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Facile Preparation of Magnetic CuFeO on Sepiolite/GO Nanocomposites for Efficient Removal of Pb(II) and Cd(II) from Aqueous Solution. | LitMetric

AI Article Synopsis

  • Researchers created a CuFeO/sepiolite/graphene oxide (CFSG) nanocomposite by combining CuFeO nanoparticles with sepiolite fibers and graphene oxide using a simple one-step method.
  • The nanocomposite was analyzed using various techniques (like TEM, FTIR, SEM-EDX, XRD, and TGA) to understand its composition and stability.
  • The CFSG nanocomposite effectively removed lead (Pb(II)) from water (238.1 mg/g) more efficiently than cadmium (Cd(II)) (14.97 mg/g), and the adsorption processes were influenced by factors like pH and temperature, showing different thermodynamic behaviors for each metal.

Article Abstract

CuFeO nanoparticles were synthesized and immobilized on sepiolite fibers and graphene oxide sheets, producing a CuFeO/sepiolite/GO (CFSG) nanocomposite via a facile single-pot method. The synthesized nanocomposite was characterized using TEM, FTIR, SEM-EDX, XRD, and TGA techniques to determine its composition, structure, and thermal stability. The adsorptive removal of Pb(II) and Cd(II) heavy metal ions from aqueous solutions was studied using the synthesized CFSG nanocomposite. Adsorption parameters such as CFSG loading, pH, contact time, and temperature were investigated. The CFGS nanocomposite showed a higher Pb(II) removal ( = 238.1 mg/g) compared to Cd(II) ( = 14.97 mg/g) in a Pb(II) and Cd(II) binary system. The Pb(II) and Cd(II) adsorption fitted well with the Langmuir model, followed by the pseudo-second-order model, and was found spontaneous. Adsorption thermodynamic analysis showed that the Pb(II) adsorption process was exothermic while Cd(II) adsorption was endothermic. The CuFeO nanoparticles on the CFSG surface could facilitate the adsorption of heavy metal ions through electrostatic interaction and complexation processes.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10601063PMC
http://dx.doi.org/10.1021/acsomega.3c02006DOI Listing

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