Bilayer-Coated Magnetite Nanoparticles as Magnetic Adsorbents for Efficient Paraquat Removal.

ABSTRACT: The environmental persistence and acute toxicity of paraquat (PQ²⁺) highlight the urgent need for efficient and reusable adsorbents for water remediation. In this study, linoleic acid (LA)- and palmitic acid (PA)-coated magnetite nanoparticles (Fe₃O₄@LA and Fe₃O₄@PA) were synthesized via a continuous-flow coprecipitation process to form bilayer structures. Structural analyses (TEM, XRD, FTIR, TGA, BET, and VSM) confirmed successful bilayer coating and preserved superparamagnetic properties, ensuring easy magnetic recovery. Batch adsorption experiments revealed that Fe₃O₄@LA exhibited a maximum Langmuir capacity (Q _max) of 14.8 ± 0.4 mg g^-1, outperforming Fe₃O₄@PA

SUBMITTER: Kruanetr S 

PROVIDER: S-EPMC12824769 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature