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TG and DSC investigation of water intercalation and protonation processes in perovskite-like layered structure of titanate K2Nd2Ti3O10

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Abstract

The article presents results of the complex study of hydration and protonation processes of promising photocatalysts K2Nd2Ti3O10, belonging to the family of perovskite-type layered Ruddlesden–Popper phases. K2Nd2Ti3O10 was synthesized by solid-state method and was monitored using powder X-ray diffraction. The behavior in water has been studied by means of thermogravimetric analysis, simultaneous thermal analysis and differential scanning calorimetry. The substitution of potassium cations for protons and the water intercalation into the interlayer space of the crystal structure were observed. Proton-containing layered oxides with general formula HxK2−xNd2Ti3O10·yH2O (0.07 ≤ x ≤ 1.7, 0.06 ≤ y ≤ 0.44) have been obtained.

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Acknowledgements

Scientific researches were performed at the Center for Thermogravimetric and Calorimetric Research and Research Centre for X-ray Diffraction Studies of Research Park of St. Petersburg State University and were financially supported by the Russian Foundation for Basic Research (Projects No. 15-03-05981 and No. 16-33-60082).

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Authors and Affiliations

  1. Saint Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg, Russia, 199034

    Tatiana Utkina, Mikhail Chislov, Oleg Silyukov, Alena Burovikhina & Irina Alexeevna Zvereva

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  1. Tatiana Utkina
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  2. Mikhail Chislov
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  3. Oleg Silyukov
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  4. Alena Burovikhina
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  5. Irina Alexeevna Zvereva
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Correspondence to Irina Alexeevna Zvereva.

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Utkina, T., Chislov, M., Silyukov, O. et al. TG and DSC investigation of water intercalation and protonation processes in perovskite-like layered structure of titanate K2Nd2Ti3O10 . J Therm Anal Calorim 125, 281–287 (2016). https://doi.org/10.1007/s10973-016-5377-y

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  • DOI: https://doi.org/10.1007/s10973-016-5377-y

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