It is crucial to fabricate cost-effective and efficient strategies for monitoring and eliminating hazardous metals in the water supplies. Among the many techniques, adsorption is one of the most powerful and facile ways for eliminating pollutants from effluents. It is also crucial to engineering high-performance low-cost adsorbents. In this regard, herein, Fe3O4@SiO2@(BuSO3H)3 as a modified core-shell magnetic silica nanoparticle embodies good selectivity to extract toxic metal ions from aquatic media. The present work investigated the removal performance of the magnetic adsorbent towards Pd2+ cation amongst the other heavy metal ions including Co2+, Pb2+, Hg2+, Cd2+, Cu2+, Zn2+ in aqueous solution. The flame atomic absorption spectrometry (FAAS) was utilized to assess the removal efficiency of the adsorbent. Several experimental parameters including elution condition, initial Pd(II) concentration, adsorbent dosage, initial pH of the solution, and contact time were explored to achieve the optimal conditions. The data of adsorption were very well with the Langmuir isotherm model, according to the adsorption isotherm mechanism experiments. In conclusion, this study lays the way for the development of novel magnetic adsorbents with high removal efficiencies for the removal of toxic metal ions from aqueous environment.

Department of Chemical Engineering Quchan University of Technology Quchan 9477177870 Iran

Department of Chemistry Faculty of Physics and Chemistry Alzahra University Tehran P O Box 1993893973 Iran

Regional Centre of Advanced Technologies and Materials Czech Advanced Technology and Research Institute Palacky University Šlechtitelů 27 783 71 Olomouc Czech Republic

School of Chemistry College of Science University of Tehran Tehran Iran

Chemosphere. 2025 Feb;370:143838. doi: 10.1016/j.chemosphere.2024.143838. PubMed

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