Abstract
This research focuses on the elimination of Rose bengal dye using nanoparticles consisting of cerium oxide (CeO2) loaded onto activated carbon (CeO2@AC) and carbon nanofibers (CeO2@NF). These nanoparticles were developed through co-precipitation techniques. X-ray diffraction and transmission electron microscopy (TEM) were employed to verify the structural properties and crystalline dimensions of these nanocomposites. The average particle sizes for CeO2, CeO2@AC, and CeO2@NF nanocomposites are determined to be 7.5 nm, 10.5 nm, and 10.0 nm, respectively from XRD. The TEM images shows regularly shaped spherical particles falling within the size range of 7 to 15 nm. Raman spectroscopy and X-ray photoelectron spectroscopy were utilized to investigate their electronic characteristics and the presence of lattice defects, specifically oxygen vacancies, was quantified. The distinctive structure and lattice defects contribute to the photocatalytic degradation of RB dye, with CeO2, AC, and NF exhibiting photocatalytic efficiencies of 75 %, 88 %, and 89.8 %, respectively, when exposed to UV light. Additionally, the magnetic properties of the synthesized samples were examined using a vibrating sample magnetometer. Consequently, cerium oxide nanocomposites combined with activated carbon and nanofibers have demonstrated their utility as multifunctional materials, suitable for photocatalysis.
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