(2020) Environmentally friendly synthesis of Fe2O3@SiO2 nanocomposite: characterization and application as an adsorbent to aniline removal from aqueous solution. Environmental Science and Pollution Research. pp. 9181-9191. ISSN 0944-1344
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Abstract
Silica-based nanocomposite syntheses employ many harmful substances, which, in turn, demand the development of new synthetic environmental-friendly routes that meet the principles of green chemistry. In this work, we present a novel magnetic adsorbent, Fe2O3@SiO2 nanocomposite (Fe@SiNp), successfully obtained without surfactant, employing an electrochemical method. We characterized the nanocomposite and then applied it to remove aniline from the water medium. Characterization was carried out by vibrating-sample magnetometry (VSM), X-ray diffraction (XRD), scanning electron microscopy (SEM), and Fourier transform infrared spectroscopy (FT-IR). The parameters to the adsorptive removal of aniline were successfully optimized, which made possible to remove 71.04 +/- 0.06 (126.6 +/- 2.0 mg/g) from a 100 mg/L aniline solution at pH 6 and 323 K, by employing around 50 mg of Fe@SiNp, at a contact time of 40 min. The adsorption of aniline by Fe@SiNp is a spontaneous and exothermic process according to the pseudo-second-order kinetic model (r(2) = 1 at 20 mg/L aniline concentration) and the Freundlich isotherm model (r(2) = 0.9986).
Item Type: | Article |
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Keywords: | Magnetic nanoparticle synthesis Green chemistry Electrochemical synthesis Adsorption granular activated carbon bovine serum-albumin magnetite nanoparticles heavy-metals physical-characterization oxide nanoparticles waste-water adsorption degradation kinetics Environmental Sciences & Ecology |
Divisions: | |
Page Range: | pp. 9181-9191 |
Journal or Publication Title: | Environmental Science and Pollution Research |
Volume: | 27 |
Number: | 9 |
Identification Number: | 10.1007/s11356-019-07491-y |
ISSN: | 0944-1344 |
Depositing User: | مهندس مهدی شریفی |
URI: | http://eprints.zbmu.ac.ir/id/eprint/3494 |
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