TiO2 mesocrystal with nitrogen and fluorine codoping during topochemical transformation: Efficient visible light induced photocatalyst with the codopants

Graphitic-C3N4 hybridized N-doped La2Ti2O7 two-dimensional layered composites as efficient visible-light-driven photocatalyst

“…N-doping does not change the sheet-like structure of LTO (Fig. 2b), which is attributed to the topochemical transformation between surface atoms of LTO crystals suspended in a liquid phase and TEOA molecular species in solution under hydrothermal condition [36][37][38]. The EDS analysis in Fig.…”

“…On the other hand, the shorter lifetime of 3 = 496 ps was detected for g-C 3 N 4 /NLTO than for NLTO, indicating the fast charge transfer from CB electrons of g-C 3 N 4 to CB of NLTO [39]. The time profile of the transient adsorption at 900 nm for pristine LTO under visible laser irradiation is not discussed here, because it is probably resulted from unknown impurities [36]. Under the UV laser irradiation at 320 nm, LTO showed three decay profiles with lifetimes of 5.1 ps ( 1 ), 55 ps ( 2 ), and 463 ps ( 3 ) (Fig.…”

Anatase TiO2 Mesocrystals: Green Synthesis, In Situ Conversion to Porous Single Crystals, and Self‐Doping Ti3+ for Enhanced Visible Light Driven Photocatalytic Removal of NO

“…Very recently, apart from the rational design of bare anatase TiO 2 mesocrystals, emerging research interest has also been drawn to the modification of anatase mesocrystals, to seek further improvements in performance for various applications . For example, anatase TiO 2 mesocrystals were successfully modified with noble metals, carbon materials, or metal sulfides to extend the light adsorption spectrum of the materials to the visible‐light region and hamper the photogenerated electron‐hole recombination; the resultant architectures were demonstrated to exhibit reasonably high photoactivity or photoelectrochemical capability under visible/stimulated solar light irradiation.…”

Band gap and morphology engineering of TiO2 by silica and fluorine co-doping for efficient ultraviolet and visible photocatalysis

“…It was found that the degradation of RhB over Si-F codoped TiO 2 with different Si/Ti molar ratios obeyed pseudo-first-order kinetics, which allows quantification of photocatalytic activity using the apparent rate constants (K.min −1 ), as presented in Fig.7e. Band gaps and photocatalytic performance of doped TiO 2 materials reported by other researchers [16,17,18,38,54,55] are summarized in Table 4 and Table 5 for comparisons. The highest degradation rate of RhB was obtained at R of 10%, and then decreased.…”

“…It is well-known that doping of TiO 2 with transition-metal elements demonstrates obvious shifts in the light absorption [13][14][15]. Another approach employed to narrow the band gap of TiO 2 is to replace lattice oxygen with anionic dopant species, such as N [17][18][19][20][21], F [22][23][24][25][26], C [27,28], S [29], Si [30][31][32]. Another approach employed to narrow the band gap of TiO 2 is to replace lattice oxygen with anionic dopant species, such as N [17][18][19][20][21], F [22][23][24][25][26], C [27,28], S [29], Si [30][31][32].…”