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 |
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Hauptverfasser: | , , , , , , , , , |
Format: | Artikel |
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. |
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ISSN: | 2045-2322 |