Construction of strongly coupled 2D–2D SnS₂/CdS S-scheme heterostructures for photocatalytic hydrogen evolution

Abstract

Fabricating neoteric photocatalysts with high-efficiency charge separation for solar-driven hydrogen evolution reaction (HER) remains a challenge. Constructing strongly coupled two-dimensional (2D)-2D heterostructures is available to the charge spatial migration due...

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

“…Chen et al constructed a SnS 2 /CdS S-scheme heterojunction via a hydrothermal method, which exhibited high light absorption and hydrogen production efficiency and could be used as a two-dimensional heterojunction photocatalyst. 20 Zhen et al designed an S-scheme photocatalyst g-CN/BMO, in which g-C 3 N 4 nanosheets were wrapped on Bi 2 Mo 2 O 6 microspheres, and the photocatalytic activity and characterization results proved that g-CN/BMO is an S-scheme heterojunction with high photocatalytic activity. 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.…”

Enhanced photocatalytic performance of SnS2 under visible light irradiation: strategies and future perspectives

“…14(d) illustrates an instance of S-scheme formation between SnS 2 and CdS nanoparticles. 198 Before contact, SnS 2 and CdS exhibit different Fermi energy levels; CdS registers at 5.791 eV (Fig. 14(e)), while SnS 2 is at 6.683 eV.…”

Noble-metal-free bimetallic nitride decorated CdS nanorods for photocatalytic hydrogen generation

“…[13][14][15] However, pristine CdS exhibits low photocatalytic performance due to the fast recombination of charge carriers. 16,17 Loading a cocatalyst can significantly reduce the overpotential required for proton reduction and promote the separation of electron-hole pairs at the cocatalyst/semiconductor interface. This can greatly enhance the activity of photocatalytic H 2 evolution.…”