Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/34519
Title: Photocatalytic treatment of 2,4,6-trinitotoluene in red water by multi-doped TiO2 with enhanced visible light photocatalytic activity
Authors: Zhang, Y
Cheng, K
Lv, F
Huang, H
Fei, B 
He, Y
Ye, Z
Shen, B
Keywords: Red water
Multi-doped TiO2
Photocatalytic
Visible light
Issue Date: 2014
Publisher: Elsevier
Source: Colloids and surfaces A : physicochemical and engineering aspects, 2014, v. 452, p. 103-108 How to cite?
Journal: Colloids and surfaces A : physicochemical and engineering aspects
Abstract: Fe-N-doped TiO2, Fe-S-doped TiO2 and Fe-N-S-doped TiO2 were prepared with Fe doping peroxotitanium complex (Fe-PTC) as precursor in aqueous solution by a low-temperature process. The structure and properties of catalysts were characterized by XRD, FT-IR, XPS, TEM and UV–Vis respectively. Fe-N-doped TiO2, Fe-S-doped TiO2 and Fe-N-S-doped TiO2 all belong to anatase phase. The UV–Vis spectra of doped TiO2 exhibited a red shift to 535 nm and stronger absorption than that of pure TiO2 in visible region. The pure TiO2 displays bullet-like morphology with widths of about 20 nm and Fe-N-S-doped TiO2 consisted of irregular particles with diameters about 5–10 nm. The doped samples all exhibited higher photocatalytic activity in the degradation of 2,4,6-trinitotoluene (TNT) in red water compared to pure TiO2. Fe-N-S-doped TiO2 presented the highest photocatalytic activity and degraded about 91.5% 2,4,6-trinitotoluene within 12 h under visible light irradiation. Structural characterization and property analysis results revealed that the co-doping of Fe-N, Fe-S and Fe-N-S remarkably altered the crystal specific surface area, microstructure, as well as the photocatalytic activity.
URI: http://hdl.handle.net/10397/34519
ISSN: 0927-7757 (print)
DOI: 10.1016/j.colsurfa.2014.03.086
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