UV- and visible light active photocatalysts in solar heterogeneous photocatalysis = UV és látható fénnyel gerjeszthető fotokatalizátorok a napfényt hasznosító heterogén fotokatalízisben
In the present study, the photocatalytic efficiencies of 2 doped and 4 non-doped TiO2 photocatalysts were investigated in detail, applying solar- and different artificial irradiations. On one hand, in case of visible light irradiation, doped TiO2-s and rutile TiO2 showed much higher activity compare...
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| Dokumentumtípus: | Könyv része |
| Megjelent: |
2017
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| Sorozat: | Proceedings of the International Symposium on Analytical and Environmental Problems
23 |
| Kulcsszavak: | Fotokatalízis és napenergia, Napenergia felhasználása - fotokémia és fotokatalízis |
| Online Access: | http://acta.bibl.u-szeged.hu/56155 |
| Tartalmi kivonat: | In the present study, the photocatalytic efficiencies of 2 doped and 4 non-doped TiO2 photocatalysts were investigated in detail, applying solar- and different artificial irradiations. On one hand, in case of visible light irradiation, doped TiO2-s and rutile TiO2 showed much higher activity compared to Aeroxide P25. On the other hand, non-doped TiO2-s’ activity was much higher in the UV range than the investigated doped TiO2-s’. Since the calculated apparent quantum yields were 1-2 order of magnitudes lower in the visible range, than in the UV range, therefore non-doped titanium-dioxides had higher performance in case of solar light utilization despite the 1 order of magnitude lower quantity of UV photons in the solar light. Consequently, higher visible light activity not necessarily leads to higher performance in case of solar light irradiation. If higher solar light utilization efficiency is the aim during the development of a novel photocatalyst, UV excitability is also a crucial property, and needs to be investigated besides the red-shifted light absorbance and the high visible light activity. |
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| Terjedelem/Fizikai jellemzők: | 56-61 |
| ISBN: | 978-963-306-563-1 |