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The reaction and crystallization mechanism of K 2 Ti 2 O 5 fibers from amorphous titania and K 2 CO 3 by a calcination method at low temperatures are investigated in this study. K 2 Ti 2 O 5 nuclei are formed in the solid-state reaction stage at 640 °C due to the suppression of TiO 2 crystal growth in the presence of K 2 CO 3 . K 2 Ti 2 O 5 nanofibers are obtained in the crystallization stage at 820 °C due to the appearance of K 2 O melts. The separation between the nucleation and the fiber growth process is critical to control the morphologies and microstructures of K 2 Ti 2 O 5 fibers at low temperatures.
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Liu et al. (2005) studied this question.
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