Photocatalytic efficiency of titanium oxide/molybdite oxide powder mixture
Coupling TiO2 with MoO3 is one of many strategies for the enhancement of titanium oxide photoabsorption under the solar light irradiation. TiO2 being a wide band-gap semiconductor with its unique properties (nontoxicity, photo and chemical stability, and low-cost) is a prominent material for the pho...
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| Dokumentumtípus: | Könyv része |
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2018
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| Sorozat: | Proceedings of the International Symposium on Analytical and Environmental Problems
24 |
| Kulcsszavak: | Fotokatalízis - előadáskivonat |
| Online Access: | http://acta.bibl.u-szeged.hu/56304 |
| Tartalmi kivonat: | Coupling TiO2 with MoO3 is one of many strategies for the enhancement of titanium oxide photoabsorption under the solar light irradiation. TiO2 being a wide band-gap semiconductor with its unique properties (nontoxicity, photo and chemical stability, and low-cost) is a prominent material for the photocatalytic applications but only when excited by the UV light [1]. Here we report for the first time the photocatalytic efficiency of mixed 2TiO2/MoO3 powders prepared using a simple, mechanochemical solid-state chemistry procedure at a relatively low temperature of 700 °C. Materials structure was examined by means of X-ray diffraction that confirmed the presence of three phases, rutile TiO2, anatase TiO2 and molybdite MoO3 [2]. A unique heterojunction structure with Ti-O-Mo bond between the TiO2 and MoO3 interfaces enables the solar light-driven photocatalytic reaction as well as more efficient separation of the photogenerated electrons and holes for the overall improvement of TiO2 photocatalytic performance. The mixed titanium oxide/molybdite oxide photocatalytic activity was examined under simulated solar irradiation and the experimental photocatalytic kinetics showed that the obtained 2TiO2/MoO3 powder mixture has a good potential for Visactivated degradation of ciprofloxacin, a widely used antibiotic for the treatment of a number of bacterial infections, which is the reason why it was continuously introduced into the environment through wastewaters, and therefore represents a potential risk for the living organisms. |
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| Terjedelem/Fizikai jellemzők: | 133 |
| ISBN: | 978-963-306-623-2 |