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Journal of Sol-Gel Science and Technology
Erschienen in: Journal of Sol-Gel Science and Technology 3/2019

22.06.2019 | Original Paper: Nano-structured materials (particles, fibers, colloids, composites, etc.)

Effect of metal ion addition on structural characteristics and photocatalytic activity of ordered mesoporous titania

verfasst von: Ahmed Mudhafar Mohammed, Michael Sebek, Carsten Kreyenschulte, Henrik Lund, Jabor Rabeah, Peter Langer, Jennifer Strunk, Norbert Steinfeldt

Erschienen in: Journal of Sol-Gel Science and Technology | Ausgabe 3/2019

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Abstract

Ordered mesoporous titanium dioxide with different Fe, Co and Ni content (0.5 and 5 mol%) has been synthesized by co-precipitation using the evaporation–induced self-assembly (EISA) method combined with the liquid crystal templating (LCT) pathway. The structural characteristics of the prepared materials have been studied by several analytical techniques. Small-angle X-ray scattering was used to follow the effect of single synthesis steps on mesoporous ordering. The materials obtained after final calcination were characterized by scanning transmission electron microscopy, X-ray diffraction, electron paramagnetic resonance, UV/visible diffuse reflectance spectroscopy, and nitrogen adsorption-desorption. At low metal content (0.5 mol%) the presence of the doping metal has only a minor impact on the mesoporous ordering of the titania structure obtained after calcination. At higher doping metal content (5 mol%) the structural characteristics depend on the particular metal. The synthesized materials have been tested in photocatalytic degradation of phenol under UV irradiation. The influence of structural parameters such as BET surface area, pore volume, and degree of ordering on phenol degradation were insignificant. Photocatalytic activity depends mainly on the particular metal and its amount. Titania doped with 0.5 mol% Fe or Co showed improved phenol degradation compared to the pristine titania.
Vorheriger Artikel Silver nanoparticles deposition on silica, magnetite, and alumina surfaces for effective removal of Allura red from aqueous solutions
Nächster Artikel Stability and degradation of PEO20PPO70PEO20 triblock copolymers in mesostructured silica

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Metadaten
Titel
Effect of metal ion addition on structural characteristics and photocatalytic activity of ordered mesoporous titania
verfasst von
Ahmed Mudhafar Mohammed
Michael Sebek
Carsten Kreyenschulte
Henrik Lund
Jabor Rabeah
Peter Langer
Jennifer Strunk
Norbert Steinfeldt
Publikationsdatum
22.06.2019
Verlag
Springer US
Erschienen in
Journal of Sol-Gel Science and Technology / Ausgabe 3/2019
Print ISSN: 0928-0707
Elektronische ISSN: 1573-4846
DOI
https://doi.org/10.1007/s10971-019-05052-w

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