|Cite this article as:|
|Yanping Li, Xue Bian, Xun Jin, Peng Cen, Wenyuan Wu, and Gaofeng Fu, Characterization and ultraviolet–visible shielding property of samarium–cerium compounds containing Sm2O2S prepared by Co-precipitation method, Int. J. Miner. Metall. Mater.,(2021). https://doi.org/10.1007/s12613-021-2309-z|
Since ultraviolet (UV) light, as well as blue light, which was part of visible light, was harmful to skin, samarium-cerium compounds containing Sm2O2S were synthesized by co-precipitation method. This kind of compounds blocks not only UV light, but also blue light that is part of visible light. The minimum values of average transmittance (360–450 nm) and band gap of samarium-cerium compounds were 8.90% and 2.30 eV, respectively, which were less than 13.96% and 2.63 eV of CeO2. Elemental analysis (EA), X-ray diffraction (XRD), Fourier transformation infrared (FT-IR), and Raman spectra determined that the samples contained Ce4O7, Sm2O2S, Sm2O3, and Sm2O2SO4. The micro-structure of samples was analyzed by scanning and transmission electron microscopy (SEM, TEM). X-ray photoelectron spectrum (XPS) showed cerium had Ce3+ and Ce4+ valence states, and oxygen was divided into lattice oxygen and oxygen vacancy that was direct cause of the decrease of average transmittance and band gap.