Coprecipitation Synthesis of Fe-Doped TiO2 from Various Commercial TiO2 for Photocatalytic Reaction

Abstract

The current work reports the synthesis of Fe-doped TiO 2 nanoparticles by simple coprecipitation method and compares their photocatalytic efficiency to three different commercially available TiO 2 (i.e., Sachtopore, Hombikat UV100 and Fluka) using methyl orange (MO) under UV light irradiation. X-ray diffraction (XRD), diffuse reflectance spectroscopy (DRS) and transmission electron microscopy (TEM) were used to characterize these synthesized Fe-doped TiO 2 nanoparticles. In fact, the DRS results revealed that the bandgap of doped photocatalysts is smaller compared to undoped TiO 2 , leading to a slight shift in the absorption band towards the beginning of the visible light. In addition, XRD has shown that all samples were well crystallized and have only anatase phase. Accordingly, the photocatalytic investigation revealed that doped TiO 2 exhibited improved photocatalytic efficiency of methyl orange (MO) compared to undoped TiO 2 photocatalysts and depends on iron constituents, TiO 2 types as well as the doses of synthesized nanomaterials. Article Highlights• A simple coprecipitation method for the synthesis of Fe-doped TiO 2 photocatalysts and comparison of their photocatalytic efficiency to undoped TiO 2 .• All Fe-doped TiO 2 showed smaller bandgap compared to undoped TiO 2 with only anatase phase.• Fe-doped TiO 2 improves the photocatalytic degradation of dyes compared to undoped TiO 2 .• Photocatalytic efficiency of these doped TiO 2 depends on their doses, the constituents of iron and TiO 2 types.

Enhanced Fe-TiO2 Solar Photocatalysts on Porous Platforms for Water Purification

“…Microwave irradiation is a highly appealing method, which has been employed in several studies for its simplicity, homogeneous and fast heating, cost-effectiveness, selective heating, and facility of reaction scale-up [ 13 , 48 , 49 , 50 , 51 , 52 ]. Although several studies on the synthesis of Fe-doped TiO 2 are reported in the literature, most of them employed methods that involve a considerable amount of time and a calcination step, which typically requires the use of high temperatures [ 53 , 54 , 55 , 56 , 57 ]. Regarding the microwave irradiation method, few studies have focused on a fast Fe-TiO 2 microwave synthesis without the need to calcinate the samples; the approach developed in this study.…”

Synthesis and Characterization of Iron-Doped TiO2 Nanotubes (Fe/TiNTs) with Photocatalytic Activity

“…Their product exhibits a remarkably high photocatalytic capacity to evolve hydrogen, to an extent of 850 mmol/5 mg within 40 min. Next to these examples, a large number of other publications have published on the doping of TiO 2 nanoparticles [9][10][11][12][13][14][15][16][17][18][19][20].…”