima radioactive water显示文摘Japan recently announced the plan to discharge over 1.2 million tons of radioactive water into the Pacific Ocean,which contained hazardous radionuclides such as^(60)Co,^(90)Sr,^(125)Sb,^(129)I,^(3)H,^(137)Cs,and^(99)TcO^(4)^(-),etc.The contaminated water will pose an enormous threat to global ecosystems and human health.Developing materials and technologies for efficient radionuclide removal is highly desirable and arduous because of the extreme conditions,including super acidity or alkalinity,high ionic strength,and strong ionizing radiation.Recently,advanced porous material,such as porous POPs,MOFs,COFs,PAFs,etc.,has shown promise of improved separation of radionuclides due to their intrinsic structural advantages.Furthermore,emerging technologies applied to radionuclide removal have also been summarized.In order to better deal with radionuclide contamination,higher requirements for the design of nanomaterials and technologies applied to practical radionuclide removal are proposed.Finally,we call for comprehensive implementation of strategies and strengthened cooperation to mitigate the harm caused by radioactive contamination to oceans,atmosphere,soil,and human health. | Xiaolu Liu Muliang Xiao Yang Li Zhongshan Chen Hui Yang Xiangke Wang | 2023 | Eco-Environment & Health2023，2，4： | 0 |
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