Fabrication of nitrogen-doped TiO2 monolith with well-defined macroporous and bicrystalline framework and its photocatalytic performance under visible light

Structural characterization of N-doped anatase–rutile mixed phase TiO2 nanorods assembled microspheres synthesized by simple sol–gel method

“…The introduction of nitrogen in the TiO 2 lattice structure led to the capability to absorb higher fraction of photons from the visible region [21,22]. Furthermore, compared to the previous study, the uses of HNO 3 as nitrogen doping sources significantly improved the absorbance under visible irradiation [11]. The same finding can also be found in a study conducted by Zhang et al [17].…”

“…Recently, many studies have been conducted to improve the photoabsorption features of TiO 2 under UV and visible light irradiation [11,12]. However, to the best of our knowledge, there is hardly a report on the preparation of nitrogen doped anatase-rutile mixed phase TiO 2 nanostructures [13,14].…”

“…Therefore, it would be interesting to prepare doped anatase-rutile mixed-phase TiO 2 nanostructure with high photocatalytic activity under UV and visible light irradiation. The substitution with nitrogen doping in TiO 2 lattice structure is particularly effective to narrow the band gap of TiO 2 , as well as to provide high photocatalytic activity under visible light irradiation [11].…”

Photodegradation of phenol by N-Doped TiO2 anatase/rutile nanorods assembled microsphere under UV and visible light irradiation

“…The substitution of lattice oxygen via nitrogen doping in TiO 2 lattice crystals leads to narrowed band gap and facilitated visible light absorption capability [14]. On top of that, nitrogen doping also inhibited the recombination of the photoinduced carriers and therefore increased the quantum efficiency of TiO 2 photocatalyst [11,14,18]. Basically, this approach has expanded the versatility of TiO 2 photocatalyst in a broader range of UV and visible regions.…”

UVA- and visible-light-driven photocatalytic activity of three-layer perovskite Dion-Jacobson phase CsBa2M3O10 (M=Ta, Nb) and oxynitride crystals in the removal of caffeine from model wastewater

“…To effectively utilize the whole spectrum of the solar light, several approaches have been demonstrated. For instance, visible-light-driven photocatalytic activity of TiO2 was enhanced by doping [18,[22][23][24]. Among other photocatalysts, ZnO [16,25] and perovskites have also been widely applied.…”