Enhancing the photocatalytic oxidation of dibenzothiophene using visible light responsive Fe and N co-doped TiO 2 nanoparticles

Effects of Ag0-modification and Fe3+-doping on the structural, optical and photocatalytic properties of TiO2

“…Some researchers believe that reduction in grain size will lead to an increase in specic surface area. 48,51 In our work, the grain size of TiO 2 is reduced by Ag or Fe modication, which is proved by XRD results, however, 1% Fe-TiO 2 and 1% Ag/1% Fe-TiO 2 possess smaller specic surface areas than pure TiO 2 . Wang et al 52 and Adyani et al 22 are convinced that the specic surface area of TiO 2 is largely related to agglomeration degree.…”

“…15,16,34,36,37 On the other hand, the substitutions of Ti 4+ ions with Fe 3+ ions form impurity energy levels between the conduction band and valence band in the forbidden band, thereby decreasing the E g . 5,7,10,21,33,43,51 Therefore, the change of E g is not the main reason for the decreased photocatalytic performance of Fe-TiO 2 and 1% Ag/1% Fe-TiO 2 .…”

Combining the Photocatalysis and Absorption Properties of Core-Shell Cu-BTC@TiO2 Microspheres: Highly Efficient Desulfurization of Thiophenic Compounds from Fuel

“…In the case of Cu-BTC@TiO 2 , the asymmetrical O 1s region could be deconvoluted into two peaks at 532.4 and 530.0 eV. The first peak was also associated with O 2− ions in the Cu-BTC, whereas the second peak was related to Ti-O bonds in TiO 2 on the basis of other XPS results on TiO 2 [41,42]. But the binding energies of pure TiO 2 at 529.5 eV which decreased 0.5 eV in comparison with the binding energies of Cu-BTC@TiO 2 .…”

Fe-TiO2 Nanoparticles Synthesized by Green Chemistry for Potential Application in Waste Water Photocatalytic Treatment

“…Hence, the utilization of sustainable luminous energy like visible light or sunlight is limited, because TiO 2 can only be excited by ultraviolet light (wavelength lower than 387 nm), which occupies only 3-5% of the entire solar spectrum [5][6][7][8][9][10][11]. It is also known that high recombination of activated electron-hole pair of TiO 2 is still its major drawback that causes the restriction of practical applications, in particular, solar harvesting aspect [10,12,13]. us, many approaches have been devoted to improve the light response of TiO 2 in the visible light region.…”