g-C3N4/TiO2 S-scheme heterojunction photocatalyst with enhanced photocatalytic Carbamazepine degradation and mineralization

3D chrysanthemum-like g-C3N4/TiO2 as an efficient visible-light-driven Z-scheme hybrid photocatalyst for tetracycline degradation

“…However, too much C 3 N 4 may reduce the availability of catalytic active sites, and become the center of recombination at which most photogenerated electrons and holes could recombine with each other and leave only a small part of charges participates in the photodegradation of tetracycline. 39,42–44…”

“…According to empirical eqn (1) and (2): E VB = χ − E e + 1/2 E g E CB = E VB – E g where E CB represents the conduction band energy, E VB represents the valence band energy, E g represents the band gap and E e represents the energy of free electrons on the hydrogen scale (4.5 eV vs. NHE). 43,44 The χ represents semiconductor electronegativity, which is 5.81 eV for TiO 2 and 4.73 eV for g-C 3 N 4 .…”

“…However, too much C 3 N 4 may reduce the availability of catalytic active sites, and become the center of recombination at which most photogenerated electrons and holes could recombine with each other and leave only a small part of charges participates in the photodegradation of tetracycline. 39,[42][43][44] In addition to the photocatalytic performance, the stability of the photocatalyst was also evaluated, and the results are given in Fig. S3A (ESI †).…”

A Novel Photocatalytic Functional Coating Applied to the Degradation of Xylene in Coating Solvents under Solar Irradiation

“…This phenomenon demonstrates an increase in Ti 3+ [ 48 ], indicating the introduction of Ti 3+ by DBD treatment. As shown in Figure 7 e, the N1s spectra show three peaks at binding energies of 398.25, 400.06, and 401.18 eV, which may correspond to C-N=C [ 49 ], N-(C) 3 , and C-N bonds [ 50 , 51 ], respectively, further demonstrating the existence of g-C 3 N 4 .…”

Photocatalytic Degradation of Inherent Pharmaceutical Concentration Levels in Real Hospital WWTP Effluents Using g-C3N4 Catalyst on CPC Pilot Scale Reactor

“…Zhong et al [ 11 ] studied the photocatalytic degradation of carbamazepine under simulated solar irradiation using g-C 3 N 4 in spiked real wastewater effluent collected from a full-scale WWTP located in Brisbane, Queensland, Australia, and they reported 100% degradation of carbamazepine after 15 min. In addition, Kane et al [ 12 ] studied the photodegradation of carbamazepine using g-C 3 N 4 under UV light irradiation. Gao et al [ 13 ] studied the removal efficiency of amoxicillin in real hospital wastewater and in a wastewater treatment plant, using a composite g-C 3 N 4 -based photocatalytic material, Ag/TiO 2 /M-g-C 3 N 4 .…”