Cargando…
Hydrothermal topotactic epitaxy of SrTiO(3) on Bi(4)Ti(3)O(12) nanoplatelets: understanding the interplay of lattice mismatch and supersaturation
The engineering of epitaxial, two-dimensional (2D) nano-heterostructures has stimulated great interest owing to an expectation of better functional properties (e.g., photocatalytic, piezoelectric). Hydrothermal topotactic epitaxy is one of the promising synthetic approaches for their preparation, pa...
Autores principales: | , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
RSC
2023
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10228367/ https://www.ncbi.nlm.nih.gov/pubmed/37260496 http://dx.doi.org/10.1039/d2na00741j |
_version_ | 1785050949461475328 |
---|---|
author | Čontala, Alja Daneu, Nina Gupta, Suraj Spreitzer, Matjaž Meden, Anton Maček Kržmanc, Marjeta |
author_facet | Čontala, Alja Daneu, Nina Gupta, Suraj Spreitzer, Matjaž Meden, Anton Maček Kržmanc, Marjeta |
author_sort | Čontala, Alja |
collection | PubMed |
description | The engineering of epitaxial, two-dimensional (2D) nano-heterostructures has stimulated great interest owing to an expectation of better functional properties (e.g., photocatalytic, piezoelectric). Hydrothermal topotactic epitaxy is one of the promising synthetic approaches for their preparation, particularly the formation of a highly ordered, epitaxial interface and possibilities for the preparation of anisotropic nanostructures of symmetrical materials. The present study highlights the key parameters when steering the alkaline, hydrothermal, topochemical conversion process from Bi(4)Ti(3)O(12) nanoplatelets to the intermediate, epitaxial, SrTiO(3)/Bi(4)Ti(3)O(12) nano-heterostructures and the final SrTiO(3) nanoplatelets by balancing the lattice mismatch and the supersaturation. An atomic-scale examination revealed the formation of an ordered epitaxial SrTiO(3)/Bi(4)Ti(3)O(12) interface with the presence of dislocations. The SrTiO(3) grows in islands for a stoichiometric amount of Sr (Sr/Ti = 1) and the growth resembles a layer-by-layer mode for surplus Sr content (Sr/Ti ≥ 12). The latter enables SrTiO(3) overgrowth of the Bi(4)Ti(3)O(12) basal surface planes, protecting them against dissolution from the top and consequently ensuring the preservation of the platelet morphology during the entire transformation process, the kinetics of which is controlled by the base concentration. A developed understanding of this particular transformation provides the guiding principles and ideas for designing other defined or complex epitaxial heterostructures and structures under low-temperature hydrothermal conditions. |
format | Online Article Text |
id | pubmed-10228367 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | RSC |
record_format | MEDLINE/PubMed |
spelling | pubmed-102283672023-05-31 Hydrothermal topotactic epitaxy of SrTiO(3) on Bi(4)Ti(3)O(12) nanoplatelets: understanding the interplay of lattice mismatch and supersaturation Čontala, Alja Daneu, Nina Gupta, Suraj Spreitzer, Matjaž Meden, Anton Maček Kržmanc, Marjeta Nanoscale Adv Chemistry The engineering of epitaxial, two-dimensional (2D) nano-heterostructures has stimulated great interest owing to an expectation of better functional properties (e.g., photocatalytic, piezoelectric). Hydrothermal topotactic epitaxy is one of the promising synthetic approaches for their preparation, particularly the formation of a highly ordered, epitaxial interface and possibilities for the preparation of anisotropic nanostructures of symmetrical materials. The present study highlights the key parameters when steering the alkaline, hydrothermal, topochemical conversion process from Bi(4)Ti(3)O(12) nanoplatelets to the intermediate, epitaxial, SrTiO(3)/Bi(4)Ti(3)O(12) nano-heterostructures and the final SrTiO(3) nanoplatelets by balancing the lattice mismatch and the supersaturation. An atomic-scale examination revealed the formation of an ordered epitaxial SrTiO(3)/Bi(4)Ti(3)O(12) interface with the presence of dislocations. The SrTiO(3) grows in islands for a stoichiometric amount of Sr (Sr/Ti = 1) and the growth resembles a layer-by-layer mode for surplus Sr content (Sr/Ti ≥ 12). The latter enables SrTiO(3) overgrowth of the Bi(4)Ti(3)O(12) basal surface planes, protecting them against dissolution from the top and consequently ensuring the preservation of the platelet morphology during the entire transformation process, the kinetics of which is controlled by the base concentration. A developed understanding of this particular transformation provides the guiding principles and ideas for designing other defined or complex epitaxial heterostructures and structures under low-temperature hydrothermal conditions. RSC 2023-05-08 /pmc/articles/PMC10228367/ /pubmed/37260496 http://dx.doi.org/10.1039/d2na00741j Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by/3.0/ |
spellingShingle | Chemistry Čontala, Alja Daneu, Nina Gupta, Suraj Spreitzer, Matjaž Meden, Anton Maček Kržmanc, Marjeta Hydrothermal topotactic epitaxy of SrTiO(3) on Bi(4)Ti(3)O(12) nanoplatelets: understanding the interplay of lattice mismatch and supersaturation |
title | Hydrothermal topotactic epitaxy of SrTiO(3) on Bi(4)Ti(3)O(12) nanoplatelets: understanding the interplay of lattice mismatch and supersaturation |
title_full | Hydrothermal topotactic epitaxy of SrTiO(3) on Bi(4)Ti(3)O(12) nanoplatelets: understanding the interplay of lattice mismatch and supersaturation |
title_fullStr | Hydrothermal topotactic epitaxy of SrTiO(3) on Bi(4)Ti(3)O(12) nanoplatelets: understanding the interplay of lattice mismatch and supersaturation |
title_full_unstemmed | Hydrothermal topotactic epitaxy of SrTiO(3) on Bi(4)Ti(3)O(12) nanoplatelets: understanding the interplay of lattice mismatch and supersaturation |
title_short | Hydrothermal topotactic epitaxy of SrTiO(3) on Bi(4)Ti(3)O(12) nanoplatelets: understanding the interplay of lattice mismatch and supersaturation |
title_sort | hydrothermal topotactic epitaxy of srtio(3) on bi(4)ti(3)o(12) nanoplatelets: understanding the interplay of lattice mismatch and supersaturation |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10228367/ https://www.ncbi.nlm.nih.gov/pubmed/37260496 http://dx.doi.org/10.1039/d2na00741j |
work_keys_str_mv | AT contalaalja hydrothermaltopotacticepitaxyofsrtio3onbi4ti3o12nanoplateletsunderstandingtheinterplayoflatticemismatchandsupersaturation AT daneunina hydrothermaltopotacticepitaxyofsrtio3onbi4ti3o12nanoplateletsunderstandingtheinterplayoflatticemismatchandsupersaturation AT guptasuraj hydrothermaltopotacticepitaxyofsrtio3onbi4ti3o12nanoplateletsunderstandingtheinterplayoflatticemismatchandsupersaturation AT spreitzermatjaz hydrothermaltopotacticepitaxyofsrtio3onbi4ti3o12nanoplateletsunderstandingtheinterplayoflatticemismatchandsupersaturation AT medenanton hydrothermaltopotacticepitaxyofsrtio3onbi4ti3o12nanoplateletsunderstandingtheinterplayoflatticemismatchandsupersaturation AT macekkrzmancmarjeta hydrothermaltopotacticepitaxyofsrtio3onbi4ti3o12nanoplateletsunderstandingtheinterplayoflatticemismatchandsupersaturation |