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Synthesis and Characterization of K-Ta Mixed Oxides for Hydrogen Generation in Photocatalysis
Joint Authors
Mijowska, Ewa
Zielińska, Beata
Kalenczuk, Ryszard J.
Source
International Journal of Photoenergy
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-06-10
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
K-Ta mixed oxides photocatalysts have been prepared by impregnation followed by calcination.
The influence of the reaction temperature (450°C–900°C) on the phase formation, crystal morphology, and photocatalytic activity in hydrogen generation of the produced materials was investigated.
The detailed analysis has revealed that all products exhibit high crystallinity and irregular structure.
Moreover, two different crystal structures of potassium tantalates such as KTaO3 and K2Ta4O11 were obtained.
It was also found that the sample composed of KTaO3 and traces of unreacted Ta2O5 (annealed at 600°C) exhibits the highest activity in the reaction of photocatalytic hydrogen generation.
The crystallographic phases, optical and vibronic properties were examined by X-ray diffraction (XRD) and diffuse reflectance (DR) UV-vis and resonance Raman spectroscopic methods, respectively.
Morphology and chemical composition of the produced samples were studied using a high-resolution transmission electron microscope (HR-TEM) and an energy dispersive X-ray spectrometer (EDX) as its mode.
American Psychological Association (APA)
Zielińska, Beata& Mijowska, Ewa& Kalenczuk, Ryszard J.. 2012. Synthesis and Characterization of K-Ta Mixed Oxides for Hydrogen Generation in Photocatalysis. International Journal of Photoenergy،Vol. 2012, no. 2012, pp.1-7.
https://search.emarefa.net/detail/BIM-478651
Modern Language Association (MLA)
Zielińska, Beata…[et al.]. Synthesis and Characterization of K-Ta Mixed Oxides for Hydrogen Generation in Photocatalysis. International Journal of Photoenergy No. 2012 (2012), pp.1-7.
https://search.emarefa.net/detail/BIM-478651
American Medical Association (AMA)
Zielińska, Beata& Mijowska, Ewa& Kalenczuk, Ryszard J.. Synthesis and Characterization of K-Ta Mixed Oxides for Hydrogen Generation in Photocatalysis. International Journal of Photoenergy. 2012. Vol. 2012, no. 2012, pp.1-7.
https://search.emarefa.net/detail/BIM-478651
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-478651