Characterization of photoactive Fe-TiO2 lime coatings for building protection: the role of iron contentCharacterization of photoactive Fe-TiO2 lime coatings for building protection: the role of iron content Peer-Reviewed Journal Publication Δημοσίευση σε Περιοδικό με Κριτές 2020-06-012019enIron-doped TiO2 nanoparticles, ranging in Fe concentrations from0.05 up to 1.00%w/w, were synthesized through a simple sol-gel method. Fourier-transform infrared spectroscopy (FTIR), X-ray powder diffraction (XRD), Ultraviolet-Visible (UV-Vis) spectroscopy, nitrogen adsorption desorption isotherms, X-ray photoelectron spectroscopy (XPS), and X-ray absorption near-edge structure spectroscopy (XANES) were used to characterize the synthesized nanoparticles. The characterization of the Fe-doped TiO2 nanoparticles revealed the predominant presence of anatase crystalline form, as well as the incorporation of the Fe3+ ions into the crystal lattice of TiO2. The photocatalytic assessment of the Fe-doped TiO2 nanoparticles indicated that the low iron doping titania (0.05 and 0.10% w/w) have a positive effect on the photocatalytic degradation of Methyl Orange under visible radiation. Moreover, FTIR monitoring of calcium hydroxide pastes enriched with low Fe-doped TiO2 revealed enhancement of carbonation at both early and later stages. Improved photocatalytic performance and increased lime carbonation, observed in lime coatings with low Fe-doped TiO2 admixtures, established them as invaluable contributors to the protection of the built environment.http://creativecommons.org/licenses/by/4.0/Materials1211Kapridaki_et_al_Materials_12(11)_2019.pdfChania [Greece]Library of TUC2020-05-29application/pdf4.2 MBfree Kapridaki Chrysi Καπριδακη Χρυση Xynidis Nikolaos Ξυνιδης Νικολαος Vazgiouraki Eleftheria Βαζγιουρακη Ελευθερια Kallithrakas-Kontos Nikolaos Καλλιθρακας-Κοντος Νικολαος Maravelaki Pagona Μαραβελακη Παγωνα MDPI Carbonation Fe content Fe-doped TiO2 Lime and Fe-TiO2 coating Photocatalytic activity Self-cleaning TiO2 Visible light