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Technical University of Crete
Technical University of Crete
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| URI: | http://purl.tuc.gr/dl/dias/B8DD1E84-153F-41C1-B9C4-BA5F3EBB81A4 | ||
| Year | 2019 | ||
| Type of Item | Peer-Reviewed Journal Publication | ||
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| Bibliographic Citation | C. Kapridaki, N. Xynidis, E. Vazgiouraki, N. Kallithrakas-Kontos and P.Maravelaki-Kalaitzaki, "Characterization of photoactive Fe-TiO2 lime coatings for building protection: the role of iron content," Materials, vol. 12, no. 11, Jun. 2019. doi: 10.3390/ma12111847 https://doi.org/10.3390/ma12111847 | ||
| Appears in Collections |
Iron-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.
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