Journal
PHYSICA B-CONDENSED MATTER
Volume 632, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.physb.2022.413760
Keywords
Co-precipitation; XRD; Photocatalytic degradation; Irradiation
Categories
Funding
- National Research Productivity for University (NRPU) [10408]
- Higher Education Commission (HEC) Pakistan
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This study prepared cerium oxide, sulfide, and cerium sulfide-cerium oxide composites using the co-precipitation technique, and characterized them using XRD. The results showed that the composite of cerium oxide/sulfide had a higher photocatalytic degradation rate for rhodamine B dye under UV irradiation compared to cerium oxide and cerium sulfide.
Cerium oxide, sulfide and composites of cerium sulfide-cerium oxide were prepared by co-precipitation technique. The fabricated samples were characterized by XRD. The photocatalytic degradation of synthesized samples was made to check their catalytic performance. The results of photocatalytic activity verified that 94% degradation of the rhodamine B dye took place in presence of catalyst (composite of cerium oxide/sulfide) and UV-visible irradiation, whereas in catalyst absence, percentage degradation of rhodamine B dye was less than 15% at the end of 120 min. The composite of cerium oxide/sulfide showed greater photo degradation (94%) with rhodamine B dye under UV irradiation than cerium oxide (80%) and cerium sulfide (71%). Percentage degradation of composite materials was greater due to the band gap because photo catalysis depends upon the band gap energy. Band gap energy for composite of cerium oxide/sulfide may be calculated by Tauc relationship. Photo degradation reaction obeyed the rules of pseudo-first-order kinetic reaction.
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