Applying SAXS to study the structuring of Fe3O4 magnetic nanoparticles in colloidal suspensions
In this work, Small Angle X-ray Scattering (SAXS) patterns, obtained from two different aqueous colloidal suspensions of magnetite nanoparticles electrostatically stabilized with citric acid, were fitted using three different mathematical models in order to describe the particle size distribution an...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Universidad Nacional de Colombia
2019-04-01
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| Series: | Dyna |
| Subjects: | |
| Online Access: | https://revistas.unal.edu.co/index.php/dyna/article/view/73450 |
| _version_ | 1818806209575124992 |
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| author | Jenny Mera Cordoba Diego Fernando Coral-Coral |
| author_facet | Jenny Mera Cordoba Diego Fernando Coral-Coral |
| author_sort | Jenny Mera Cordoba |
| collection | DOAJ |
| description | In this work, Small Angle X-ray Scattering (SAXS) patterns, obtained from two different aqueous colloidal suspensions of magnetite nanoparticles electrostatically stabilized with citric acid, were fitted using three different mathematical models in order to describe the particle size distribution and aggregation state. The colloidal suspensions differ in the mean particle size (4.5±1.0 nm and 5.5±1.1 nm) and the aqueous stabilization, allowing control of the strength of the interaction strength between particles. The models used for SAXS analysis, reveal that the particles are almost spherical with a broad size distribution, and that particles in each suspension are aggregated and are subject to an attractive interaction potential, typical for magnetic nanoparticles. For the better-stabilized sample, ramified chain-like aggregates were found, and for the less-stabilized sample, a more compact structure was determined. The size distribution obtained by applying SAXS mathematical models are in agreement with the size distribution determined using Transmission Electronic Microscopy
(TEM) |
| first_indexed | 2024-12-18T19:06:08Z |
| format | Article |
| id | doaj.art-a962f65ba16c4d2ea97de2d8847f095b |
| institution | Directory Open Access Journal |
| issn | 0012-7353 2346-2183 |
| language | English |
| last_indexed | 2024-12-18T19:06:08Z |
| publishDate | 2019-04-01 |
| publisher | Universidad Nacional de Colombia |
| record_format | Article |
| series | Dyna |
| spelling | doaj.art-a962f65ba16c4d2ea97de2d8847f095b2022-12-21T20:56:25ZengUniversidad Nacional de ColombiaDyna0012-73532346-21832019-04-018620913514010.15446/dyna.v86n209.7345050943Applying SAXS to study the structuring of Fe3O4 magnetic nanoparticles in colloidal suspensionsJenny Mera Cordoba0Diego Fernando Coral-CoralInstitución Universitaria CESMAGIn this work, Small Angle X-ray Scattering (SAXS) patterns, obtained from two different aqueous colloidal suspensions of magnetite nanoparticles electrostatically stabilized with citric acid, were fitted using three different mathematical models in order to describe the particle size distribution and aggregation state. The colloidal suspensions differ in the mean particle size (4.5±1.0 nm and 5.5±1.1 nm) and the aqueous stabilization, allowing control of the strength of the interaction strength between particles. The models used for SAXS analysis, reveal that the particles are almost spherical with a broad size distribution, and that particles in each suspension are aggregated and are subject to an attractive interaction potential, typical for magnetic nanoparticles. For the better-stabilized sample, ramified chain-like aggregates were found, and for the less-stabilized sample, a more compact structure was determined. The size distribution obtained by applying SAXS mathematical models are in agreement with the size distribution determined using Transmission Electronic Microscopy (TEM)https://revistas.unal.edu.co/index.php/dyna/article/view/73450SAXSnanoparticlesmathematical modelaggregation |
| spellingShingle | Jenny Mera Cordoba Diego Fernando Coral-Coral Applying SAXS to study the structuring of Fe3O4 magnetic nanoparticles in colloidal suspensions Dyna SAXS nanoparticles mathematical model aggregation |
| title | Applying SAXS to study the structuring of Fe3O4 magnetic nanoparticles in colloidal suspensions |
| title_full | Applying SAXS to study the structuring of Fe3O4 magnetic nanoparticles in colloidal suspensions |
| title_fullStr | Applying SAXS to study the structuring of Fe3O4 magnetic nanoparticles in colloidal suspensions |
| title_full_unstemmed | Applying SAXS to study the structuring of Fe3O4 magnetic nanoparticles in colloidal suspensions |
| title_short | Applying SAXS to study the structuring of Fe3O4 magnetic nanoparticles in colloidal suspensions |
| title_sort | applying saxs to study the structuring of fe3o4 magnetic nanoparticles in colloidal suspensions |
| topic | SAXS nanoparticles mathematical model aggregation |
| url | https://revistas.unal.edu.co/index.php/dyna/article/view/73450 |
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