Topochemical synthesis of a high-aspect-ratio platelet NaNbO3 template

Yongke Yan, Dan Liu, Wei Zhao, Heping Zhou, Hui Fang

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37 Citations (SciVal)


A high-aspect-ratio platelet sodium niobate (NaNbO3) was synthesized by a topochemical reaction. Plate-like layered-perovskite Bi2.5Na3.5Nb5O18 (BNN5) as a precursor was first prepared, and then Bi3+ in the precursor phase was replaced by Na+ through topotactic conversion and perovskite NaNbO3 formed at 950°C in NaCl molten salt. NaNbO3 crystals had an average length of 15 μm and a thickness of 0.5 μm. Scanning electron microscope and high-resolution transmission electron microscope analyses indicated that the retro-synthesis process of the desired perovskite NaNbO3 retained the morphological and structural features of the BNN5 precursor. It may be possible to synthesize other perovskite-structured templates using the same method.

Original languageEnglish (US)
Pages (from-to)2399-2403
Number of pages5
JournalJournal of the American Ceramic Society
Issue number8
StatePublished - Aug 2007

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry


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