Photocatalytic Decomposition of Metazachlor by Lanthanides-Doped Titanium Dioxide
KRÁLOVÁ, M.; KAŠPÁREK, V., SILLANPAA, M.; LEVCHUK, I.; CIHLÁŘ, J.
Originální název
Photocatalytic Decomposition of Metazachlor by Lanthanides-Doped Titanium Dioxide
Anglický název
Photocatalytic Decomposition of Metazachlor by Lanthanides-Doped Titanium Dioxide
Druh
Přednáška
Originální abstrakt
Heterogeneous photocatalysis is a very effective method for decomposition of a whole range of water pollutants. Lanthanides-doped titanium dioxide was chosen as a suitable photocatalytic material and the influence of synthesis conditions on physical properties, as well as on photocatalytic activity, was evaluated. Titanium dioxide was prepared via a sol-gel synthesis followed by a solid state reaction under different conditions such as various temperature (450C, 550C, 650C) and reaction time (4 hours, 8 hours, 12 hours). The crystalline phase was investigated using X-ray diffraction (XRD) and the results were confirmed by Raman spectroscopy. Structure, as well as particle size, were examined using scanning electron microscopy (SEM). Specific surface area was calculated from Brunauer-Emmett-Teller analysis (BET). Band gap energy was examined using ultraviolet-visible spectroscopy (UV-vis) from diffused reflectance measurement. Photocatalytic activity was studied as a degradation rate of the commonly used herbicide metazachlor. The decomposition was carried under UV light and the decreasing metazachlor concentration was measured using high performance liquid chromatography (HPLC). Temperature of 550 C and duration of the synthesis for 8 hours were determined to be the best conditions for the solid state reaction.
Anglický abstrakt
Heterogeneous photocatalysis is a very effective method for decomposition of a whole range of water pollutants. Lanthanides-doped titanium dioxide was chosen as a suitable photocatalytic material and the influence of synthesis conditions on physical properties, as well as on photocatalytic activity, was evaluated. Titanium dioxide was prepared via a sol-gel synthesis followed by a solid state reaction under different conditions such as various temperature (450C, 550C, 650C) and reaction time (4 hours, 8 hours, 12 hours). The crystalline phase was investigated using X-ray diffraction (XRD) and the results were confirmed by Raman spectroscopy. Structure, as well as particle size, were examined using scanning electron microscopy (SEM). Specific surface area was calculated from Brunauer-Emmett-Teller analysis (BET). Band gap energy was examined using ultraviolet-visible spectroscopy (UV-vis) from diffused reflectance measurement. Photocatalytic activity was studied as a degradation rate of the commonly used herbicide metazachlor. The decomposition was carried under UV light and the decreasing metazachlor concentration was measured using high performance liquid chromatography (HPLC). Temperature of 550 C and duration of the synthesis for 8 hours were determined to be the best conditions for the solid state reaction.
Klíčová slova
photocatalytical decomposition, metazachlor, lanthanides-doped titanium dioxide
Klíčová slova v angličtině
photocatalytical decomposition, metazachlor, lanthanides-doped titanium dioxide
Autoři
KRÁLOVÁ, M.; KAŠPÁREK, V., SILLANPAA, M.; LEVCHUK, I.; CIHLÁŘ, J.
Rok RIV
2016
Vydáno
10.02.2015
Nakladatel
Global Science and Technology Forum
Strany od
94
Strany do
100
Strany počet
7
Plný text v Digitální knihovně
BibTex
@misc{BUT113096,
author="KRÁLOVÁ, M. and KAŠPÁREK, V., SILLANPAA, M. and LEVCHUK, I. and CIHLÁŘ, J.",
title="Photocatalytic Decomposition of Metazachlor by Lanthanides-Doped Titanium Dioxide",
year="2015",
pages="94--100",
publisher="Global Science and Technology Forum"
}