KTaO3 a perovskite for water and air treatment

Anna Różańska; Jacek Namieśnik

KTaO3 a perovskite for water and air treatment

Abstract

Perovskites are inorganic compounds that exhibit dielectric properties. These minerals belong to the crystal ceramics family. These compounds are described by the formula: ABX3 where, A and B are 2, 3 or 4 valuable metal ions, and X is an ion of oxygen or fluorine. An example of perovskite is the compound KTaO3. There are many methods for producing KTaO3, but the hydrothermal method is most commonly used. Perovskites can be characterized by magnetic, photocatalytic and electrical properties. For this reason, the most effective methods for obtaining perovskite structures are sought, and research methods for their characterization are developed. In this thesis, KTa0.8A0.2O3 (A = Co, Fe, Ni) was obtained by hydrothermal method. The influence of dopants on the photocatalytic was verified. As a result of experiments, it was found that two samples had a single phase the pyrochlore structure (KTaO3 and KTa0.8Fe0.2O3). The Ni-doping increased photocatalytic activity, while Fedoping reduced photocatalytic activity.

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Category:: Articles
Type:: artykuły w czasopismach recenzowanych i innych wydawnictwach ciągłych
Published in:: World Scientific News no. 75, pages 73 - 80,
ISSN:
Language:: English
Publication year:: 2017
Bibliographic description:: Różańska A., Namieśnik J.: KTaO3 a perovskite for water and air treatment// World Scientific News. -Vol. 75., (2017), s.73-80
Verified by:: Gdańsk University of Technology