Synthesis of g-C3N4/TiO2 with enhanced photocatalytic activity for H2 evolution by a simple method

Photocatalytic decomposition of N2O over TiO2/g-C3N4 photocatalysts heterojunction

“…In case of the TiO 2 /g-C 3 N 4 photocatalysts their PL intensities decreased in the order g-C 3 N 4 > TiO 2 /g-C 3 N 4 (1:6) > TiO 2 /g-C 3 N 4 (1:4) > TiO 2 /g-C 3 N 4 (1:2) > TiO 2 which agrees with observations of other authors [13,18,43,44]. This phenomenon can be explained by separation of photoinduced electrons between g-C 3 N 4 and TiO 2 structures via their heterojunctions.…”

Photocatalytic performances of g-C3N4 based catalysts for RhB degradation: Effect of preparation conditions

“…An abrupt decrease in the activity is even observed when the mass ratio is further increased to 2:1. The change of activity with the mass ratio indicates that there should be a synergistic effect between g-C 3 N 4 and TiO 2 that contributes to the reaction, such as the transfer of photo-induced electrons from g-C 3 N 4 to TiO 2 [50][51][52][53]. At the beginning, the amount of g-C 3 N 4 acting as active site of RhB degradation is few, and the synergistic effect between g-C 3 N 4 and M a n u s c r i p t 13 TiO 2 is weak.…”

“…The highest activity of g-C 3 N 4 /TiO 2 catalyst could be that it has the best ability for visible light absorption as observed in Figure 1D, and/or there is a better synergistic effect between them for the separation of holes and photoelectrons, as observed in Figure 5. Many authors have reported that improved photocatalytic activity of g-C 3 N 4 /TiO 2 composites can be obtained relative to the respective TiO 2 and g-C 3 N 4 , and the mechanism is suggested to be due to A c c e p t e d M a n u s c r i p t 15 the sufficient separation of electrons from the holes, by transferring the photo-induced electrons from g-C 3 N 4 to TiO 2 [30,31,[50][51][52][53], supporting our observations. The best activity obtained from g-C 3 N 4 /TiO 2 suggests that the electron transfer from g-C 3 N 4 to TiO 2 is more matched than that to other oxides such as MgO, SiO 2 and Al 2 O 3 .…”

Can environmental pharmaceuticals be photocatalytically degraded and completely mineralized in water using g-C3N4/TiO2 under visible light irradiation?—Implications of persistent toxic intermediates

“…Nevertheless, most of these works had mainly focused on using g-C 3 N 4 /TiO 2 composite as a catalyst under visible light irradiation to produce H 2 [28,29] or to degrade common organics, such as dye [30][31][32], phenol [33,34], formaldehyde [35], or dibenzothiphene [36]. To date, there has been little research into the photocatalytic decontamination ability of g-C 3 N 4 /TiO 2 and its mineralization mechanism for EOCs in water, especially for the decomposition of pharmaceuticals.…”