6533b823fe1ef96bd127e22a

RESEARCH PRODUCT

Determination of the crystallinity of TiO2 photocatalysts

Agatino Di PaolaBartolomeo MegnaLeonardo PalmisanoMarianna Bellardita

subject

AnataseAqueous solutionAnataseXRDChemistryGeneral Chemical EngineeringAnalytical chemistryGeneral Physics and Astronomy02 engineering and technologyGeneral Chemistry010402 general chemistry021001 nanoscience & nanotechnology01 natural sciences0104 chemical sciencesRutileFull width at half maximumCrystallinityPhotocatalysiRutilePhotocatalysisSettore CHIM/07 - Fondamenti Chimici Delle TecnologieCrystallite0210 nano-technologyPhotodegradationCrystallinity

description

Abstract This study reports a new simple method to determine the crystallinity of anatase and rutile TiO2 photocatalysts. The crystallinity degree of various anatase and rutile samples was estimated by XRD analysis from the ratio among the full width at half maximum intensities of the main diffraction peaks of anatase or rutile and the (111) peak of CaF2 as internal standard. The photocatalytic activity of selected powders was tested employing the photodegradation of 4-nitrophenol in aqueous solution as probe reaction. The results showed that the photoactivity of the investigated samples increased with increasing crystallinity and crystallite size.

yearjournalcountryeditionlanguage
2018-12-01Journal of Photochemistry and Photobiology A: Chemistry
https://doi.org/10.1016/j.jphotochem.2018.08.042