Effect of metal ion addition on structural characteristics and photocatalytic activity of ordered mesoporous titania
Source abstract
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.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: TiO2 Photocatalysis and Solar Cells · Mesoporous Materials and Catalysis · Polyoxometalates: Synthesis and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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