6533b831fe1ef96bd1298548

RESEARCH PRODUCT

Photoluminescence: A very sensitive tool to detect the presence of anatase in rutile phase electrospun TiO 2 nanofibers

Antonio KhouryCynthia EidMikhael BechelanyNadine AbboudMaryline NasrMaryline NasrAdib Abou ChaayaRoman ViterRoman ViterPhilippe Miele

subject

AnatasePhotoluminescenceMaterials scienceScanning electron microscopeNanotechnology02 engineering and technology010402 general chemistry01 natural sciencessymbols.namesakechemistry.chemical_compound[CHIM]Chemical SciencesGeneral Materials ScienceElectrical and Electronic EngineeringComputingMilieux_MISCELLANEOUS021001 nanoscience & nanotechnologyCondensed Matter PhysicsElectrospinning0104 chemical scienceschemistryChemical engineeringRutileNanofiberTitanium dioxidesymbols0210 nano-technologyRaman spectroscopy

description

Abstract This paper reports on the synthesis and the characterization of titanium dioxide (TiO2) nanofibers prepared by electrospinning. The samples were annealed at various temperatures in air for 4 h. The as-spun and annealed TiO2/PVP composite nanofibers were characterized by scanning electron microscopy (SEM), Energy-dispersive X-ray spectroscopy analysis (EDX), X-ray diffraction (XRD), Raman spectroscopy and photoluminescence (PL). The results show that the heat treatment has an effect on the crystallization process. Even if the XRD data shows a complete anatase-to-rutile transition in the TiO2 nanofibers at 900 °C, photoluminescence reveals a small portion of anatase in rutile sample. This observation proved that photoluminescence is a very sensitive tool to detect the presence of anatase in rutile phase TiO2 nanostructures.

yearjournalcountryeditionlanguage
2015-01-01Superlattices and Microstructures
https://doi.org/10.1016/j.spmi.2014.10.034