Ce supported Al₂O₃ nanoparticles synthesized by coprecipitation method; morphology and optoelectronic study

Abstract

In this research, ceria (Ce)- doped alumina (Al₂O₃) nanoparticles (NPs) were fabricated in different level of cerium using coprecipitation method. To characterize the morphology, crystal structure and optical properties, the FESEM, XRD, TEM, UV-DRS and FTIR analyses were performed. The structure analysis of undoped samples showed the multiple phases of γ, δ and θ–alumina, and the structure remained unchanged when cerium atom was doped into the alumina. The morphology and structure studies were carried out to investigate the effect of Ce doping on the polycrystalline alumina nanoparticles. The optical analysis was also done to study of the bandgap energy of the Al₂O₃ NPs. The novelty of this work is the synthesis of Ce-doped Al₂O₃ NPs with new precursors and improving their optical properties.

Keywords:

• Ce doping
• Al₂O₃ nanoparticles
• Coprecipitation method
• Crystal structure
• TEM

Acknowledgments

The authors are thankful for the financial support of varamin pishva branch at Islamic Azad University for analysis and the discussions on the results.