Photoactive Fe-TiO2 Lime Plasters for Building Protection

Author(s): Chrysi Kapridaki, Nikolaos Xynidis, Nikolaos Xekoukoulotakis, Nikolaos Kallithrakas-Kontos, Noni Maravelaki
Paper category: Proceedings
Book title: Proceedings of the 5th Historic Mortars Conference
Editor(s): José Ignacio Álvarez, José María Fernández, Íńigo Navarro, Adrián Durán, Rafael Sirera
ISBN: 978-2-35158-221-3
e-ISBN: 978-2-35158-222-0
Publisher: RILEM Publications SARL
Publication year: 2019
Pages: 346-358
Total Pages: 13
Language : English

Abstract: TiO2 and Fe-doped TiO2 nanoparticles, containing Fe concentrations of 0.05, 0.10 and 1.00% w/w) were synthesized through a simple sol-gel method. FTIR, XRD, XPS and XANES analyses 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 Fe content TiO2 nanoparticles (0.05 and 0.1 w/w %), have a positive effect on the photocatalytic degradation of Methyl Orange under the visible radiation. Moreover, FTIR monitoring of lime pastes enriched with Fe-doped TiO2, revealed that an enhancement of carbonation occurred for the undoped TiO2 and 0.05Fe doped TiO2. Therefore, the doping of TiO2 with Fe at low concentration up to 0.05% w/w resulted as the best performed both, from the photocatalytic point of view in protecting the architectural surfaces from the pollutant deposition and, in enhancing the carbonation process.

Online publication : 2019
Publication type : full_text
Public price (Euros) : 0.00