Formation of polymorphs and pores in small nanocrystalline iron oxide particles

A novel chemical vapor synthesis reactor design is used to control the pore-particle mesostructure and investigate the pore formation mechanism through the variation of residence time in oxygen. This enables the exploitation of the Kirkendall effect at the nanoscale to generate ultrasmall pores in s...

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Autores principales: Levish, Alexander, Winterer, Markus
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9467998/
https://www.ncbi.nlm.nih.gov/pubmed/36097019
http://dx.doi.org/10.1038/s41598-022-19276-4
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author Levish, Alexander
Winterer, Markus
author_facet Levish, Alexander
Winterer, Markus
author_sort Levish, Alexander
collection PubMed
description A novel chemical vapor synthesis reactor design is used to control the pore-particle mesostructure and investigate the pore formation mechanism through the variation of residence time in oxygen. This enables the exploitation of the Kirkendall effect at the nanoscale to generate ultrasmall pores in small nanocrystalline iron oxide particles. Detailed structural characterization and quantitative data analysis of complementary high resolution transmission electron microscopy images, X-ray diffractograms, nitrogen sorption isotherms and X-ray absorption spectra provide a consistent comprehensive picture of the hollow nanoparticles from the local to the microstructure. The pore formation mechanism seems to play a key role for β-Fe(2)O(3) polymorph formation.
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spelling pubmed-94679982022-09-14 Formation of polymorphs and pores in small nanocrystalline iron oxide particles Levish, Alexander Winterer, Markus Sci Rep Article A novel chemical vapor synthesis reactor design is used to control the pore-particle mesostructure and investigate the pore formation mechanism through the variation of residence time in oxygen. This enables the exploitation of the Kirkendall effect at the nanoscale to generate ultrasmall pores in small nanocrystalline iron oxide particles. Detailed structural characterization and quantitative data analysis of complementary high resolution transmission electron microscopy images, X-ray diffractograms, nitrogen sorption isotherms and X-ray absorption spectra provide a consistent comprehensive picture of the hollow nanoparticles from the local to the microstructure. The pore formation mechanism seems to play a key role for β-Fe(2)O(3) polymorph formation. Nature Publishing Group UK 2022-09-12 /pmc/articles/PMC9467998/ /pubmed/36097019 http://dx.doi.org/10.1038/s41598-022-19276-4 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Levish, Alexander
Winterer, Markus
Formation of polymorphs and pores in small nanocrystalline iron oxide particles
title Formation of polymorphs and pores in small nanocrystalline iron oxide particles
title_full Formation of polymorphs and pores in small nanocrystalline iron oxide particles
title_fullStr Formation of polymorphs and pores in small nanocrystalline iron oxide particles
title_full_unstemmed Formation of polymorphs and pores in small nanocrystalline iron oxide particles
title_short Formation of polymorphs and pores in small nanocrystalline iron oxide particles
title_sort formation of polymorphs and pores in small nanocrystalline iron oxide particles
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9467998/
https://www.ncbi.nlm.nih.gov/pubmed/36097019
http://dx.doi.org/10.1038/s41598-022-19276-4
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AT winterermarkus formationofpolymorphsandporesinsmallnanocrystallineironoxideparticles

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