Synthesis and high-resolution structural and chemical analysis of iron-manganese-oxide core-shell nanocubes

We have investigated the structure and chemical composition of nanoparticles synthesized by thermal decomposition of a mixture of iron oleate and manganese oleate in a high-boiling solvent in the presence of Na-oleate and oleic acid as surfactants by analytical transmission electron microscopy (TEM)...

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Autores principales: Ullrich, Aladin, Rahman, Mohammad Mostafizar, Longo, Paolo, Horn, Siegfried
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6917765/
https://www.ncbi.nlm.nih.gov/pubmed/31848357
http://dx.doi.org/10.1038/s41598-019-55397-z
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author Ullrich, Aladin
Rahman, Mohammad Mostafizar
Longo, Paolo
Horn, Siegfried
author_facet Ullrich, Aladin
Rahman, Mohammad Mostafizar
Longo, Paolo
Horn, Siegfried
author_sort Ullrich, Aladin
collection PubMed
description We have investigated the structure and chemical composition of nanoparticles synthesized by thermal decomposition of a mixture of iron oleate and manganese oleate in a high-boiling solvent in the presence of Na-oleate and oleic acid as surfactants by analytical transmission electron microscopy (TEM). The particles appear core-shell like in bright field TEM images. Higher spatial resolution TEM (HRTEM) analysis reveals a FeO/MnO like structure in the core and a spinel like structure in the shell. With high-resolution analytical methods like energy dispersive x-ray spectroscopy (EDS) and electron energy loss spectroscopy (EELS), the distribution of the metals Mn and Fe was investigated. Differences in the oxidation state of these metals were found between the core and the shell region. The presence of sodium from the used surfactant (Na-oleate) on the surface of the particles has been proved.
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spelling pubmed-69177652019-12-19 Synthesis and high-resolution structural and chemical analysis of iron-manganese-oxide core-shell nanocubes Ullrich, Aladin Rahman, Mohammad Mostafizar Longo, Paolo Horn, Siegfried Sci Rep Article We have investigated the structure and chemical composition of nanoparticles synthesized by thermal decomposition of a mixture of iron oleate and manganese oleate in a high-boiling solvent in the presence of Na-oleate and oleic acid as surfactants by analytical transmission electron microscopy (TEM). The particles appear core-shell like in bright field TEM images. Higher spatial resolution TEM (HRTEM) analysis reveals a FeO/MnO like structure in the core and a spinel like structure in the shell. With high-resolution analytical methods like energy dispersive x-ray spectroscopy (EDS) and electron energy loss spectroscopy (EELS), the distribution of the metals Mn and Fe was investigated. Differences in the oxidation state of these metals were found between the core and the shell region. The presence of sodium from the used surfactant (Na-oleate) on the surface of the particles has been proved. Nature Publishing Group UK 2019-12-17 /pmc/articles/PMC6917765/ /pubmed/31848357 http://dx.doi.org/10.1038/s41598-019-55397-z Text en © The Author(s) 2019 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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Ullrich, Aladin
Rahman, Mohammad Mostafizar
Longo, Paolo
Horn, Siegfried
Synthesis and high-resolution structural and chemical analysis of iron-manganese-oxide core-shell nanocubes
title Synthesis and high-resolution structural and chemical analysis of iron-manganese-oxide core-shell nanocubes
title_full Synthesis and high-resolution structural and chemical analysis of iron-manganese-oxide core-shell nanocubes
title_fullStr Synthesis and high-resolution structural and chemical analysis of iron-manganese-oxide core-shell nanocubes
title_full_unstemmed Synthesis and high-resolution structural and chemical analysis of iron-manganese-oxide core-shell nanocubes
title_short Synthesis and high-resolution structural and chemical analysis of iron-manganese-oxide core-shell nanocubes
title_sort synthesis and high-resolution structural and chemical analysis of iron-manganese-oxide core-shell nanocubes
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6917765/
https://www.ncbi.nlm.nih.gov/pubmed/31848357
http://dx.doi.org/10.1038/s41598-019-55397-z
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AT hornsiegfried synthesisandhighresolutionstructuralandchemicalanalysisofironmanganeseoxidecoreshellnanocubes

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