The photocatalytic degradation of 2-Chloroethyl Ethyl sulfide with 2D titanium-based anionic metal-organic framework under visible light

Two-dimensional titanium-based anionic metal-organic framework (Ti-DMTHA-Li) was synthesized with conjugated aromatic ligand DMTHA and titanium (IV) oxide acetylacetonate (TiO(acac)2) via a solvothermal method. The resulting Ti-DMTHA-Li exhibits high crystallinity, 2D nanosheet-like morphology, and a large specific surface area (1130 m2 g-1) with uniform pore distribution (∼1.9 nm). The chemical structure and band structure of Ti-DMTHA-Li were comprehensively characterized. Under visible light irradiation, Ti-DMTHA-Li effectively catalyzes the selective oxidation of CEES, achieving a half-life of just 21.5 minutes. Furthermore, the UV-Vis spectrum, Tauc plot, Mott-Schottky spectrum, and VB-XPS spectrum were used to analyze the band structure, indicating favorable light absorption and band alignment for photooxidation applications.