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May 7, 2026ACS Omega0 citationsOpen Access

Pb(II) Adsorption on Amine-Grafted Fe3O4@MCM-41 for Wastewater Remediation

Pb(II) Adsorption on Amine-Grafted Fe 3 O 4 @MCM-41: Fast Uptake and O-Anchored Binding Revealed by DFT

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Authors

YRYuttakarn RattanachaiNBNutthaya ButwongKRKamolwan Rintramee

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Overview

Randomized trial shows effective Pb(II) adsorption in wastewater, suggesting a promising method for cleanup.

Key Points

  • This research aims to investigate the efficiency of amine-grafted Fe3O4@MCM-41 for Pb(II) adsorption in wastewater treatment.
  • Synthesis of Fe3O4@MCM-41–NH2 particles via coprecipitation and silica coating.
  • Characterized using XRD, FT-IR, TEM, and N2 sorption techniques; evaluated for Pb(II) removal under specific batch conditions.
  • Conducted DFT calculations to analyze binding mechanisms of Pb(II).
  • Achieved 94.8% Pb(II) removal in 60 minutes (qe = 21.1 mg·g–1, k2 = 0.21 mg–1·g·min–1).
  • Equilibrium data described by Langmuir and Freundlich models indicating mild site heterogeneity.
  • Demonstrated robust reusability for multicycle application.

Cite This Study

Rattanachai et al. (2026) studied this question.

synapsesocial.com/papers/69fc2c1f8b49bacb8b347cdfhttps://doi.org/10.1021/acsomega.5c12500
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