%0 Journal Article %T Photocatalytic degradation of malachite green dye under UV light irradiation using calcium-doped ceria nanoparticles %J Asian Journal of Nanoscience and Materials %I Sami Publishing Company %Z 2645-775X %A Amar, Ibrahim A. %A Harara, Hebatallah M. %A Baqul, Qamrah A. %A Abdul Qadir, Mabroukah A. %A Altohami, Fatima A. %A Ahwidi, Mohammed M. %A Abdalsamed, Ihssin A. %A Saleh, Fatema A. %D 2020 %\ 01/01/2020 %V 3 %N 1 %P 1-14 %! Photocatalytic degradation of malachite green dye under UV light irradiation using calcium-doped ceria nanoparticles %K dye photodegradation %K Nanostructured materials %K doped ceria catalyst %K Semiconductor %K Optical properties %R 10.26655/AJNANOMAT.2020.1.1 %X In this study, photocatalytic activity of Ca-doped ceria (CDC) for malachite green (MG) degradation was investigated. CDC was successfully synthesized via co-precipitation method using ammonium oxalate as a precipitating agent. CDC was characterized using Fourier transform infrared spectroscopy (FTIR), powder X-ray diffraction (XRD), UV-Vis spectroscopy, and scanning electron microscopy (SEM). The band gap energy (Eg) of CDC was found to be 3.96 eV. In addition, the factors affecting the photodegradation of MG including; irradiation time, photocatalyst dosage, initial dye concentration, and solution temperature were studied. The results revealed that CDC could degrade approximately 93% of MG dye at the concentration of 6 mg/L, irradiation time of 90 min, photocatalyst dosage of 0.1 g, and solution temperature of 35 °C. The obtained results indicate that CDC is a promising material for the photocatalytic applications and can be used to eliminate very toxic dyes such as MG. %U https://www.ajnanomat.com/article_92856_c405b04c2ab7e819ae6e1394a60febb2.pdf