Synthesis of MgAC-Fe 3 O 4 /TiO 2 hybrid nanocomposites via sol-gel chemistry for water treatment by photo-Fenton and photocatalytic reactions

MgAC-Fe O /TiO hybrid nanocomposites were synthesized in different ratios of MgAC-Fe O and TiO precursor. X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray fluorescence spectrometry (XRF), electron spin resonance spectrometry (ESR), Brunauer-E...

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Veröffentlicht in:Scientific reports 2019-08, Vol.9 (1), p.11855
Hauptverfasser: Bui, Vu Khac Hoang, Park, Duckshin, Pham, Tuyet Nhung, An, Yejin, Choi, Jin Seok, Lee, Hyun Uk, Kwon, Oh-Hyeok, Moon, Ju-Young, Kim, Ki-Tae, Lee, Young-Chul
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Sprache:eng
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Zusammenfassung:MgAC-Fe O /TiO hybrid nanocomposites were synthesized in different ratios of MgAC-Fe O and TiO precursor. X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray fluorescence spectrometry (XRF), electron spin resonance spectrometry (ESR), Brunauer-Emmett-Teller (BET), photoluminescence (PL), and UV photoelectron spectroscopy (UPS) were used to characterize the nanocomposites. The increase of MgAC-Fe O , in the hybrid nanocomposites' core-shell structure, led to the decrease of anatase TiO peaks, thus reducing the photo-Fenton and photocatalytic activities. According to the obtained data, MgAC-Fe O [0.05 g]/TiO showed the best photo-Fenton and photocatalytic activities, having removed ~93% of MB (photo-Fenton reaction) and ~80% of phenol (photocatalytic reaction) after 20 and 80 mins, respectively. On the pilot scale (30 L), MgAC-Fe O [0.05 g]/TiO was completely removed after 27 and 30 hours by the photo-Fenton and photocatalytic activities, respectively. The synergistic effect gained from the combined photo-Fenton and photocatalytic activities of Fe O and TiO , respectively, was credited for the performances of the MgAC-Fe O /TiO hybrid nanocomposites.
ISSN:2045-2322