0D/3D Bi3TaO7/ZnIn2S4 heterojunction photocatalyst towards degradation of antibiotics coupled with simultaneous H2 evolution: In situ irradiated XPS investigation and S-scheme mechanism insight

S-scheme heterojunction AgCl/g-C3N4 with a unique electron transfer channel via a built-in electric field for enhanced H2 production

“…In other words, the electron transfer direction is consistent with the mechanism of the S-scheme heterojunction. 65,66 The peaks for Ag at 369.3 eV and 375.3 eV (Fig. 1(d)) can be assigned to Ag 3d 5/2 and Ag 3d 3/2 , implying that the chemical state of Ag in AgCl/g-C 3 N 4 -3 is Ag + .…”

“…In other words, the electron transfer direction is consistent with the mechanism of the Sscheme heterojunction. 65,66 The peaks for Ag at 369. where the peaks at 3000-3600 cm À1 can be attributed to the tensile vibration of -NH 2 . The characteristic peaks at 1200-1600 cm À1 can be assigned to the vibration of tri-s-triazine.…”

“…[58][59][60] In this S-scheme heterojunction, not only is a strong redox potential introduced to form an internal electric eld, but also draws into the same Fermi level to reduce the resistance during electron transition, meanwhile, band bending precipitates the holes in the electron depletion layer and the electrons of the electron accumulation layer at the interface area to be reunited. [61][62][63][64][65][66] The charge-transfer route in the AgCl/g-C 3 N 4 S-scheme heterojunction is shown in Fig. 7, where AgCl and g-C 3 N 4 with staggered band structures form an S-scheme heterojunction, which shows a distinctive chargetransfer trajectory with the electrons in the VB of g-C 3 N 4 transferred into the CB of AgCl.…”

Nb–O–C Charge Transfer Bridge in 2D/2D Nb2O5/g‐C3N4 S‐Scheme Heterojunction for Boosting Solar‐Driven CO2 Reduction: In Situ Illuminated X‐Ray Photoelectron Spectroscopy Investigation and Mechanism Insight

“…The formation of CO and CH 4 called for two and eight electrons, respectively. [55][56][57][58] To confirm the reasons for the enhancement of PCRR performances of Nb [59][60][61] The aforementioned results indicate that the work function of Nb 2 O 5 is larger than that of g-C 3 N 4 nanosheets, thus the two semiconductors are available to construct an S-scheme heterojunction with a unique Nb-O-C charge transfer bridge. [62,63] The aforementioned results of XPS and in situ XPS analysis indexed to the characteristics of novel S-scheme heterojunction photocatalysts.…”

“…Most importantly, the absorption bands at 1135 and 1082 cm À1 , which can be indexed to CH 3 O* and CHO* groups are also observed. The formation of CO and CH 4 called for two and eight electrons, respectively [55][56][57][58]. To confirm the reasons for the enhancement of PCRR performances of Nb2 O 5 /g-C 3 N 4 composites, it is indispensable to investigate the separation and transport efficiency of photogenerated electron-hole pairs through photoelectronic chemical characterization and electron paramagnetic resonance techniques.…”