Au(III) Extraction from Water Samples Using Triazole‐Coated Novel Magnetic Adsorbents and Analysis by Inductively Coupled Plasma‐Optical Emission Spectroscopy
Celal Caner, Miraç Salpat, Salma Tabassum, Nuray Canikoglu, Huseyin Altundag
TL;DR
Researchers developed magnetic nanoparticles to efficiently extract gold ions from water, using a method optimized for accuracy and speed.
Contribution
A novel triazole-coated magnetic adsorbent is introduced for selective and efficient Au(III) extraction from water samples.
Findings
Fe3O4@SiO2@CPTES@DAT nanoparticles effectively recover Au(III) at pH 2 with 10 mg adsorbent and 20 min contact time.
The method aligns with Freundlich isotherm and pseudo-second-order kinetic models for adsorption.
The technique achieved a detection limit of 0.019 μg L−1 for Au(III) quantification using ICP-OES.
Abstract
In the present investigation, the synthesis, characterization, and application of triazole‐coated novel magnetic nanoparticles (MNPs) are systematically carried out, focusing on their efficacy as adsorbents for extracting Au(III) ions. The synthesis process involves the sequential coating of magnetite nanoparticles with tetraethylorthosilicate (SiO2), 3‐chloropropyltriethoxysilane (CPTES), and 3,5‐diamino‐1,2,4‐triazole (DAT). The MNPs synthesized at each stage are analyzed using high‐resolution transmission electron microscopy (HRTEM), field emission scanning electron microscopy (FESEM), energy‐dispersive X‐ray analysis (EDX), X‐ray diffraction (XRD), Fourier transform infrared spectroscopy (FT‐IR), and thermogravimetric and differential thermal analysis (DT/TGA) to confirm the successful coating of the desired adsorbent. Fe3O4@SiO2@CPTES@DAT MNPs selectively recover Au(III) ions under…
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Taxonomy
TopicsAnalytical chemistry methods development · Electrochemical Analysis and Applications · Extraction and Separation Processes