Synthesis of potassium niobates by the microwave-assisted solvothermal method
Autor: | L M C Honorio, Thiago M. Duarte, Elson Longo, Ricardo L. Tranquilin, A. G. Souza, A. S. Maia, I. M. G. Santos, A. S. Brito, Juliana Kelly Dionízio de Souza |
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Rok vydání: | 2015 |
Předmět: | |
Zdroj: | IOP Conference Series: Materials Science and Engineering. 97:012001 |
ISSN: | 1757-899X 1757-8981 |
Popis: | Potassium niobates have been synthesized by different methods, but few papers use the microwave-assisted solvothermal method, with possibility of a deeper evaluation in this area. In this work, the synthesis of KNbO3, KNb3O8 and K4Nb6O17 was performed by calcinations of precursors obtained by the microwave-assisted solvothermal method. This study evaluates the influence of various synthesis parameters such as reaction time, pH of the reaction medium, K+ concentration in the precursor solution. The results show the formation of different niobates, KNbO3, KNb3O8, K4Nb6O17, depending on the short and long-range order of the precursor used in the post annealing process. |
Databáze: | OpenAIRE |
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