One-pot preparation of double S-scheme Bi2S3/MoO3/C3N4 heterojunctions with enhanced photocatalytic activity originated from the effective charge pairs partition and migration

Enhanced photocatalytic hydrogen evolution and ammonia sensitivity of double-heterojunction g-C3N4/TiO2/CuO

“…Studies have shown that putting CuO into the structure of TiO 2 can result in an increase in photocatalytic activity owing to the internal electric field. 22 In recent years, the S-scheme (step-scheme) 23,24 photocatalytic system was considered an interpretation to explain the result that presented to decrease the recombination rate, energy separation of generated charges and retaining excellent redox ability. Vairamuthu Raj et al 25 researched g-C 3 N 4 /TiO 2 /CuO S-scheme composites as effective photocatalysts in the field of photocatalytic degradation.…”

A review on ZnO-based S-scheme heterojunction photocatalysts

“…Therefore, the verification of the charge transfer mechanism in S-scheme heterojunctions can be achieved by detecting the maximum redox capacity of the heterojunction system. EPR is a powerful technique employed to detect unpaired electrons in photocatalytic systems [100]. Radical trapping experiment based on EPR is widely used to reveal the photocatalytic mechanism [101,102].…”

Photocatalytic Activity of S-Scheme Heterostructure for Hydrogen Production and Organic Pollutant Removal: A Mini-Review

“…The one-pot method was used to develop two g-C 3 N 4 based S-scheme heterostructures for MO and MB photocatalytic removal. A Bi 2 S 3 (E G = 1.3 eV)/MoO 3 (E G = 3.01 eV)/g-C 3 N 4 (E G = 2.63 eV) lump-like heterostructure [ 75 ] has the advantage of double S-scheme heterojunctions and an active surface area of 43.2 m 2 /g. The cumulative photogenerated electrons present in the conduction band of C 3 N 4 and Bi 2 S 3 , and the photogenerated holes will enrich in the valence band of MoO 3 .…”