Photocatalytic degradation of malachite eco-friendly dye less than UV mild irradiation working with calcium-doped ceria nanoparticles Characterization and photodegradation of methylene blue dye applying bio-synthesized cerium oxide nanoparticles with Spirulina platensis extract The DES-modified cerium oxide NPs were attained by mixing the NPs with DES with a 8:1 ratio by https://alanv852ovb7.buscawiki.com/user