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Synthesis and Adsorption Properties of Gadolinium-Imprinted Divinylbenzene-Based Copolymers
ACS Omega ( IF 4.1 ) Pub Date : 2021-01-21 , DOI: 10.1021/acsomega.0c05812
Zinaida Bunina 1 , Kateryna Bryleva 1 , Konstantin Belikov 1, 2
Affiliation  

Ion-imprinted divinylbenzene and methacrylic acid copolymers for rare-earth element adsorption with crosslink ratios 60 and 40% have been synthesized. Ion imprinting has been carried out via the trapping approach. Alizarin red S has been incorporated in the polymers as a nonvinylated ligand. The obtained materials were characterized via scanning electron microscopy and Fourier transform infrared spectroscopy. Synthesized polymers exist as gel-type nonporous spherical agglomerates from 2 to 6 μm with low surface areas. The sorption properties of the synthesized polymers with respect to lanthanides in static and dynamic modes have been studied. The most efficiently synthesized materials extract rare earth elements from solutions at pH 4–7. The maximum sorption capacity of the obtained polymers with regard to Gd is around 0.5 mmol/g. According to the obtained results, the imprinted polymer with a crosslink ratio 60% is characterized by the highest values of distribution coefficients for lanthanides. The total lanthanide breakthrough capacity for this polymer is 0.861 μmol/g. The adsorption column has been constructed using the imprinted polymer with a crosslink ratio 60%. The column extraction and preconcentration procedure for the trace Eu content determination in the strontium iodide recycled material by inductively coupled plasma–atomic emission spectrometry at a level of 1 × 10–6%(mass) has been proposed.

中文翻译:

d印迹二乙烯基苯基共聚物的合成与吸附性能

合成了用于稀土元素吸附的离子印迹二乙烯基苯和甲基丙烯酸共聚物,其交联比为60%和40%。离子印迹已通过捕获方法进行。茜素红S已经作为非乙烯基化的配体掺入聚合物中。通过扫描电子显微镜和傅立叶变换红外光谱对获得的材料进行表征。合成的聚合物以2至6μm的凝胶型无孔球形团聚体的形式存在,具有低表面积。研究了合成聚合物对镧系元素在静态和动态模式下的吸附性能。合成效率最高的材料从pH值为4-7的溶液中提取稀土元素。所得聚合物相对于Gd的最大吸附容量为约0.5mmol / g。根据获得的结果,具有60%的交联率的压印聚合物的特征在于镧系元素的分配系数的最大值。该聚合物的镧系元素总穿透能力为0.861μmol/ g。吸附塔是使用具有60%交联比的印迹聚合物构建的。电感耦合等离子体原子发射光谱法测定碘化锶再生材料中微量Eu的柱萃取和预富集程序 吸附塔是使用具有60%交联比的印迹聚合物构建的。电感耦合等离子体原子发射光谱法测定碘化锶再生材料中微量Eu的柱萃取和预富集程序 吸附塔是使用具有60%交联比的印迹聚合物构建的。电感耦合等离子体原子发射光谱法测定碘化锶再生材料中微量Eu的柱萃取和预富集程序提出了–6(质量)
更新日期:2021-02-02
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