Discussion of the dissertation of doctoral student " Mahmoud Khaled Bara Al-Fahdawi"
The public discussion took place for the Doctoral student (Mahmoud Khaled Bara Al-Fahdawi) at Anbar University, College of Science, Department of Physics, on Thursday 27/2/2025 in Jaber Bin Hayyan Hall, for his tagged thesis
" Nanoparticles synthesis by Green-Cold plasma method for Physical and Biological Applications "
The discussion committee consisted of:
Prof. Dr. Ismat Ramzi Abdul Ghafour - University of Anbar - College of Science - Chairman
Prof. Dr. Mohammed Ghazi Hamad - University of Anbar - College of Science - Member
Assist. Prof. Dr. Khalil Thabet Hassan - University of Anbar College of Sciences - Member
Assist. Prof. Dr. Alla Ahmed Dayeh - University of Anbar - College of Sciences - Member
Assist. Prof. Dr. Sinan Adnan Abdul Latif - University of Mustansiriya - College of Medicine- Member
Prof. Dr. Ahmed Salman Obaid - University of Anbar - College of Sciences - Member and Supervisor
Asst. Prof. Dr. Ban Hassan Adel - University of Baghdad - College of Science for Girls Member and Supervisor
This work used plasma jetting technique and two materials (selenium nitrate and chromium nitrate) using two different methods. The first method is plasma jetting method which was used to generate selenium nanoparticles (SeNPs) and chromium oxide nanoparticles. The second method is green plasma jetting technique, using a mixture of sage extract and the desired material (selenium nitrate or chromium nitrate) in different proportions. The nanoparticles were characterized using UV-Vis spectra, X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), zeta potential and FTIR measurements.
The best sample of each nanomaterial for each method was taken to test its effectiveness on normal cells (REF) and cancer cells (MDA). The results showed the effectiveness of the nanomaterials in treating breast cancer (MDA) and normal cell lines (REF) using two different methods. In the second application, the sensitivity of selenium nanoparticles and chromium oxide nanoparticles as gas sensors for NO2 and H2S at different temperatures was investigated. The Cr2O3 nanoparticle sensor showed higher sensitivity for both gases than the selenium nanoparticle sensor.
.jpeg)
.jpeg)
.jpeg)
.jpeg)