CuBi2O4/BiOBr composites promoted PMS activation for the degradation of tetracycline: S-scheme mechanism boosted Cu2+/Cu+ cycle

Simultaneous photocatalytic tetracycline oxidation and chromate reduction via a jointed synchronous pathway upon Z-scheme Bi12O17Cl2/AgBr: insight into intermediates and mechanism

“…The TC molecule was vulnerable to ˙OH at C11 and formed the incipient intermediate P1 (m/z = 459.13), which was further oxidated to P2 (m/z = 476.16) by ˙OH. 56,57 Notably, due to the coexistence and high concentration of CrIJVI) and TC, the strong oxidation of hexavalent chromium could also contribute to the ring-opening reaction of TC at the initial stage of the reaction. 58 Intermediate P2 was further oxidized at different carbon element sites.…”

Efficient Degradation of Tetracycline <i>via</i> Coupling of Photocatalysis and Photo-Fenton Processes over a 2D/2D α-Fe₂O₃/g-C₃N₄ S-scheme Heterojunction Catalyst

“…As a promising method, semiconductor photocatalysis technology can absorb optical energy to produce free radicals used for tetracycline decomposition in water [7][8][9][10][11][12][13][14][15][16][17][18][19][20] . Photocatalytic technology can degrade and mineralize organic pollutants into H2O and CO2 under a mild condition [21][22][23][24][25][26][27][28][29][30][31] . Recently, g-C3N4 received more and more in-depth research as a developed semiconductor because of its stability, special layered morphology, and favourable reduction properties.…”

Rational Design of an Efficient S-Scheme Heterojunction of CdS/Bi2WO6–S Nanocomposites for Photocatalytic CO2 Reduction

“…Upon irradiation, the presence of the internal electric field and the band bending as well as the coulombic attraction drive the recombination of useless e – in the CB of OP with h + in the VB of RP, leaving powerful e – in the CB of RP and h + in the VB of OP to take part in the redox reactions. Therefore, an efficient S-scheme heterojunction photocatalytic system is simultaneously endowed with enhanced light absorption, accelerated charge separation, and increased redox ability of charge carriers. − However, even though a variety of S-scheme heterojunction photocatalytic systems have been demonstrated, a rational selection of two semiconductors and the optimization of their interfaces to enable the formation of an efficient S-scheme heterojunction are still challenging. − …”