Enhanced photocatalytic H<sub>2</sub> evolution: optimized atomic hydrogen desorption <i>via</i> free-electron transfer in sulfur-rich MoWS<sub>2+<i>x</i></sub> on vacancy-engineered CdS crystals
Ruiding Fei, Jianfeng Zhao, Huinan Wang, Huijuan Lin, Kui Xu, Guang Zeng, Wenchao Wang, Zhiping Yan
Abstract
The metal substitution method and in situ sulfur vacancy method synergistically increase carrier density, create electron-rich sites, weaken the S–H ads bond, and enhance hydrogen evolution in MoWS 2+ x /CdS v photocatalysts across the UV-vis-NIR region.
Topics & Concepts
Vacancy defectPhotocatalysisSulfurMaterials scienceElectronDesorptionHydrogenChemical physicsElectron transferFree electron modelAtomic physicsPhotochemistryNanotechnologyOptoelectronicsChemistryCrystallographyPhysical chemistryAdsorptionPhysicsCatalysisMetallurgyNuclear physicsBiochemistryOrganic chemistryAdvanced Photocatalysis TechniquesChalcogenide Semiconductor Thin FilmsElectrocatalysts for Energy Conversion