Bimetallic Coordination in Two-Dimensional Metal–Organic Framework Nanosheets Enables Highly Efficient Removal of Heavy Metal Lead (II)
Two-dimensional (2D) metal–organic frameworks (MOFs) have emerged as intriguing 2D materials because of their specific features of 2D morphology and designable skeletons, which have elicited great interest in environment remediation. In this work, 2D MOF nanosheets are fabricated via a mixed-solvent...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2021-03-01
|
| Series: | Frontiers in Chemical Engineering |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fceng.2021.636439/full |
| _version_ | 1818414174636605440 |
|---|---|
| author | Guiliang Li Guiliang Li Yang Liu Yang Liu Yi Shen Qile Fang Qile Fang Fu Liu Fu Liu |
| author_facet | Guiliang Li Guiliang Li Yang Liu Yang Liu Yi Shen Qile Fang Qile Fang Fu Liu Fu Liu |
| author_sort | Guiliang Li |
| collection | DOAJ |
| description | Two-dimensional (2D) metal–organic frameworks (MOFs) have emerged as intriguing 2D materials because of their specific features of 2D morphology and designable skeletons, which have elicited great interest in environment remediation. In this work, 2D MOF nanosheets are fabricated via a mixed-solvent solvothermal method, and a regulation strategy of metal inorganic clusters on MOFs is used to construct two different 2D MOFs with monometallic and bimetallic coordination, that is, Ni-MOF and Ni/Cd-MOF. Binary metal coordination renders more crystal defects and vacancies in the framework; thus, compared to monometallic Ni-MOF, bimetallic Ni/Cd-MOF exhibits fewer layers (4∼5 layers), higher specific surface area, larger pore size, and higher surface electronegativity, which leads to its excellent adsorption removal for Pb2+, with higher adsorption rate and affinity, and superior adsorption capacity (950.61 mg/g, almost twice as high as that of monometallic Ni-MOF). Besides, the adsorption mechanism further confirmed that the carboxyl groups (−COO−) from organic linker on 2D MOFs serve as the main binding sites for Pb2+ coordination, and bimetallic Ni/Cd-MOF has more active −COO− sites for Pb2+ capture. Thus, the bimetallic Ni/Cd-MOF regulated by heterogeneous metal atoms shows promising application for highly efficient adsorption of heavy metal ions. |
| first_indexed | 2024-12-14T11:14:54Z |
| format | Article |
| id | doaj.art-4b7575184ec440e484d0b5f238ef0d72 |
| institution | Directory Open Access Journal |
| issn | 2673-2718 |
| language | English |
| last_indexed | 2024-12-14T11:14:54Z |
| publishDate | 2021-03-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Chemical Engineering |
| spelling | doaj.art-4b7575184ec440e484d0b5f238ef0d722022-12-21T23:04:05ZengFrontiers Media S.A.Frontiers in Chemical Engineering2673-27182021-03-01310.3389/fceng.2021.636439636439Bimetallic Coordination in Two-Dimensional Metal–Organic Framework Nanosheets Enables Highly Efficient Removal of Heavy Metal Lead (II)Guiliang Li0Guiliang Li1Yang Liu2Yang Liu3Yi Shen4Qile Fang5Qile Fang6Fu Liu7Fu Liu8Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, ChinaDepartment of Chemical Science, University of Chinese Academy of Sciences, Beijing, ChinaKey Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, ChinaDepartment of Chemical Science, University of Chinese Academy of Sciences, Beijing, ChinaKey Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou, ChinaKey Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, ChinaDepartment of Chemical Science, University of Chinese Academy of Sciences, Beijing, ChinaKey Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, ChinaDepartment of Chemical Science, University of Chinese Academy of Sciences, Beijing, ChinaTwo-dimensional (2D) metal–organic frameworks (MOFs) have emerged as intriguing 2D materials because of their specific features of 2D morphology and designable skeletons, which have elicited great interest in