期刊
REACTIVE & FUNCTIONAL POLYMERS
卷 180, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.reactfunctpolym.2022.105409
关键词
Chelating resin; Wastewater treatment; Adsorption; Heavy metal ions; Catalytic
In this study, a novel chelating resin containing bis Schiff base was synthesized and used for the adsorption of heavy metal ions in wastewater. The results showed excellent adsorption selectivity and reusability of the resin.
A novel CPS-AA chelating resin containing bis Schiff base was prepared by the CPS with synthetic small mo-lecular ligands. It has been used for the adsorption of heavy metal ions in wastewater. Ft-IR spectroscopy and the 1H NMR spectrum proved the successful synthesis of Schiff base structure on the chelating resin. The results of adsorption experiments showed the maximum adsorption capacities for Cu (II), Pb (II) and Ni (II) were 3.74, 1.02, and 2.87 mmol/g respectively. The adsorption condition experiment proves that the material has excellent adsorption selectivity and reusability. The possible chelation mechanism was inferred to be four-tooth coordi-nation, which is beneficial to the stretching of molecular chain and increases the adsorption capacity and sta-bility of heavy metal ions. Finally, Cu-adsorbed composites (CPS-AA-Cu) were used as catalysts to explore the reduction and removal of 4-NP in an aqueous solution, and the results showed excellent catalytic performance.
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