One-Pot, Low-Temperature Preparation of Pyrochlore-Like Na₂Ta₂O₆ Nanocrystals by Solvothermal Synthesis

Abstract:

In this paper, pyrochlore-like Na₂Ta₂O₆ nanocrystals have been successfully synthesized in mixed solvents (water-ethanol) by a single-step and low-temperature solvothermal method. During the synthesis process, tantalum chloride and sodium hydroxide are used as starting materials; diethanolamine is acted as a stabilizer. The influence of alkaline concentration, reaction temperature and time on the crystallinity and morphology of Na₂Ta₂O₆ nanocrystals is investigated in detail. The samples are characterized by X-ray diffraction and transmission electron microscope. The results show that the pure-phase pyrochlore-like Na₂Ta₂O₆ nanocrystals can be formed with 10.5 mmol sodium hydroxide at 353K for 12 h.

• Periodical: Key Engineering Materials (Volume 703)
• Pages: 267-272
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.703.267
• Online since: August 2016
• Authors: Qing Song Jiang*, Jian Gao, Hai Feng Yuan, Lu Rong Ding, Lin Yi
• Keywords: Low-Temperature, Na₂Ta₂O₆, Pyrochlore, Solvothermal Method

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