Enhanced photocatalytic degradation and H2/H2O2 production performance of S-pCN/WO2.72 S-scheme heterojunction with appropriate surface oxygen vacancies

S‐Scheme Photocatalytic Systems

“…Therefore, numerous S‐scheme photocatalysts for splitting H 2 O into H 2 have been developed, e.g., S‐pCN/WO 2.7 , N‐doped MoS 2 /S‐doped g‐C 3 N 4 , g‐C 3 N 4 /Bi 2 MoO 6 , g‐C 3 N 4 /CdS, Py‐CNTs, Bi 2 S 3 /g‐C 3 N 4 , CuI‐GD/g‐C 3 N 4 , CdS/MoO 3– x , SnNb 2 O 6 /CdS, TiO 2 /CdS, CdS/W 18 O 49 , NiTiO 3 @Co 9 S 8 , Ru/SrTiO 3 /TiO 2 , WO 3 /TiO 2 , and g‐C 3 N 4 /MS 2 (M = Sn, Zr). [ 28–42 ] Li et al utilized solvent evaporation method to spontaneously assemble S‐introduced g‐C 3 N 4 and nonstoichiometric WO 2.72 for S‐scheme photocatalytic H 2 O splitting into H 2 evolution. [ 28 ] In Figure 5b, oxygen vacancies with electron defect states on WO 2.72 were interacted with S and N lone pair electrons of g‐C 3 N 4 , resulting in close interfaces.…”

“…[ 28–42 ] Li et al utilized solvent evaporation method to spontaneously assemble S‐introduced g‐C 3 N 4 and nonstoichiometric WO 2.72 for S‐scheme photocatalytic H 2 O splitting into H 2 evolution. [ 28 ] In Figure 5b, oxygen vacancies with electron defect states on WO 2.72 were interacted with S and N lone pair electrons of g‐C 3 N 4 , resulting in close interfaces. In this case, surfaces were also activated, facilitating H 2 O adsorption and corresponding activation.…”

“…S‐scheme photocatalysts demonstrate efficient performances for reactive oxygen species (ROS) evolution in pollutant decomposition and sterilization processes, e.g., CoFe 2 O 4 /g‐C 3 N 4 , 0D/2D CeO 2 /g‐C 3 N 4 , S‐pCN/WO 2.72 , Sb 2 WO 6 /g‐C 3 N 4 , OVs‐Bi 2 O 3 /Bi 2 SiO 5 , In 2 O 3– x (OH) y /Bi 2 MoO 6 , and BP/BiOBr, Bi 2 MoO 6 /CdS, BiOCl/CuBi 2 O 4 , Bi 2 WO 6 /g‐C 3 N 4 , SnNb 2 O 6 /Ag 3 VO 4 , BiOBr/BiOAC 1–– x Br x , BiOI/Bi 2 WO 6 , Bi 2 O 3 /TiO 2 , In 2 S 3 /Bi 2 O 2 CO 3 , ZnO–V 2 O 5 –WO 3 , S‐doped g‐C 3 N 4 /TiO 2 , BiVO 4 /Ag 3 VO 4 , CdS/UiO‐66, α‐Fe 2 O 3 /Bi 2 WO 6 , Cd 0.5 Zn 0.5 S/g‐C 3 N 4 , Sb 2 WO 6 /BiOBr, and Bi 2 MoO 6 /g‐C 3 N 4 /Au. [ 28,76–97 ] Li et al utilized thin black phosphorus (BP) to couple BiOBr nanosheets to construct S‐scheme BP/BiOBr nanoheterojunction for H 2 O 2 evolution, [ 80 ] as shown in Figure a. H 2 O 2 evolution rate over 10BP/BiOBr is 2.6 times than that over BiOBr.…”

Heterojunction photocatalysts for degradation of the tetracycline antibiotic: a review

“…(Fan et al 2020 ). Photocatalytic reduction and oxidation reactions occur on the surface of the high-potential semiconductor B and A, respectively (Li et al 2021b ). The concept of step-scheme is the first to propose the transfer of charge carriers under the effect of band bending, which is similar to how water flows downhill.…”

Few‐Layered MoxW1−xS2‐Modified CdS Photocatalyst: One‐Step Synthesis with Bifunctional Precursors and Improved H2‐Evolution Activity

“…Facing the rapid depletion of fossil fuel, hydrogen, a uniquely zero‐pollution energy carrier with high energy density, is definitely an ideal candidate to the traditional carbon‐based fuels. [ 1–5 ] The urgent requirement of hydrogen production has motivated the development of photocatalytic water splitting, which is totally cost‐effective and eco‐friendly by converting the naturally inexhaustible solar energy into hydrogen with water as the only reactant. [ 6–11 ] However, all the single‐host photocatalysts (such as TiO 2 , CdS, g‐C 3 N 4 , etc.)…”