Synthesis and Application of a Novel Metal–Organic Frameworks-Based Ion-Imprinted Polymer for Effective Removal of Co(II) from Simulated Radioactive Wastewater
In this work, a novel metal–organic frameworks (MOFs)-based ion-imprinted polymer (MIIP) was prepared to remove Co(II) from simulated radioactive wastewater. The batch experiments indicated that the sorption was well described by the pseudo-second-order kinetic and Langmuir models, and it is monolay...
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MDPI AG
2023-04-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/15/9/2150 |
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| author | Li Yu Tu Lan Guoyuan Yuan Chongxiong Duan Xiaoqin Pu Ning Liu |
| author_facet | Li Yu Tu Lan Guoyuan Yuan Chongxiong Duan Xiaoqin Pu Ning Liu |
| author_sort | Li Yu |
| collection | DOAJ |
| description | In this work, a novel metal–organic frameworks (MOFs)-based ion-imprinted polymer (MIIP) was prepared to remove Co(II) from simulated radioactive wastewater. The batch experiments indicated that the sorption was well described by the pseudo-second-order kinetic and Langmuir models, and it is monolayer chemisorption. The theoretical maximum sorption capacity was estimated to be 181.5 mg∙g<sup>−1</sup>, which is by far the reported maximum value of Co(II) sorption by the imprinted materials. The MIIP presented an excellent selectivity for Co(II) in the presence of common monovalent and divalent metal ions, and the selectivity coefficients were 44.31, 33.19, 10.84, 27.71, 9.45, 16.25, and 7.60 to Li(I), K(I), Mg(II), Ca(II), Mn(II), Ba(II), and Cd(II), respectively. The sorption mechanism was explored by X-ray photoelectron spectroscopy (XPS) technology and density functional theory (DFT) calculations, suggesting that Co(II) was adsorbed by the MIIP via the chelation of 4-vinylpyridine (VP) ligands with Co(II), which was a spontaneous process, and the optimal coordination ratio of VP to Co(II) was 6. This work suggested that the MIIP has a high sorption capacity and excellent selectivity for Co(II), which is of great significance for the selective separation of Co-60 from radioactive wastewater. |
| first_indexed | 2024-03-11T04:09:23Z |
| format | Article |
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| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-11T04:09:23Z |
| publishDate | 2023-04-01 |
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| series | Polymers |
| spelling | doaj.art-ae3c7faa712549a8a8834db12b7abe482023-11-17T23:35:53ZengMDPI AGPolymers2073-43602023-04-01159215010.3390/polym15092150Synthesis and Application of a Novel Metal–Organic Frameworks-Based Ion-Imprinted Polymer for Effective Removal of Co(II) from Simulated Radioactive WastewaterLi Yu0Tu Lan1Guoyuan Yuan2Chongxiong Duan3Xiaoqin Pu4Ning Liu5College of Chemistry and Chemical Engineering, Chongqing University of Science and Technology, Chongqing 401331, ChinaKey Laboratory of Radiation Physics and Technology of the Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, ChinaCollege of Chemistry and Chemical Engineering, Chongqing University of Science and Technology, Chongqing 401331, ChinaSchool of Materials Science and Energy Engineering, Foshan University, Foshan 528231, ChinaCollege of Chemistry and Chemical Engineering, Chongqing University of Science and Technology, Chongqing 401331, ChinaKey Laboratory of Radiation Physics and Technology of the Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, ChinaIn this work, a novel metal–organic frameworks (MOFs)-based ion-imprinted polymer (MIIP) was prepared to remove Co(II) from simulated radioactive wastewater. The batch experiments indicated that the sorption was well described by the pseudo-second-order kinetic and Langmuir models, and it is monolayer chemisorption. The theoretical maximum sorption capacity was estimated to be 181.5 mg∙g<sup>−1</sup>, which is by far the reported maximum value of Co(II) sorption by the imprinted materials. The MIIP presented an excellent selectivity for Co(II) in the presence of common monovalent and divalent metal ions, and the selectivity coefficients were 44.31, 33.19, 10.84, 27.71, 9.45, 16.25, and 7.60 to Li(I), K(I), Mg(II), Ca(II), Mn(II), Ba(II), and Cd(II), respectively. The sorption mechanism was explored by X-ray photoelectron spectroscopy (XPS) technology and density functional theory (DFT) calculations, suggesting that Co(II) was adsorbed by the MIIP via the chelation of 4-vinylpyridine (VP) ligands with Co(II), which was a spontaneous process, and the optimal coordination ratio of VP to Co(II) was 6. This work suggested that the MIIP has a high sorption capacity and excellent selectivity for Co(II), which is of great significance for the selective separation of Co-60 from radioactive wastewater.https://www.mdpi.com/2073-4360/15/9/2150removalCo(II)radionuclideMOFsion-imprinted polymerDFT calculations |
| spellingShingle | Li Yu Tu Lan Guoyuan Yuan Chongxiong Duan Xiaoqin Pu Ning Liu Synthesis and Application of a Novel Metal–Organic Frameworks-Based Ion-Imprinted Polymer for Effective Removal of Co(II) from Simulated Radioactive Wastewater Polymers removal Co(II) radionuclide MOFs ion-imprinted polymer DFT calculations |
| title | Synthesis and Application of a Novel Metal–Organic Frameworks-Based Ion-Imprinted Polymer for Effective Removal of Co(II) from Simulated Radioactive Wastewater |
| title_full | Synthesis and Application of a Novel Metal–Organic Frameworks-Based Ion-Imprinted Polymer for Effective Removal of Co(II) from Simulated Radioactive Wastewater |
| title_fullStr | Synthesis and Application of a Novel Metal–Organic Frameworks-Based Ion-Imprinted Polymer for Effective Removal of Co(II) from Simulated Radioactive Wastewater |
| title_full_unstemmed | Synthesis and Application of a Novel Metal–Organic Frameworks-Based Ion-Imprinted Polymer for Effective Removal of Co(II) from Simulated Radioactive Wastewater |
| title_short | Synthesis and Application of a Novel Metal–Organic Frameworks-Based Ion-Imprinted Polymer for Effective Removal of Co(II) from Simulated Radioactive Wastewater |
| title_sort | synthesis and application of a novel metal organic frameworks based ion imprinted polymer for effective removal of co ii from simulated radioactive wastewater |
| topic | removal Co(II) radionuclide MOFs ion-imprinted polymer DFT calculations |
| url | https://www.mdpi.com/2073-4360/15/9/2150 |
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