Thermodynamic Study of TiO2 Nanoparticles Synthesized Using Sol-Gel Decomposition to Remove Pesticide from a Liquid Medium
نویسندگان
1 Ministry of Education, Directorate Education of Rusafa-2, Baghdad, Iraq
2 Energy and Renewable Energies Technology Center, University of Technology, Iraq
3 Department of Chemical Industrial, Institute of Technology, Baghdad, Middle Technical University, Iraq
4 Department of Chemical Industrial, Institute of Technology, Baghdad, Middle Technical University, Iraq
doi
10.22052/JNS.2025.04.081چکیده
A method for generating high-quality titanium dioxide nanoparticles with a narrow size distribution at the nanometer scale is described. The TiO2 nanostructures are produced using the sol-gel process. Scanning electron microscopy and transmission electron microscopy reveal small, uniform spherical nanocrystals arranged in a reticular lattice pattern, with an average grain size of approximately 56 nm. The purity of the spherical crystal structure of all prepared metal sulfides is demonstrated by X-ray diffraction (XRD), which indicates an average crystal size of 40 nm. The ability of the nanomaterial to remove the pesticide pentachlorophenol (PCP) from aqueous solution was then evaluated, showing an impressive nanoparticle production efficiency of 80 %. The adsorption equilibria are consistent with the Langmuir and Freundlich models. Since adsorption is an endothermic physical process, a correlation coefficient (R = 0.98) indicates that the Freundlich model is the most suitable for experimental conditions, these results confirm the surface play a good role for pollutants removal.
