Discussion of the master's thesis of the student "Israa Saleh Hussein"

In Arabic News Archive 2025-08-24 98 Vistors

Discussion of the master's thesis of the student "Israa Saleh Hussein"

The public discussion took place for the master’s student (Israa Saleh Hussein) Department of Physics- College of Science - University of Anbar on Sunday, August 24, 2025, in Jabir Ibn Hayyan Hall. for his tagged thesis

"Investigating the Characteristics of NiO-CeO2 Nanocomposite Thin Film for Gas Sensing Applications."

The discussion committee consisted of:

University of Anbar - College of Sciences - President	Prof. Dr. Ahmed Salman Obaid
University of Samarra - College of Education - Member	Prof. Dr. Omar Fadel Abdullah
University of Anbar - College of Applied Sciences - Member	Dr. Hamsa Adnan Ali
University of Anbar - College of Sciences - member and supervisor	Prof. Dr. Jamal Malallah Rizej

The aim of the study is to pure and CeO?-doped NiO thin films were successfully prepared using the chemical spray pyrolysis technique at 350°C. Structural analysis (XRD, AFM, FESEM, and EDX) confirmed the polycrystalline rhombohedral structure, uniform distribution of quasi-spherical grains, and a gradual reduction in grain and crystal size with doping, enhancing surface homogeneity. Optical results showed a bandgap of 3.8 eV for pure NiO, decreasing with CeO? doping. Gas sensing studies revealed improved sensitivity to CO? and H?S, with the best CO? response at 5% Ce and highest H?S sensitivity at 7% Ce, making the films promising candidates for gas sensor applications.