Wyszukiwarka
Surface properties and photocatalytic activity of KTaO3, CdS, MoS2 semiconductors and their binary and ternary semiconductor composites
Abstrakt
Single semiconductors such as KTaO3, CdS MoS2 or their precursor solutions were combined to form novel binary and ternary semiconductor nanocomposites by the calcination or by the hydro/solvothermal mixed solutions methods, respectively. The aim of this work was to study the influence of preparation method as well as type and amount of the composite components on the surface properties and photocatalytic activity of the new semiconducting photoactive materials. We presented different binary and ternary combinations of the above semiconductors for phenol and toluene photocatalytic degradation and characterized by X-ray powder diffraction (XRD), UV-Vis diffuse reflectance spectroscopy (DRS), scanning electron microscopy (SEM), Brunauer–Emmett–Teller (BET) specific surface area and porosity. The results showed that loading MoS2 onto CdS as well as loading CdS onto KTaO3 significantly enhanced absorption properties as compared with single semiconductors. The highest photocatalytic activity in phenol degradation reaction under both UV-Vis and visible light irradiation and very good stability in toluene removal was observed for ternary hybrid obtained by calcination of KTaO3, CdS, MoS2 powders at the 10:5:1 molar ratio. Enhanced photoactivity could be related to the two-photon excitation in KTaO3-CdS-MoS2 composite under UV-Vis and/or to additional presence of CdMoO4 working as co-catalyst.
Autorzy (5)
Cytuj jako
Pełna treść
- Wersja publikacji
- Accepted albo Published Version
- Licencja
-
otwiera się w nowej karcie
Słowa kluczowe
Informacje szczegółowe
- Kategoria:
- Publikacja w czasopiśmie
- Typ:
- artykuł w czasopiśmie wyróżnionym w JCR
- Opublikowano w:
-
MOLECULES
nr 19,
strony 1 - 22,
ISSN: 1420-3049 - Język:
- angielski
- Rok wydania:
- 2014
- Opis bibliograficzny:
- Bajorowicz B., Malankowska A., Winiarski M. J., Klimczuk T., Zaleska-Medynska A.: Surface properties and photocatalytic activity of KTaO3, CdS, MoS2 semiconductors and their binary and ternary semiconductor composites// MOLECULES. -Vol. 19, iss. 9 (2014), s.1-22
- Weryfikacja:
- Politechnika Gdańska
wyświetlono 151 razy
Publikacje, które mogą cię zainteresować
Visible light photocatalysis employing TiO2/SrTiO3-BiOI composites: Surface properties and photoexcitation mechanism
- M. Marchelek,
- E. Grabowska,
- T. Klimczuk
- + 3 autorów
KTaO3-based nanocomposites for air treatment
- M. Martyna,
- B. Bajorowicz,
- P. Mazierski
- + 5 autorów
Effect of multi-walled carbon nanotubes properties on the photocatalytic activity of bismuth-based composites synthesised via an imidazolium ionic liquid
- A. Bielicka-giełdoń,
- P. Wilczewska,
- M. Paszkiewicz
- + 4 autorów
Perovskite-type KTaO3–reduced graphene oxide hybrid with improved visible light photocatalytic activity
- B. Bajorowicz,
- J. Reszczyńska,
- W. Lisowski
- + 4 autorów