G.E. Putri, S. Arief, N. Jamarun, F.R. Gusti, R. Zainul
Nanocrystalline cerium oxide is synthesized by precipitation method using a mixture of water solvent and isopropanol with a ratio of 1: 6 at room temperature has been successfully synthesized. Nanocrystalline cerium oxide was characterized by using XRD, DRS UV-Vis Analytic, SEM and TEM. XRD results showed the peak intensity of Cerium Oxide (CeO 2 ) was absorbed in an angle of 2Ɵ which is 28.7 o , 33.2 o , 47.5 o , 56.7 o , 59.2 o , 69.5 o , 76.8 o , 79.1 o , 88.3 o , and 95.5 o . The size of cerium oxide crystals was calculated using the Debye Scherrer equation and obtained a crystal size value of 11.04 - 99.19 nm. Based on the XRD data, it can be concluded that the crystal size is included in the nanocrystal category with a size range of 1-100 nm. Microstructure results were analyzed by SEM and TEM showing rounded cerium oxide particles clumping like fine crystals. Optical properties of nanocrystalline cerium oxide were analyzed by DRS UV-Vis Analytic which showed that cerium oxide absorbs UV light at wavelengths of 200, 245 and 290 nm with an energy band gap value of 2.43 eV. © RASĀYAN. All rights reserved.
Sekolah Tinggi Ilmu Kesehatan Syedza Saintika, Padang, West Sumatra, Indonesia; Department of Chemistry, FMIPA, Universitas Andalas, Padang, West Sumatra, Indonesia; Department of Chemistry, FMIPA, Universitas Negeri Padang, Indonesia
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