Synthesis and enhanced photocatalytic activity of Zr-doped N-TiO2 nanostructures

Novel magnetic nanocomposites containing quaternary ferrites systems Co0.5Zn0.25M0.25Fe2O4 (M = Ni, Cu, Mn, Mg) and TiO2-anatase phase as photocatalysts for wastewater remediation under solar light irradiation

“…The wavelength of the absorption edge was determined by extrapolating the sharply rising and horizontal portion of the UV-vis curve and defining the edge as the wavelength of the intersection [48]. The calculated band gap energy of 3.28 eV (Eg = 378 nm) is in good agreement with the literature reports for anatase nanoparticles [37,47]. No absorption has been observed above 400 nm indicating that in this form, the anatase nanoparticles are not active in the visible light region.…”

“…Literature reports indicate that pure anatase TiO2 exhibits an absorption band in the range of 250-350 nm [46,47] which is also observed for the as-prepared TiO2 nanoparticles (figure 5-green curve). The wavelength of the absorption edge was determined by extrapolating the sharply rising and horizontal portion of the UV-vis curve and defining the edge as the wavelength of the intersection [48].…”

Growth of Zr/N-codoped TiO2 nanorod arrays for enhanced photovoltaic performance of perovskite solar cells

“…In contrast, when the content of Zr was higher than its optimal level, Zr impurity energy level would be a recombination center, which could increase the recombination of photoinduced carriers. 14,20 Table 1 shows the photovoltaic parameters of the solar cells based on un-doped TiO 2 , 1% N-TiO 2 , and 1% Zr/N-TiO 2 NRs.…”

“…Recently, theoretical calculations and experimental data have demonstrated that the recombination rate of photogenerated carriers in TiO 2 can be further reduced by metal and nonmetal co-doping, such as Zr/N co-doping. [13][14][15][16] The Zr/N co-doping TiO 2 could enhance the energy conversion efficiency of dye-sensitized solar cells (DSSCs), narrow the band gap, and improve the absorption in visible light range. 16 However, there are no reports on the applications of Zr/N codoping TiO 2 in perovskite solar cells until now.…”

Microstructural and optical properties of rare earth ions doped TiO2 for potential white LED applications

“…Doping of RE ion indicated exceptionally encouraging outcomes as for improvement of photograph reactivity of TiO 2 . Recently, it was reported that by doping noble metals or transition metals in the TiO 2 matrix alter the surface absorption properties and improve the photocatalytic activity to a greater extend [9,10]. Moreover, TiO 2 as a host material for doping metal ions have attracted lot of interest in order to achieve excellent luminescence behavior and photocatalytic activity [11].…”