New insights into polymer mediated formation of anatase mesocrystals

Boytsova V. Olga*, Alexey A. Sadovnikov, Khursand E. Yorov, Artemii N. Beltiukov, Alexander E. Baranchikov, Vladimir K. Ivanov, Xiangli Zhong, David J. Lewis, Paul O'Brien, Andrew J. Sutherland

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

The reaction between (NH4)2TiF6 and H3BO3 in the presence of varying quantities of PEG-6000 was used to form NH4TiOF3 mesocrystals (MCs). The amount of PEG-6000, employed as a template, is crucial to the formation of defect free, non-agglomerated NH4TiOF3 MCs; high concentrations lead to MC agglomeration, lower ones result in centralized defects. This polymer-mediated formation process may be understood using an analogy with known polymerization reactions. The oxofluorotitanate MCs readily undergo a thermal topotactic transformation to give anatase MCs with photocatalytic activity. The TiO2 MCs are porous, with highly orientated lamellar crystallites that form part of the larger mesocrystal structure.
Original languageEnglish
Pages (from-to)3281-3287
Number of pages7
JournalCrystengcomm
Volume19
Issue number24
Early online date23 May 2017
DOIs
Publication statusPublished - 2017

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    Olga, B. V., Sadovnikov, A. A., Yorov, K. E., Beltiukov, A. N., Baranchikov, A. E., Ivanov, V. K., Zhong, X., Lewis, D. J., O'Brien, P., & Sutherland, A. J. (2017). New insights into polymer mediated formation of anatase mesocrystals. Crystengcomm, 19(24), 3281-3287. https://doi.org/10.1039/C6CE01985D