Թոհիդի, Սեյեդ Հոսսեյն

Տեխնոլոգիա

This work is devoted to the preparation, structural investigation, and characterization of CuO/SiO₂ nanocomposite catalysts using sol-gel synthesis and chemical transport reactions. The study focuses on the development of nanostructured copper oxide–silica materials and on understanding how their composition, morphology, structure, and physicochemical properties influence catalytic performance. Particular attention is given to the principles of sol-gel synthesis, a versatile method that enables controlled formation of oxide-based materials and provides opportunities to regulate particle size, dispersion, porosity, and interaction between the active component and the supporting matrix. The work also examines chemical transport reactions as an approach for obtaining and modifying materials with specific structural and compositional characteristics. An important part of the research concerns the characterization of the synthesized nanocomposites through appropriate physicochemical methods, allowing their phase composition, crystallinity, surface properties, morphology, particle dimensions, and distribution of copper oxide within the silica matrix to be evaluated. The relationship between preparation conditions and the resulting properties of the catalyst is considered in order to identify factors responsible for the formation of stable and active catalytic systems. The incorporation of CuO into a SiO₂ matrix is of particular interest because the support can influence the dispersion, accessibility, thermal stability, and surface behavior of the active copper-containing phase. The study therefore contributes to a better understanding of how nanoscale structural features affect the functional properties of composite catalysts. The developed materials may be relevant to heterogeneous catalysis and to technological processes requiring oxide-based catalytic systems with controlled surface characteristics. The research combines aspects of synthetic chemistry, solid-state chemistry, nanomaterials science, surface science, and catalysis, making it valuable for researchers and specialists working with functional oxide materials and advanced catalyst preparation techniques. It may also be useful to students and researchers in chemistry, materials science, chemical engineering, nanotechnology, and related fields who are interested in the synthesis and characterization of nanocomposite catalytic materials.