Abstract
Abstract Sm-doped hollow titania microspheres were fabricated by a simple solvothermal method using carbon spheres as hard template. The samples were characterized by X-ray diffraction (XRD), fourier transform infrared spectrum (FT-IR), scanning electron microscope (SEM), transmission electron microscope (TEM) and photoluminescence spectrum. In TEM images, hollow spheres with uniform morphology can be clearly observed. XRD results confirm that the hollow TiO2 spheres are anatase phase. The photoluminescence (PL) spectra of Sm-doped hollow TiO2 microspheres are dominated by red-emission around 612 nm due to intra-atomic 4f → 4f (4G5/2 → 6H7/2) transition of Sm3 +. The effect of doping concentrations of Sm3 + on the luminescence was investigated. The results show that the luminescence of TiO2:Sm3 + hollow microspheres has the strongest emission intensity when the ratio of Sm3 + is 2 mol%.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
