Synthesis of supramolecular polymers with calix[4]arene and β-cyclodextrin and their application in heavy metal ion absorption

Two categories of supramolecular polymer monomers were produced by introducing the ureidopyrimidone quadruple-hydrogen bonding assemblies on the calix[4]arene and the β-cyclodextrin host units. The adsorption capacity of these supramolecular polymers for different metal ions was investigated by stat...

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Bibliographic Details
Published in:RSC advances 2024-11, Vol.14 (48), p.35697-3573
Main Authors: Bian, Jian-Jian, Tang, Shi-Jin, Miao, Jiao, Lin, Rui, Huang, Guo-Li, Teng, Ming-Yu, Li, Xiao-Mei
Format: Article
Language:English
Subjects:
Adsorption
Cadmium
Calixarenes
Chemical bonds
Chemical synthesis
Cyclodextrins
Heavy metals
Hydrogen bonding
Lead
Molecular chains
Pollution control
Supramolecular polymers
Water pollution
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Summary:Two categories of supramolecular polymer monomers were produced by introducing the ureidopyrimidone quadruple-hydrogen bonding assemblies on the calix[4]arene and the β-cyclodextrin host units. The adsorption capacity of these supramolecular polymers for different metal ions was investigated by static adsorption. The results showed that at pH = 6 and when the adsorption equilibrium was reached, the supramolecular polymer with calixarene and β-cyclodextrin as the main body adsorbed up to 99% of Pb 2+ and Cd 2+ , respectively. Also, the supramolecular polymer connected with six carbon chains on β-cyclodextrin had better recognition of Cd 2+ and Pb 2+ , and the highest adsorption rate reached 99%. Industrial adsorbent materials from such supramolecular polymers will provide more options for water pollution control, especially for heavy metal ions. Two categories of supramolecular polymer monomers were produced by introducing the ureidopyrimidone quadruple-hydrogen bonding assemblies on the calix[4]arene and the β-cyclodextrin host units, which adsorbed up to 99% of Pb 2+ and Cd 2+ .
ISSN:2046-2069
2046-2069
DOI:10.1039/d4ra05559d