文献类型：期刊文献

英文题名：Investigation of adsorption properties and mechanism of uranium(VI) and europium(III) on magnetic amidoxime-functionalized MCM-41

作者：Liu, Fenglei[1];Huang, Wei[1];Wang, Shuoyu[2];Hu, Baowei[1]

机构：[1]Shaoxing Univ, Sch Life Sci, Huancheng West Rd 508, Shaoxing 312000, Peoples R China;[2]Sun Yat Sen Univ, Sch Chem, PCFM Lab, Guangzhou 510275, Peoples R China

年份：2022

卷号：594

外文期刊名：APPLIED SURFACE SCIENCE

收录：SCI-EXPANDED(收录号：WOS:000802562700003)、、EI(收录号：20221812068513)、Scopus(收录号：2-s2.0-85129234375)、WOS

基金：Acknowledgments We gratefully thank the Zhejiang Public Welfare Technology Appli-cation and Social Development Project (LGF21C030001) , the China Postdoctoral Science Foundation (2021M702911) and Key Laboratory of Environmental Pollution Control Technology Research of Zhejiang Province (NO.2021ZEKL12) .

语种：英文

外文关键词：MCM-41; Magnetite; Amidoxime; Uranium(VI); Europium(III)

外文摘要：Herein, a novel magnetic amidoxime-functionalized MCM-41 (Fe3O4@MCM-41-PDA/OA) was developed by loading Fe3O4 on amidoxime-functionalized MCM-41 via a simple strategy. The microscopic surface morphologies and structures of the as-synthesized composites were analyzed various physicochemical and spectroscopic techniques, while the experimental parameters were optimized by means of the single factor experimental methodology to improve the removal efficiency of uranium(VI) and europium(III) on Fe3O4@MCM-41-PDA/OA. The static adsorption test showed that the saturated adsorbed amounts for uranium(VI) and europium(III) were 38.11 mg/g and 25.36 mg/g, respectively. Meanwhile, the adsorption isotherm and kinetics studies revealed that elimination of the two radionuclides were a monolayer and chemisorption process, whereas the calculated thermodynamic parameters suggested that the adsorption of the two radionuclide was spontaneous and feasible. The SEM and XPS analysis conformed that immobilization of the two radionuclides was fulfilled through the binding interactions between U(VI)/Eu(III) and the amino, phenolic hydroxyls and amidoxime groups on the surface of Fe3O4@MCM-41-PDA/OA. This work provided a simple and cost-effective way to separation and enrichment of radionuclides from contaminated water.