KTaO3 a perovskite for water and air treatment

• Authors: Anna Różańska , Jacek Namieśnik
• Languages of publication: EN

Abstracts

EN

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 Fe-doping reduced photocatalytic activity.

Keywords

EN

hydrothermal method; perovskite; photocatalytic activity; potassium tantalate; transitions metals

Discipline

• ENVIRONMENT_&_ECOLOGY: ENVIRONMENT & ECOLOGY

• Publisher: Scientific Publishing House „DARWIN”
• Journal: World Scientific News
• Year: 2017
• Volume: 75
• Pages: 73-80

Contributors

author

Anna Różańska

• Department of Analytical Chemistry, Faculty of Chemistry, Gdansk University of Technology, 11/12 Gabriela Narutowicza Str., Gdansk, Poland

author

Jacek Namieśnik

• Department of Analytical Chemistry, Faculty of Chemistry, Gdansk University of Technology, 11/12 Gabriela Narutowicza Str., Gdansk, Poland

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• Document Type: article