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Jin WL, Ji X, Hou XL, Ji SY, Li W, Yu X, Liu XW, Zhu LN, Jiang HX, Kong DM. Porphyrin COF and its mechanical pressing-prepared carbon fiber hybrid membrane for ratiometric detection, removal and enrichment of Cd 2. J Hazard Mater 2022; 439:129574. [PMID: 35853339 DOI: 10.1016/j.jhazmat.2022.129574] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 06/03/2022] [Accepted: 07/08/2022] [Indexed: 06/15/2023]
Abstract
A nitrogen (N), oxygen (O)-rich porphyrin-based covalent organic framework (COF), in which interlayer porphyrin molecules are vertically stacked, is prepared and characterized. As-prepared N,O-rich TpTph COF shows a high adsorption capacity for Cd2+ due to the abundant coordination sites. More interesting, it is found that the formation of COF enlarges the porphyrin ring center space, thus facilitating the Cd2+coordination, and the resulting optical signal changes make the ratiometric detection of Cd2+ possible. Furthermore, using carbon fiber (CF) filaments, which are obtained from low cost and easy-to-obtain actived carbon mask, as support, porphyrin COF-based CF@TpTph membrane is prepared through in-situ growth of COF on the support followed by simple mechanical pressing. The CF@TpTph membrane is demonstrated to work well for both Cd2+ removal and enrichment from soil and water samples, and shows the advantages of ease of handling, robust stability, reduced secondary pollution risk to samples, and good reusability. This work provides a powerful tool for Cd2+ removal and enrichment, exhibits that preparing porphyrin-based COFs is a feasible way to promote the interactions between porphyrin ring and Cd2+, and demonstrates that mechanical pressing is a promising strategy for the design of COF-based monolithic materials to promote the practical applications of COFs.
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Affiliation(s)
- Wei-Liang Jin
- Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China
| | - Xuan Ji
- Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China
| | - Xin-Long Hou
- Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China
| | - Shi-Yu Ji
- Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China
| | - Wei Li
- Tianjin Key Laboratory of Biosensing and Molecular Recognition, College of Chemistry, Nankai University, Tianjin 300071,China
| | - Xi Yu
- Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China
| | - Xiao-Wei Liu
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China
| | - Li-Na Zhu
- Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China.
| | - Hong-Xin Jiang
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China.
| | - De-Ming Kong
- Tianjin Key Laboratory of Biosensing and Molecular Recognition, College of Chemistry, Nankai University, Tianjin 300071,China.
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