Abstract
We investigated the synthesis, characterization, and application of surfactant-interceded Fe nanoparticle-doped TiO2 (TiO2/Fe-S1 and TiO2/Fe-S2) that were used as adsorbents and photo-catalysts for the removal of As(V) ions from aqueous media. Two types of surfactant (anionic (sodium dodecyl sulfate), S1 and non-ionic (Triton X-100), S2) were used to obtain the separation and mono-dispersion of Fe(III) ions in the reaction solution. The nanocomposites were characterized by Fourier transform infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), UV–vis, scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM/EDX) and elemental mapping analysis before and after As(V) removal. The Langmuir capacities (qe, mg/g) of the sodium dodecyl sulfate (SDS) and Triton X-100 interceded nanocomposites (TiO2/Fe-S1 and TiO2/Fe-S2, respectively) for arsenic removal were determined to be 65.79 and 50.76mg/g, respectively, in aqueous media with As(V) concentration ranges of 0–10mg/L at pH 6.5.
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