Cargando…
Influence of the Precursor Structure on the Formation of Tungsten Oxide Polymorphs
[Image: see text] Understanding material nucleation processes is crucial for the development of synthesis pathways for tailormade materials. However, we currently have little knowledge of the influence of the precursor solution structure on the formation pathway of materials. We here use in situ tot...
Autores principales: | , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2023
|
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10520979/ https://www.ncbi.nlm.nih.gov/pubmed/37658472 http://dx.doi.org/10.1021/acs.inorgchem.3c01659 |
_version_ | 1785110041394675712 |
---|---|
author | Juelsholt, Mikkel Aalling-Frederiksen, Olivia Lindahl Christiansen, Troels Kjær, Emil T. S. Lefeld, Niels Kirsch, Andrea Jensen, Kirsten M. Ø. |
author_facet | Juelsholt, Mikkel Aalling-Frederiksen, Olivia Lindahl Christiansen, Troels Kjær, Emil T. S. Lefeld, Niels Kirsch, Andrea Jensen, Kirsten M. Ø. |
author_sort | Juelsholt, Mikkel |
collection | PubMed |
description | [Image: see text] Understanding material nucleation processes is crucial for the development of synthesis pathways for tailormade materials. However, we currently have little knowledge of the influence of the precursor solution structure on the formation pathway of materials. We here use in situ total scattering to show how the precursor solution structure influences which crystal structure is formed during the hydrothermal synthesis of tungsten oxides. We investigate the synthesis of tungsten oxide from the two polyoxometalate salts, ammonium metatungstate, and ammonium paratungstate. In both cases, a hexagonal ammonium tungsten bronze (NH(4))(0.25)WO(3) is formed as the final product. If the precursor solution contains metatungstate clusters, this phase forms directly in the hydrothermal synthesis. However, if the paratungstate B cluster is present at the time of crystallization, a metastable intermediate phase in the form of a pyrochlore-type tungsten oxide, WO(3)·0.5H(2)O, initially forms. The pyrochlore structure then undergoes a phase transformation into the tungsten bronze phase. Our studies thus experimentally show that the precursor cluster structure present at the moment of crystallization directly influences the formed crystalline phase and suggests that the precursor structure just prior to crystallization can be used as a tool for targeting specific crystalline phases of interest. |
format | Online Article Text |
id | pubmed-10520979 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-105209792023-09-27 Influence of the Precursor Structure on the Formation of Tungsten Oxide Polymorphs Juelsholt, Mikkel Aalling-Frederiksen, Olivia Lindahl Christiansen, Troels Kjær, Emil T. S. Lefeld, Niels Kirsch, Andrea Jensen, Kirsten M. Ø. Inorg Chem [Image: see text] Understanding material nucleation processes is crucial for the development of synthesis pathways for tailormade materials. However, we currently have little knowledge of the influence of the precursor solution structure on the formation pathway of materials. We here use in situ total scattering to show how the precursor solution structure influences which crystal structure is formed during the hydrothermal synthesis of tungsten oxides. We investigate the synthesis of tungsten oxide from the two polyoxometalate salts, ammonium metatungstate, and ammonium paratungstate. In both cases, a hexagonal ammonium tungsten bronze (NH(4))(0.25)WO(3) is formed as the final product. If the precursor solution contains metatungstate clusters, this phase forms directly in the hydrothermal synthesis. However, if the paratungstate B cluster is present at the time of crystallization, a metastable intermediate phase in the form of a pyrochlore-type tungsten oxide, WO(3)·0.5H(2)O, initially forms. The pyrochlore structure then undergoes a phase transformation into the tungsten bronze phase. Our studies thus experimentally show that the precursor cluster structure present at the moment of crystallization directly influences the formed crystalline phase and suggests that the precursor structure just prior to crystallization can be used as a tool for targeting specific crystalline phases of interest. American Chemical Society 2023-09-01 /pmc/articles/PMC10520979/ /pubmed/37658472 http://dx.doi.org/10.1021/acs.inorgchem.3c01659 Text en © 2023 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Juelsholt, Mikkel Aalling-Frederiksen, Olivia Lindahl Christiansen, Troels Kjær, Emil T. S. Lefeld, Niels Kirsch, Andrea Jensen, Kirsten M. Ø. Influence of the Precursor Structure on the Formation of Tungsten Oxide Polymorphs |
title | Influence
of the Precursor Structure
on the Formation of Tungsten Oxide Polymorphs |
title_full | Influence
of the Precursor Structure
on the Formation of Tungsten Oxide Polymorphs |
title_fullStr | Influence
of the Precursor Structure
on the Formation of Tungsten Oxide Polymorphs |
title_full_unstemmed | Influence
of the Precursor Structure
on the Formation of Tungsten Oxide Polymorphs |
title_short | Influence
of the Precursor Structure
on the Formation of Tungsten Oxide Polymorphs |
title_sort | influence
of the precursor structure
on the formation of tungsten oxide polymorphs |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10520979/ https://www.ncbi.nlm.nih.gov/pubmed/37658472 http://dx.doi.org/10.1021/acs.inorgchem.3c01659 |
work_keys_str_mv | AT juelsholtmikkel influenceoftheprecursorstructureontheformationoftungstenoxidepolymorphs AT aallingfrederiksenolivia influenceoftheprecursorstructureontheformationoftungstenoxidepolymorphs AT lindahlchristiansentroels influenceoftheprecursorstructureontheformationoftungstenoxidepolymorphs AT kjæremilts influenceoftheprecursorstructureontheformationoftungstenoxidepolymorphs AT lefeldniels influenceoftheprecursorstructureontheformationoftungstenoxidepolymorphs AT kirschandrea influenceoftheprecursorstructureontheformationoftungstenoxidepolymorphs AT jensenkirstenmø influenceoftheprecursorstructureontheformationoftungstenoxidepolymorphs |