Adsorption of Precursors on Substrates in the Presence of scCO<sub>2</sub> for the Synthesis of Supported Metallic Nanoparticles: Experiments and Modeling
Supercritical fluid reactive deposition is an environmentally friendly technique for the synthesis of supported mono- or bimetallic nanoparticles. Experimental results show that the adsorption of a precursor on a substrate is the crucial process step that controls the loading and the size of the dep...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-04-01
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| Series: | Fluids |
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| Online Access: | https://www.mdpi.com/2311-5521/8/4/121 |
| _version_ | 1797605483457019904 |
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| author | Marlene Crone Michael Türk |
| author_facet | Marlene Crone Michael Türk |
| author_sort | Marlene Crone |
| collection | DOAJ |
| description | Supercritical fluid reactive deposition is an environmentally friendly technique for the synthesis of supported mono- or bimetallic nanoparticles. Experimental results show that the adsorption of a precursor on a substrate is the crucial process step that controls the loading and the size of the deposited metal nanoparticles. In this review, an overview of experimental and modeling work is given and selected experimental data were correlated with the following adsorption isotherm models: Henry, Freundlich, Langmuir, Toth, and Langmuir–Freundlich equations. As a result, in the case of precursors with a low CO<sub>2</sub> solubility and therewith low uptake, the adsorption behavior can be described with sufficient accuracy by the Henry approach. Furthermore, the Freundlich and Langmuir equations enable sufficiently accurate descriptions of the experimental data. In the end, strategies for overcoming the knowledge gaps for essential future research directions are suggested. |
| first_indexed | 2024-03-11T05:01:44Z |
| format | Article |
| id | doaj.art-08fd628a403b40348f6e57e7a29b15f6 |
| institution | Directory Open Access Journal |
| issn | 2311-5521 |
| language | English |
| last_indexed | 2024-03-11T05:01:44Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Fluids |
| spelling | doaj.art-08fd628a403b40348f6e57e7a29b15f62023-11-17T19:13:10ZengMDPI AGFluids2311-55212023-04-018412110.3390/fluids8040121Adsorption of Precursors on Substrates in the Presence of scCO<sub>2</sub> for the Synthesis of Supported Metallic Nanoparticles: Experiments and ModelingMarlene Crone0Michael Türk1Institute for Technical Thermodynamics and Refrigeration, Karlsruhe Institute of Technology (KIT), Engler-Bunte-Ring 21, 76131 Karlsruhe, GermanyInstitute for Technical Thermodynamics and Refrigeration, Karlsruhe Institute of Technology (KIT), Engler-Bunte-Ring 21, 76131 Karlsruhe, GermanySupercritical fluid reactive deposition is an environmentally friendly technique for the synthesis of supported mono- or bimetallic nanoparticles. Experimental results show that the adsorption of a precursor on a substrate is the crucial process step that controls the loading and the size of the deposited metal nanoparticles. In this review, an overview of experimental and modeling work is given and selected experimental data were correlated with the following adsorption isotherm models: Henry, Freundlich, Langmuir, Toth, and Langmuir–Freundlich equations. As a result, in the case of precursors with a low CO<sub>2</sub> solubility and therewith low uptake, the adsorption behavior can be described with sufficient accuracy by the Henry approach. Furthermore, the Freundlich and Langmuir equations enable sufficiently accurate descriptions of the experimental data. In the end, strategies for overcoming the knowledge gaps for essential future research directions are suggested.https://www.mdpi.com/2311-5521/8/4/121supercritical adsorptionprecursorsubstratesolubilityscCO<sub>2</sub>adsorption isotherm models |
| spellingShingle | Marlene Crone Michael Türk Adsorption of Precursors on Substrates in the Presence of scCO<sub>2</sub> for the Synthesis of Supported Metallic Nanoparticles: Experiments and Modeling Fluids supercritical adsorption precursor substrate solubility scCO<sub>2</sub> adsorption isotherm models |
| title | Adsorption of Precursors on Substrates in the Presence of scCO<sub>2</sub> for the Synthesis of Supported Metallic Nanoparticles: Experiments and Modeling |
| title_full | Adsorption of Precursors on Substrates in the Presence of scCO<sub>2</sub> for the Synthesis of Supported Metallic Nanoparticles: Experiments and Modeling |
| title_fullStr | Adsorption of Precursors on Substrates in the Presence of scCO<sub>2</sub> for the Synthesis of Supported Metallic Nanoparticles: Experiments and Modeling |
| title_full_unstemmed | Adsorption of Precursors on Substrates in the Presence of scCO<sub>2</sub> for the Synthesis of Supported Metallic Nanoparticles: Experiments and Modeling |
| title_short | Adsorption of Precursors on Substrates in the Presence of scCO<sub>2</sub> for the Synthesis of Supported Metallic Nanoparticles: Experiments and Modeling |
| title_sort | adsorption of precursors on substrates in the presence of scco sub 2 sub for the synthesis of supported metallic nanoparticles experiments and modeling |
| topic | supercritical adsorption precursor substrate solubility scCO<sub>2</sub> adsorption isotherm models |
| url | https://www.mdpi.com/2311-5521/8/4/121 |
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