Different sol–gel preparations of iron-doped TiO2 nanoparticles: characterization, photocatalytic activity and cytotoxicity

Fe-doped TiO 2 nanoparticles were prepared by sol–gel method using titanium tetraisopropoxide as the precursor of titania, 2-propanol as solvent, iron(III) chloride as dopant source through calcination at 350 °C. Three different types of samples were synthesized. Samples were characterized by means...

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Bibliographic Details
Published in:Journal of sol-gel science and technology 2016-10, Vol.80 (1), p.152-159
Main Authors: Caratto, Valentina, Locardi, Federico, Alberti, Stefano, Villa, Silvia, Sanguineti, Elisa, Martinelli, Alberto, Balbi, Teresa, Canesi, Laura, Ferretti, Maurizio
Format: Article
Language:English
Subjects:
Agglomeration
Anatase
Brookite
Catalytic activity
Ceramics
Chemistry and Materials Science
Composites
Computer simulation
Diffuse reflectance spectroscopy
Endothelial cells
Ferric chloride
Glass
Inorganic Chemistry
Iron chlorides
Light irradiation
Materials Science
Methylene blue
Nanoparticles
Nanotechnology
Natural Materials
Optical and Electronic Materials
Original Paper: Sol-gel and hybrid materials for catalytic
Photocatalysis
photoelectrochemical and sensor applications
Precursors
Reagents
Scanning electron microscopy
Sol-gel processes
Solvents
Surface area
Titanium
Titanium dioxide
Toxicity
X ray powder diffraction
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Summary:Fe-doped TiO 2 nanoparticles were prepared by sol–gel method using titanium tetraisopropoxide as the precursor of titania, 2-propanol as solvent, iron(III) chloride as dopant source through calcination at 350 °C. Three different types of samples were synthesized. Samples were characterized by means of X-ray powder diffraction, diffuse reflectance spectroscopy, scanning electron microscopy, Brunauer–Emmett–Teller analysis. All the samples showed the typical structure of anatase plus an amount of brookite ranging from 25 to 35 wt%. The features of the particles, i.e., surface area and aggregation state, were influenced by the reagents ratio: Generally increasing the solvent volume with respect to the titanium precursors induced the formation of nanoparticles with high surface area and low aggregation. Photocatalytic activity of Fe-doped TiO 2 nanopowders was evaluated through methylene blue degradation experiments conducted under simulated solar light irradiation. The cytotoxic potential of the three samples was evaluated in human umbilical vein endothelial cells. Graphical Abstract
ISSN:0928-0707
1573-4846
DOI:10.1007/s10971-016-4057-5