environment remediation. In this work, 2D MOF nanosheets are fabricated via a mixed-solvent solvothermal method, and a regulation strategy of metal inorganic clusters on MOFs is used to construct two different 2D MOFs with monometallic and bimetallic coordination, that is, Ni-MOF and Ni/Cd-MOF. Binary metal coordination renders more crystal defects and vacancies in the framework; thus, compared to monometallic Ni-MOF, bimetallic Ni/Cd-MOF exhibits fewer layers (4∼5 layers), higher specific surface area, larger pore size, and higher surface electronegativity, which leads to its excellent adsorption removal for Pb2+, with higher adsorption rate and affinity, and superior adsorption capacity (950.61 mg/g, almost twice as high as that of monometallic Ni-MOF). Besides, the adsorption mechanism further confirmed that the carboxyl groups (−COO−) from organic linker on 2D MOFs serve as the main binding sites for Pb2+ coordination, and bimetallic Ni/Cd-MOF has more active −COO− sites for Pb2+ capture. Thus, the bimetallic Ni/Cd-MOF regulated by heterogeneous metal atoms shows promising application for highly efficient adsorption of heavy metal ions.https://www.frontiersin.org/articles/10.3389/fceng.2021.636439/fullbimetallictwo dimensionalmetal–organic frameworksheavy metal ion removalnanosheet |
| spellingShingle | Guiliang Li Guiliang Li Yang Liu Yang Liu Yi Shen Qile Fang Qile Fang Fu Liu Fu Liu Bimetallic Coordination in Two-Dimensional Metal–Organic Framework Nanosheets Enables Highly Efficient Removal of Heavy Metal Lead (II) Frontiers in Chemical Engineering bimetallic two dimensional metal–organic frameworks heavy metal ion removal nanosheet |
| title | Bimetallic Coordination in Two-Dimensional Metal–Organic Framework Nanosheets Enables Highly Efficient Removal of Heavy Metal Lead (II) |
| title_full | Bimetallic Coordination in Two-Dimensional Metal–Organic Framework Nanosheets Enables Highly Efficient Removal of Heavy Metal Lead (II) |
| title_fullStr | Bimetallic Coordination in Two-Dimensional Metal–Organic Framework Nanosheets Enables Highly Efficient Removal of Heavy Metal Lead (II) |
| title_full_unstemmed | Bimetallic Coordination in Two-Dimensional Metal–Organic Framework Nanosheets Enables Highly Efficient Removal of Heavy Metal Lead (II) |
| title_short | Bimetallic Coordination in Two-Dimensional Metal–Organic Framework Nanosheets Enables Highly Efficient Removal of Heavy Metal Lead (II) |
| title_sort | bimetallic coordination in two dimensional metal organic framework nanosheets enables highly efficient removal of heavy metal lead ii |
| topic | bimetallic two dimensional metal–organic frameworks heavy metal ion removal nanosheet |
| url | https://www.frontiersin.org/articles/10.3389/fceng.2021.636439/full |
| work_keys_str_mv | AT guiliangli bimetalliccoordinationintwodimensionalmetalorganicframeworknanosheetsenableshighlyefficientremovalofheavymetalleadii AT guiliangli bimetalliccoordinationintwodimensionalmetalorganicframeworknanosheetsenableshighlyefficientremovalofheavymetalleadii AT yangliu bimetalliccoordinationintwodimensionalmetalorganicframeworknanosheetsenableshighlyefficientremovalofheavymetalleadii AT yangliu bimetalliccoordinationintwodimensionalmetalorganicframeworknanosheetsenableshighlyefficientremovalofheavymetalleadii AT yishen bimetalliccoordinationintwodimensionalmetalorganicframeworknanosheetsenableshighlyefficientremovalofheavymetalleadii AT qilefang bimetalliccoordinationintwodimensionalmetalorganicframeworknanosheetsenableshighlyefficientremovalofheavymetalleadii AT qilefang bimetalliccoordinationintwodimensionalmetalorganicframeworknanosheetsenableshighlyefficientremovalofheavymetalleadii AT fuliu bimetalliccoordinationintwodimensionalmetalorganicframeworknanosheetsenableshighlyefficientremovalofheavymetalleadii AT fuliu bimetalliccoordinationintwodimensionalmetalorganicframeworknanosheetsenableshighlyefficientremovalofheavymetalleadii |