Environmental pollution remains a considerable health risk source all over the world; however, hazards are usually higher in developing countries. Iraq has long been suffering from the problem of pollution and how to treat pollution. Photocatalytic degradation has turned out to be most productive process for dye degradation. In this investigation, Rhodamine B (RhB), dye has been selected for degradation under visible light illumination. To address this issue, we fabricate erbium trioxide nanoparticles (Er2O3/NPs). Erbium trioxide nanoparticles are prepared and utilized for photo-catalytic degradation. The characterization of Er2O3/NPs is described and confirmed by utilizing of XRD (X-ray diffraction) and SEM (Scanning Electron Microscopy). The average size of Er2O3 nanoparticles is observed to be 16.00 nm. Er2O3/NPs is investigated for its ability of photo-catalytic degradation through certain selected parameters such as concentration and time. The methodological results show that the synthesized Er2O3/NPs is a good photo-catalytic for Rhodamine degradation.

1. Introduction
2. Experimental
    2.1 Materials
    2.2 Synthesis of Er2O3 NPs:
    2.3 Sample Preparation
    2.4 Photocatalytic Set Up
    2.5 Methods
3. Result and Discussion
    3.1 Absences of Sunlight
    3.2 In presence of SL
    3.3 Impact of Rhodamine B Concentration
    3.4 SEM Results
    3.5 XRD Results
4. Conclusion
References

• Hasan M. Luaibi(Al-Karkh University of Science, College of Science of Energy and Environment)
• Saja S. Al-Taweel(University of Al-Qadisiyah, College of Science, Department of Chemistry)
• Tayser Sumer Gaaz(Technical College Al-Musaib, Al-Furat Al Awsat Technical University) Corresponding author
• Abdul Amir H. Kadhum(University of Al-Ameed/Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia)
• Mohd S. Takriff(Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia)
• Ahmed A. Al-Amiery(Energy and Renewable Energies Technology Center, University of Technology) Corresponding author