Optical Studies of TiO₂ Nanocomposites with Mg, Zn and Co

Abstract:

TiO₂-based photocatalysis has attracted a lot of interest due to its potential to capture solar energy and drive important processes including the breakdown of pollutants and the development of sustainable energy sources. A series of magnesium, zinc, and cobalt nitrate nanocomposite samples with TiO₂ semiconductor nanocomposite samples have been successfully produced by employing a simple and very effective combustion technique with the oxidizing gas urea. Prepared pure TiO₂ nanoparticle was found to have a bandgap of 3.3 eV and a crystalline size of 57.8 nm. For Co, Mg, and Zn doped TiO₂, X-ray diffraction (XRD) studies show cubic, orthorhombic, and tetragonal crystalline structures with crystalline diameters ranging between 37 nm, 46 nm, and 87 nm. Optical study has demonstrated the absorbance, transmittance, and bandgap measurements of Co, Mg, and Zn doped TiO₂. The higher provider density brought on by the Brustein-Moss impact is responsible for the bandgap values' shift to higher energies, which vary from 4.43 eV to 5.35 eV. Visiblei light irradiation was used to measure the degradation of Rhodamine-B (RhB) dye; Co, Mg, and Zn doped TiO₂ explained high photocatalytic activity, which was thoroughly described. The addition of additional energy levels to the TiO₂ bandgap by the dopants results in a wider spectrum of light absorption and more effective use of solar radiation. Here reported the parameters affect how well TiO₂ nanoparticles infused with Mg, Zn, and Co perform photocatalysis.

• Periodical: Advanced Materials Research (Volume 1185)
• Pages: 19-34
• DOI: https://doi.org/10.4028/p-BEZs9w
• Online since: December 2025
• Authors: K. Gokila, A.Afroos Banu, S. A. Fowziya, A. Shajahan, M.Palanivelu Palanivelu, M. Ismail Fathima, A. Ayeshamariam*
• Keywords: Degradation, Nanocomposites, Optoelectronics, Photocatalytic Studies, Rhodamine-B

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