In-situ synthesis of ternary heterojunctions via g-C3N4 coupling with noble-metal-free NiS and CdS with efficient visible-light-induced photocatalytic H2 evolution and mechanism insight

A facile synthesis of a MoS2/soluble g-C3N4/CdS ternary composite for high efficiency photocatalytic hydrogen production

“…Here, several examples of previous research on binary or ternary composite photocatalysts are cited. For instance, Shang et al reported a ternary composite using Ag modified heterojunction (Ag@g-C 3 N 4 /CdS) for hydrogen evolution, and the maximum hydrogen production reached 204.19 μmol under irradiation for 4 hours ( λ ≥ 420 nm); 15 Wu et al reported a ternary composite (CdS/NiS/g-C 3 N 4 ) that showed the highest efficiency with a hydrogen production rate of 423.37 μmol g −1 h −1 ; 16 Hu et al reported a highly efficient ternary catalyst (CdS/Pt/g-C 3 N 4 ), and its photocatalytic hydrogen production rate reached 1465.9 μmol g −1 h −1 ; 17 Wang et al synthesized a ternary catalyst Pt-g-C 3 N 4 /CdS, which showed a hydrogen production rate of 35.3 mmol g −1 h −1 , and in addition, they also compared the charge carrier transfer mechanism and hydrogen production activity of Z-scheme and type II heterojunction based catalysts. 18 These studies demonstrated that the photocatalytic hydrogen evolution performances of materials based on g-C 3 N 4 and CdS were improved; however, the introduction of precious metals such as Pt or Ag as cocatalysts into the above materials limited their widespread application due to high cost.…”

Construction of a heterojunction with fast charge transport channels for photocatalytic hydrogen evolutionviaa synergistic strategy of Co-doping and crystal plane modulation

“…However, the current studies mainly focus on the extension of application fields, the construction of heterojunction types, and the design of catalyst morphology. [25][26][27][28][29] The high-efficiency separation and highthroughput directional transfer of photogenerated charges remain suboptimal due to insufficient research on internal carrier migration and interfacial properties.…”