| Autor: |
Zaharieva, Katerina, Karakashkova, Petya, Stoyanova, Daniela Stoyanova, Dimova, Silvia, Dimitrov, Ognian, Stambolova, Irina |
| Předmět: |
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| Zdroj: |
Journal of Chemical Technology & Metallurgy; 2023, Vol. 58 Issue 6, p1071-1079, 9p |
| Abstrakt: |
In the present study CeO2-Mn2O3 oxides catalyst was prepared using Pluronic-assisted co-precipitation. The phase composition, structure, morphology, specific surface area and textural characteristics of synthesized material were investigated by X-ray diffraction analysis, Fourier-transform infrared spectroscopy, Scanning electron microscopy, nitrogen adsorption-desorption isotherm and BET method. The X-ray diffraction analysis established the presence of CeO2 and Mn2O3 phases. The synthesized mesoporous CeO2-Mn2O3 oxides have specific surface area (SBET = 102 m² g-1), total pore volume (0.47 cm³ g-1) and average pore diameter (18 nm). The CeO2-Mn2O3 oxides catalyst was tested in two reactions - ozone decomposition and photocatalytic discoloration of Malachite Green (MG) dye as model pollutant under UV light. The ozone conversion over CeO2-Mn2O3 oxides catalyst was reached about 73 %. After that, the ozonated catalyst was tested in the photocatalytic reaction for removal of MG dye and its UV-light photocatalytic activity was compared with freshly prepared CeO2-Mn2O3 photocatalyst. The higher degree of discoloration of MG dye (62 %) was achieved in the presence of ozone treated CeO2-Mn2O3 oxides photocatalyst. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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