TY - JOUR
T1 - Effect of metal ion addition on structural characteristics and photocatalytic activity of ordered mesoporous titania
AU - Mohammed, Ahmed Mudhafar
AU - Sebek, Michael
AU - Kreyenschulte, Carsten
AU - Lund, Henrik
AU - Rabeah, Jabor
AU - Langer, Peter
AU - Strunk, Jennifer
AU - Steinfeldt, Norbert
N1 - Publisher Copyright:
© 2019, Springer Science+Business Media, LLC, part of Springer Nature.
PY - 2019/9/15
Y1 - 2019/9/15
N2 - 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. [Figure not available: see fulltext.].
AB - 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. [Figure not available: see fulltext.].
KW - Doping
KW - Ordered mesoporous titania
KW - Phenol
KW - Photodegradation
UR - http://www.scopus.com/inward/record.url?scp=85068113263&partnerID=8YFLogxK
U2 - 10.1007/s10971-019-05052-w
DO - 10.1007/s10971-019-05052-w
M3 - Article
AN - SCOPUS:85068113263
SN - 0928-0707
VL - 91
SP - 539
EP - 551
JO - Journal of Sol-Gel Science and Technology
JF - Journal of Sol-Gel Science and Technology
IS - 3
ER -