Ag modified g-C₃N₄/CdS (Ag@g-C₃N₄/CdS) S-scheme heterojunction with a distinctive charge transfer channel was prepared as a photocatalyst for photoreduction of H₂O. The effect of nitrogen vacancies and photo-excited charge carriers in the water splitting on the Ag@g-C₃N₄/CdS was discussed. It was found that the charge carriers transport channel in Ag@g-C3N4/CdS S-scheme heterojunction was instrumental in the enhancement of H₂ production. The electrons in Ag nanospheres and in the conduction band (CB) of CdS can recombine with the holes in the valence band (VB) of g-C₃N₄, which prolonged the lifetime of electrons in the CB of g-C₃N₄. Meanwhile, a unique charge transfer channel was produced in the Ag@g-C₃N₄/CdS. Compared with g-C₃N₄, Ag@g-C₃N₄/CdS photocatalyst demonstrated an enhanced performance which was assigned to the increased charge carrier lifetime. The supreme Ag@g-C₃N₄/CdS showed photocatalytic H₂ production activity up to 204.19 μmol for 4 h under illuminate (λ ≥ 420 nm), which was 11.74 times than that of g-C₃N₄.

Ag修饰的gC ₃ N ₄ /CdS (Ag@gC ₃ N ₄ /CdS) S型异质结具有独特的电荷转移通道，可作为H ₂ O光还原的光催化剂。氮空位和光激发电荷的影响讨论了 Ag@gC ₃ N ₄ /CdS 上水分解中的载体。发现Ag@g-C3N4/CdS S型异质结中的电荷载流子传输通道有助于提高H _​​2的产生。_{Ag 纳米球和 CdS 导带 (CB) 中的电子可以与 gC 3} N ₄价带 (VB) 中的空穴复合，延长了gC ₃ N ₄ CB中电子的寿命。_{同时，在Ag@gC 3} N ₄ /CdS中产生了独特的电荷转移通道。与gC ₃ N ₄相比，Ag@gC ₃ N ₄ /CdS 光催化剂表现出增强的性能，这归因于增加的电荷载流子寿命。最高的Ag@gC ₃ N ₄ /CdS在光照（λ≥420 nm）下4 h的光催化产H _{2活性高达204.19 μmol，是gC 3} N ₄的11.74倍。