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240208s2024 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.3c03317
|2 doi
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|a pubmed24n1284.xml
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|a DE-627
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|e rakwb
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|a eng
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|a Wang, Yubing
|e verfasserin
|4 aut
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|a Selective Adsorption Behavior of Sulfuric Acid Oxidized and Doped Conjugated Microporous Poly(aniline)s toward Lead Ions in an Aqueous Environment
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|c 2024
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|a Text
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Revised 08.02.2024
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|a published: Print-Electronic
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|a Citation Status Publisher
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|a The coexistence of lead, zinc, and copper ions in wastewater constitutes an environmental challenge of pressing concern. This research delves into the preparation of innovative oxidation-doped conjugated microporous poly(aniline) frameworks, exploring their prospective efficacy in regulating lead ion adsorption from aqueous solutions. H2SO4-CMPTA demonstrates the capability to reach adsorption equilibrium within 15 min at a lead concentration of 50 ppm. Even at a lead concentration of 20 ppm, it still efficaciously attenuates these levels to sub-10 ppb, a value surpassing extant standard. H2SO4-CMPTA retains over 78.8% adsorption efficiency after six cycles. Analytical characterization coupled with computational calculations suggests that sulfate-coordinated nitrogen cationic structure plays a crucial role in adsorption. A deeper investigation reveals the cardinal role of electrostatic attraction and exclusive chelation adsorption underpinning the efficient capture of lead ions by doped sulfate ions. Intriguingly, in a mixed heavy metal solution containing lead, zinc, and copper ions, H2SO4-CMPTA exhibits an initial predilection toward zinc ions, yet an eventual ion-exchange adsorption gravitating toward lead ions was discerned, governed by the latter's superior binding energy. Our study elucidates a promising material as an efficacious tool for the remediation of aquatic environments tainted with lead contaminants
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|a Journal Article
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|a Wu, Xiaoxi
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhou, Ziyi
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Feng, Jiangtao
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Li, Mingtao
|e verfasserin
|4 aut
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|a Chen, Jie
|e verfasserin
|4 aut
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|a Yan, Wei
|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 (2024) vom: 08. Feb.
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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|g year:2024
|g day:08
|g month:02
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|u http://dx.doi.org/10.1021/acs.langmuir.3c03317
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