Preparation of the NaTaO<sub>3</sub> Crystal from the KTaO<sub>3</sub> Substrate via Topotactic Alkaline Cation Substitution as Confirmed by Transmission Electron Microscopy
Abstract:Orthorhombic-type sodium tantalite (NaTaO 3 ) is one of the most promising photocatalyst for hydrogen generation via water splitting reaction with ultraviolet-irradiation. In this research, we prepared NaTaO 3 crystal from KTaO 3 substrate via solid-state K + −Na + alkaline cation substitution. In the transmission electron microscopy (TEM) observation revealed the perovskite-type KTaO 3 crystal phase is transformed into the orthorhombic crystal phase via simple heating of KTaO 3 substrate with Na 2 O 2 . Atomi… Show more
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