Activating and Optimizing the Mos2Moo3 S-Scheme Heterojunction Catalyst Through Interface Engineering to Form a Sulfur-Rich Surface for Photocatalyst Hydrogen Evolution
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Titel:
Activating and Optimizing the Mos2Moo3 S-Scheme Heterojunction Catalyst Through Interface Engineering to Form a Sulfur-Rich Surface for Photocatalyst Hydrogen Evolution
Beschreibung:
As a crucial part of artificial photosynthesis, the design of the catalyst is important essential. Among them, the interface engineering between semiconductors and the construction of surface-active sites play a vital role in generating and transporting light-excited electrons, which can ultimately accelerate water decomposition. To this end, the MoS2MoO3 step (S)-scheme heterojunction photocatalyst is prepared by partially sulfided in-situ growth. The excellent interface engineering of MoS2@MoO3 nanomaterials achieves a high surface reaction rate. The in-situ vulcanization strategy gradually corrodes from the outside to the inside. The introduction of sulfur atoms can replace oxygen atoms to build a sulfur-rich surface and generate molybdenum sulfide. Adjusting the amount of thioacetamide to control vulcanization and optimizing the experimental conditions, the best hydrogen production rate is 12416.8 µmol h-1 g-1. An in-situ irradiation XPS experiments and DFT calculations to gain a deeper understanding of the S-scheme electron transport mechanism in MoS2@MoO3. MoS2@MoO3 interface interaction has penetrating electron channels and a strong interface interaction force, effectively promoting the charge transfer between interfaces. This gradual surface vulcanization strategy provides new ideas for introducing synergistic surface-active sites and optimizing interface engineering photocatalyst projects