Synthesis of complexes from metal cations and 1,3,5-tris-(betta oxoethyl) hexahydroxo-s-triazine and evaluation of their photocatalytic properties

This study describes the synthesis of coordination complexes based on Zn²⁺ and Cd²⁺ metal cations using 1,3,5-tris(β-hydroxyethyl)hexahydro-s-triazine as an organic ligand. The obtained compounds were characterized by IR spectroscopy, which revealed characteristic absorption bands corresponding to C=N stretching vibrations in the triazine ring, as well as peaks at 689.08 cm^-1 and 624.53 cm^-1 associated with Zn–O and Zn–N stretching vibrations, respectively. X-ray microanalysis confirmed that the elemental composition of the complexes corresponded to that of the starting reagents. Energy-dispersive X-ray spectroscopy (EDS) revealed distinct Zn-Kα and high-energy Zn-Kβ peaks around 8.6 keV, indicating the presence of metallic zinc. Quantum chemical calculations showed that the HOMO energy level of the Zn complex is –1.905 eV, the LUMO level is 5.707 eV, and the energy gap (ΔE) is 3.802 eV. The photocatalytic activity of the Zn–1,3,5-tris(β-hydroxyethyl)hexahydro-s-triazine complex was evaluated by studying the photodegradation of methylene blue dye in wastewater under UV light irradiation. The results demonstrated that 76.14% of the dye was decomposed within 15 minutes, indicating a high photocatalytic efficiency of the synthesized complex.

Hali tarjima qilinmagan