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Effect of pH on the structural, morphological, and optical properties of cerium oxide nano-thin films prepared by the hydrothermal method | ||
| Journal of University of Anbar for Pure Science | ||
| Volume 19, Issue 2, November and December 2025, Pages 96-101 PDF (1.84 M) | ||
| Document Type: Research Paper | ||
| DOI: 10.37652/juaps.2024.153787.1320 | ||
| Authors | ||
| Abd alhameed A. Hameed* 1; Isam M. Ibrahim2; J. F. Mohammad3 | ||
| 1Ministry of Education, Education Direction in Al-Anbar, Iraq | ||
| 2Department of Physics, College of Science, University of Baghdad, Baghdad, Iraq | ||
| 3Physics Department, College of Education for Pure Sciences, University of Anbar, Iraq | ||
| Abstract | ||
| Cerium oxide (CeO 2 ) Nano-thin films on a seed layer were synthesized via the hydrothermal method at pH 3 and 9. The structural, morphological, and optical characteristics of the produced films were investigated. X-ray diffraction (XRD) tests showed that the prepared films are polycrystalline and have a cubic structure. Additionally, they have a crystallite size of approximately 14.5 nm and a pH of 3. Increasing the pH to 9 reduced the crystallite size to 12.9 nm. Field-emission scanning electron microscopy (FESEM) images revealed that changing the pH resulted in a reduction in the size of the nanoparticles, while maintaining their spherical shape. Energy-dispersive X-ray Spectroscopy (EDS) analysis confirmed the absence of impurity elements in the prepared samples, verifying the formation of pure cerium oxide. UV-vis examinations showed that increasing the pH value of the prepared films enhanced the optical transmittance and increased the values of the optical energy gap. | ||
| Keywords | ||
| CeO 2films; Hydrothermal method; Nanostructure; Seed layer | ||
| References | ||
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