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231226s2022 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.2c00681
|2 doi
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|a pubmed24n1146.xml
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|a (NLM)35878884
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|a DE-627
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|a eng
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|a Hasi, Qi-Meige
|e verfasserin
|4 aut
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| 245 |
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|a Porphyrin-Based Conjugated Microporous Polymers for Highly Efficient Adsorption of Metal Ions
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|c 2022
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 09.08.2022
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a The capture and elimination of anions and cations from water have attracted a great deal of attention and are quite vital for clean production and environmental remediation. In this work, we present the synthesis of four porphyrin (Por)-based conjugated microporous polymers (CMPs, namely, Por-CMP-1-4), which were produced through a Sonogashira-Hagihara linked response using porphyrin and acetylene aromatic compounds as building blocks and used as absorbents to eliminate metal ions from water. The as-synthesized Por-CMP-1-4 exhibit an amorphous porous structure and outstanding caloric and physicochemical properties. Taking advantage of their larger specific surface areas, i.e., 541.47, 614.58, 382.38, and 677.90 m2 g-1 for Por-CMP-1-4, respectively, and their chelating active site that originated from the porphyrin ring, Por-CMP-1-4 show better Zn2+, Cu2+, and Pb2+ adsorption ability. Among them, Por-CMP-3 has the greatest adsorbability of 640 mg g-1 for Zn2+, with an adsorption efficiency of 80%, whereas its adsorption capacities for Cu2+ and Pb2+ ions were both 334 mg g-1, with an adsorption efficiency of 42% for Cu2+ and Pb2+. Employing Por-CMP-3 as a representative example, its adsorption kinetics has been systematically investigated. The adsorption behavior of Por-CMP-3 with respect to the Zn2+ ion is shown to exhibit pseudo-first-order kinetics and Langmuir isotherm modes. Meanwhile, the adsorption mechanism is discussed in detail, and it was thought it might be chelation, in which the nitrogen atoms with a single pair of electrons on the porphyrin ring interacted with metal ions to form stable chelation coordination bonds, thus removing metal ions selectively and effectively. Furthermore, Por-CMP-3 exhibited good reusability, retaining 60% of its Zn2+ removal rate after four continuous adsorptions
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|a Journal Article
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|a Han, Zhi-Chao
|e verfasserin
|4 aut
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|a Guo, Yu-Ping
|e verfasserin
|4 aut
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| 700 |
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|a Yu, Jia-Le
|e verfasserin
|4 aut
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|a Xiao, Chao-Hu
|e verfasserin
|4 aut
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|a Zhang, Yu-Han
|e verfasserin
|4 aut
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| 700 |
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|a Chen, Li-Hua
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 38(2022), 31 vom: 09. Aug., Seite 9507-9517
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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|g volume:38
|g year:2022
|g number:31
|g day:09
|g month:08
|g pages:9507-9517
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|u http://dx.doi.org/10.1021/acs.langmuir.2c00681
|3 Volltext
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