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Nickel-metal-organic framework nanobelt based composite membranes for efficient Sr^(2+) removal from aqueous solution

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Environmental Science and Ecotechnology 2020年第3期3卷 13-22页

作者： Junye Cheng Kaili Liu Xin Li Lei Huang Jie Liang Guangping Zheng Guangcun Shan School of Instrumentation Science and Opto-electronics Engineering Beihang UniversityNo.37 XueYuan RoadBeijing100083China Department of Mechanical Engineering The Hong Kong Polytechnic UniversityKowloonHong Kong999077China School of Environment and Space Engineering Beihang UniversityBeijing100191China School of Metallurgy and Environment Central South UniversityChangsha410083China

The sorption removal of radionuclides Sr^(2+) using a freestanding functional membrane is an interesting and significant research area in the remediation of radioactive ***,a novel self-assembled membrane consisting of metaleorganic framework(MOF)nanobelts and graphene oxides(GOs)are synthesized through a simple and facile filtration *** membrane possesses a unique interwove morphology as evidenced from SEM *** experiments suggest that the GO/Ni-MOF composite membrane could remove Sr^(2+) ions from aqueous solutions and the Sr^(2+) adsorption capacity and efficiency of the GO/Ni-MOF composite membrane is relevant to the MOF content in the ***,the dominant interaction mechanism was interface or surface complexation,electrostatic interaction as well as ion *** maximum effective sorption of Sr^(2+) over GO/Ni-MOF membrane is 32.99% with 2 mg composite membrane containing a high content of Ni-MOF at 299 K in 100 mg/L Sr^(2+) aqueous *** FT-IR and XPS results suggest that the synergistic effect between GO and Ni-MOF is determinant in the sorption Sr^(2+) *** GO/Ni-MOF composite membrane is demonstrated to have the advantages of efficient removal of Sr^(2+),low cost and simple synthesis route,which is promising in the elimination of radionuclide contamination.

关键词： Metaleorganic framework(MOF)nanobelts Graphene oxide Radioactive waste strontium ions Adsorption

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