Magnetic Carbon Porous Polymer Prepared from a New Suspended Emulsion for the Absorption of Heavy Metal Ions

In this study, magnetic carbon nanopolymers (Fe O /C@PM) were synthesized by suspension polymerization using magnetic carbon nanoparticles as the matrix, 2-thiophene formaldehyde and acrylamide as the monomers, and ethylene glycol dimethacrylate (EGDMA) as the crosslinking agent. The obtained materi...

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Bibliographic Details
Published in:Polymers 2025-01, Vol.17 (3), p.257
Main Authors: Wei, Shoulian, Huang, Shenwei, Zhou, Jun, Xiao, Chun, Cao, Jiangfei, Xiao, Jibo, Xie, Chunsheng
Format: Article
Language:English
Subjects:
Acrylamide
Activated carbon
Adsorbents
Adsorption
Aqueous solutions
Cadmium
Carbon
Crosslinking
Efficiency
Emulsion polymerization
Ethylene glycol
Functional groups
Glycol dimethacrylates
Heavy metals
Infrared analysis
Iron oxides
Nanomaterials
Nanoparticles
Nitrates
Polymers
Polyvinyl alcohol
Power supply
Sodium
Suspension polymerization
Thermogravimetric analysis
Wastewater treatment
Water
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Summary:In this study, magnetic carbon nanopolymers (Fe O /C@PM) were synthesized by suspension polymerization using magnetic carbon nanoparticles as the matrix, 2-thiophene formaldehyde and acrylamide as the monomers, and ethylene glycol dimethacrylate (EGDMA) as the crosslinking agent. The obtained material was characterized using multiple techniques, including scanning electron microscopy (SEM), infrared spectroscopy (FTIR), X-ray diffraction (XRD), N adsorption-desorption, and thermogravimetric analysis (TGA). The adsorption effects of Zn , Cd , and Pb in the mixed solution were evaluated using magnetic carbon nanoparticles (Fe O /C) and Fe O /C@PM as adsorbents. The adsorption isotherms, kinetic models, and cyclic regeneration of various metal ions, including Zn , Cd and Pb , were studied. The results showed that the Fe O /C@PM maintained a slightly aggregated spherical morphology similar to Fe O /C and exhibited excellent adsorption capacity for all of Zn , Cd , and Pb , with maximum adsorption capacities of 343.3, 250.7, and 177.6 mg·g , respectively. The adsorption mechanisms were mainly based on the chemical interactions between metal ions and functional groups on the surface of polymers. The kinetic study revealed that the adsorption process followed a pseudo-second-order kinetic model. When Fe O /C@PM was reused five times, its adsorption rates for Zn , Cd , and Pb remained above 81%, indicating its great potential for the treatment of wastewater containing Zn , Cd , and Pb .
ISSN:2073-4360
2073-4360
DOI:10.3390/polym17030257