Citation: Qingwang LIU. MoS₂/Ag/g-C₃N₄ Z-scheme heterojunction: Preparation and photocatalytic performance[J]. Chinese Journal of Inorganic Chemistry, ;2025, 41(4): 821-832. doi: 10.11862/CJIC.20240148 shu

MoS₂/Ag/g-C₃N₄ Z-scheme heterojunction: Preparation and photocatalytic performance

Qingwang LIU

Anhui Engineering Research Center for Photoelectrocatalytic Electrode Materials, School of Chemistry and Materials Engineering, Huainan Normal University, Huainan, Anhui 232038, China

Received Date: 28 April 2024
Revised Date: 2 March 2025

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MoS₂/Ag/g-C₃N₄ composite photocatalysts were prepared via hydrothermal synthesis, and a series of analytical methods were employed for systematic characterization. The results indicate that the significant enhancement in catalytic degradation activity is attributed to the formation of Z-scheme heterojunction, which effectively facilitates the transport and separation of photogenerated charge carriers while suppressing the recombination of photogenerated electron and hole pairs. Degradation experiments demonstrated that the prepared composite material achieved a degradation rate of up to 98% for rhodamine B (RhB) within 120 min, exhibiting superior photocatalytic performance compared to individual photocatalysts. Furthermore, capture experiments and electron paramagnetic resonance (EPR) results revealed that superoxide radicals (·O₂^-) and photogenerated holes (h⁺) were the key active species in the photocatalytic degradation of RhB. Finally, an in-depth discussion of the photocatalytic degradation mechanism of the composite material was conducted.
- MoS₂/Ag/g-C₃N₄,
- heterojunction,
- photocatalytic degradation,
- degradation mechanism
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MoS2/Ag/g-C3N4 Z-scheme heterojunction: Preparation and photocatalytic performance

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MoS₂/Ag/g-C₃N₄ Z-scheme heterojunction: Preparation and photocatalytic performance