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Title: Phase transformations during HLnTiO{sub 4} (Ln=La, Nd) thermolysis and photocatalytic activity of obtained compounds

Abstract

Layered HLnTiO{sub 4} (Ln=La, Nd) compounds belonging to Ruddlesden–Popper phases were found to form partially hydrated compounds Ln{sub 2}Ti{sub 2}O{sub 7}·xH{sub 2}O during thermal dehydration as well as defect oxides Ln{sub 2}□Ti{sub 2}O{sub 7} as final products. Further heating of metastable defect Ln{sub 2}□Ti{sub 2}O{sub 7} substances leads to the formation of pyrochlore-type oxides Ln{sub 2}Ti{sub 2}O{sub 7} {sub (p)}, with subsequent transformation under higher temperatures to stable layered 110-type perovskites Ln{sub 2}Ti{sub 2}O{sub 7}. The occurring structure transformations lead to an increase of photocatalytic activity in the order of HLnTiO{sub 4}

Authors:
; ; ;
Publication Date:
OSTI Identifier:
22475642
Resource Type:
Journal Article
Journal Name:
Journal of Solid State Chemistry
Additional Journal Information:
Journal Volume: 226; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0022-4596
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; DEHYDRATION; HYDRATES; HYDROGEN COMPOUNDS; LANTHANUM COMPOUNDS; NEODYMIUM COMPOUNDS; PEROVSKITE; PHASE TRANSFORMATIONS; PHOTOCATALYSIS; PROPANOLS; PYROCHLORE; SOLIDS; TEMPERATURE DEPENDENCE; TITANATES; X-RAY DIFFRACTION

Citation Formats

Silyukov, Oleg I., E-mail: olegsilyukov@yandex.ru, Abdulaeva, Liliia D., Burovikhina, Alena A., Rodionov, Ivan A., and Zvereva, Irina A. Phase transformations during HLnTiO{sub 4} (Ln=La, Nd) thermolysis and photocatalytic activity of obtained compounds. United States: N. p., 2015. Web. doi:10.1016/J.JSSC.2015.02.008.
Silyukov, Oleg I., E-mail: olegsilyukov@yandex.ru, Abdulaeva, Liliia D., Burovikhina, Alena A., Rodionov, Ivan A., & Zvereva, Irina A. Phase transformations during HLnTiO{sub 4} (Ln=La, Nd) thermolysis and photocatalytic activity of obtained compounds. United States. https://doi.org/10.1016/J.JSSC.2015.02.008
Silyukov, Oleg I., E-mail: olegsilyukov@yandex.ru, Abdulaeva, Liliia D., Burovikhina, Alena A., Rodionov, Ivan A., and Zvereva, Irina A. 2015. "Phase transformations during HLnTiO{sub 4} (Ln=La, Nd) thermolysis and photocatalytic activity of obtained compounds". United States. https://doi.org/10.1016/J.JSSC.2015.02.008.
@article{osti_22475642,
title = {Phase transformations during HLnTiO{sub 4} (Ln=La, Nd) thermolysis and photocatalytic activity of obtained compounds},
author = {Silyukov, Oleg I., E-mail: olegsilyukov@yandex.ru and Abdulaeva, Liliia D. and Burovikhina, Alena A. and Rodionov, Ivan A. and Zvereva, Irina A.},
abstractNote = {Layered HLnTiO{sub 4} (Ln=La, Nd) compounds belonging to Ruddlesden–Popper phases were found to form partially hydrated compounds Ln{sub 2}Ti{sub 2}O{sub 7}·xH{sub 2}O during thermal dehydration as well as defect oxides Ln{sub 2}□Ti{sub 2}O{sub 7} as final products. Further heating of metastable defect Ln{sub 2}□Ti{sub 2}O{sub 7} substances leads to the formation of pyrochlore-type oxides Ln{sub 2}Ti{sub 2}O{sub 7} {sub (p)}, with subsequent transformation under higher temperatures to stable layered 110-type perovskites Ln{sub 2}Ti{sub 2}O{sub 7}. The occurring structure transformations lead to an increase of photocatalytic activity in the order of HLnTiO{sub 4}},
doi = {10.1016/J.JSSC.2015.02.008},
url = {https://www.osti.gov/biblio/22475642}, journal = {Journal of Solid State Chemistry},
issn = {0022-4596},
number = ,
volume = 226,
place = {United States},
year = {Sun Mar 15 00:00:00 EDT 2015},
month = {Sun Mar 15 00:00:00 EDT 2015}
}