Magnetic Fe3O4@TiO2nanocomposites to degrade bisphenol A, one emerging contaminant, under visible and long wavelength UV light irradiation
Journal
Journal of Environmental Chemical Engineering
Journal Volume
9
Journal Volume
9
Journal Issue
4
Journal Issue
4
Start Page
105539
ISSN
22133437
Date Issued
2021-08
Author(s)
Abstract
The environmentally benign Fe3O4@TiO2 heterojunction photocatalysts were fabricated to remove Bisphenol A (BPA) under visible and long wavelength UV light irradiation. To reveal the incorporation of Fe3O4 and TiO2 nanoparticles, Fe3O4@TiO2 composite was systematically characterized by XRD, Raman, FTIR, XANES and UV-Vis. Both titanium and iron were close to their highest oxidation state, and retained the magnetic properties of Fe3O4 under the high temperature calcination. Superior photocatalytic BPA degradation rate (kobs=0.0152 min-1) was recorded with 500FT, under long wavelength UV light for first 30 min. The enhanced photocatalytic activity was recorded due to the moderate iron loading, which reduced the hole-pair separation effectively, and shifted the band-gap in the visible range. In addition, the magnetic properties of Fe3O4 in 500FT, which play a crucial role in recollecting the used catalyst from environment, greatly promotes the practical applications of Fe3O4@TiO2 photocatalyst. This study provides an understanding of facile synthesis and characteristics of low-cost materials for wastewater treatment.
Subjects
BPA degradation
Fe3O4@TiO2
Photocatalyst
Visible light driven
XANES analysis
SDGs
Publisher
Elsevier Ltd
Type
journal article