Photocatalytic degradation of ammonium dinitramide over novel S-scheme g-C3N4/BiOBr heterostructure nanosheets

Enhancing solar-to-hydrogen efficiency with an S-scheme GaTe/PtS2 van der Waals heterojunction with high light absorption

“…21 In addition, there are many S-scheme heterojunctions constructed in other experiments, such as g-C 3 N 4 /BiOBr, g-C 3 N 4 /TiO 2 /CuO, TiO 2 /g-C 3 N 4 , Co 3 S 4 /Mo 2 S 3 , etc. 22–25…”

Fabrication of 2D/2D BiOBr/g-C3N4 with efficient photocatalytic activity and clarification of its mechanism

“…Thus, if BiOBr/g-C 3 N 4 adopts the band-band transfer, O 2 À and OH could not be formed. On the other hand, the Z-scheme mechanism 21,35,37,41 and the S-scheme mechanism 42,43 have also been reported. However, the solid experimental evidence needs to be further verified deeply and comprehensively, especially combining theoretical calculations with in situ X-ray photoelectron spectrometry (in situ XPS).…”

“…For instance, BiOBr/g-C 3 N 4 heterostructure has been widely reported for pollutant degradation due to its good photocatalytic activity and stability. 17–43 However, the separation and transfer mechanism of photoexcited electrons and holes is a controversial issue. For example, some references 17,24,31 reported that the enhanced photocatalytic activity of BiOBr/g-C 3 N 4 is attributed to the band–band transfer mechanism (the photoexcited electrons on the CB of g-C 3 N 4 are transferred into the CB of BiOBr, and the photoexcited holes on the VB of BiOBr are transferred into the VB of g-C 3 N 4 ).…”

Construction of direct Z-scheme BiOBr/CuI heterojunction for boosting photocatalytic degradation of phenol

“…20,21 Many studies have demonstrated that photogenerated electrons and holes can be effectively separated by constructing heterojunctions with other semiconductors, thereby improving the catalytic performance of photocatalysts. For example, AgBr, 22,23 g-C 3 N 4 , 24,25 Bi 2 WO 6 , 26 CdS, 27,28 Cu 2 O, 29 etc. have been proven to form heterojunctions with BiOBr, which make the catalyst have excellent catalytic performance.…”