Ferric Ion Diffusion for MOF-Polymer Composite with Internal Boundary Sinks
Simple and economical ferric ion detection is necessary in many industries. An europium-based metal organic framework has selective sensing properties for solutions containing ferric ions and shows promise as a key component in a new sensor. We study an idealised sensor that consists of metal organi...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-03-01
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| Series: | Nanomaterials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2079-4991/12/5/887 |
| _version_ | 1827650944025755648 |
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| author | Kirsten I. Louw Bronwyn H. Bradshaw-Hajek James M. Hill |
| author_facet | Kirsten I. Louw Bronwyn H. Bradshaw-Hajek James M. Hill |
| author_sort | Kirsten I. Louw |
| collection | DOAJ |
| description | Simple and economical ferric ion detection is necessary in many industries. An europium-based metal organic framework has selective sensing properties for solutions containing ferric ions and shows promise as a key component in a new sensor. We study an idealised sensor that consists of metal organic framework (MOF) crystals placed on a polymer surface. A two-dimensional diffusion model is used to predict the movement of ferric ions through the solution and polymer, and the ferric ion association to a MOF crystal at the boundary between the different media. A simplified one-dimensional model identifies the choice of appropriate values for the dimensionless parameters required to optimise the time for a MOF crystal to reach steady state. The model predicts that a large non-dimensional diffusion coefficient and an effective association with a small effective flux will reduce the time to steady-state. The effective dissociation is the most significant parameter to aid the estimation of the ferric ion concentration. This paper provides some theoretical insight for material scientists to optimise the design of a new ferric ion sensor. |
| first_indexed | 2024-03-09T20:27:08Z |
| format | Article |
| id | doaj.art-524a470d93fc4bd5aae98005e9c6cbd7 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-09T20:27:08Z |
| publishDate | 2022-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-524a470d93fc4bd5aae98005e9c6cbd72023-11-23T23:31:40ZengMDPI AGNanomaterials2079-49912022-03-0112588710.3390/nano12050887Ferric Ion Diffusion for MOF-Polymer Composite with Internal Boundary SinksKirsten I. Louw0Bronwyn H. Bradshaw-Hajek1James M. Hill2UniSA STEM, University of South Australia, Mawson Lakes, SA 5095, AustraliaUniSA STEM, University of South Australia, Mawson Lakes, SA 5095, AustraliaUniSA STEM, University of South Australia, Mawson Lakes, SA 5095, AustraliaSimple and economical ferric ion detection is necessary in many industries. An europium-based metal organic framework has selective sensing properties for solutions containing ferric ions and shows promise as a key component in a new sensor. We study an idealised sensor that consists of metal organic framework (MOF) crystals placed on a polymer surface. A two-dimensional diffusion model is used to predict the movement of ferric ions through the solution and polymer, and the ferric ion association to a MOF crystal at the boundary between the different media. A simplified one-dimensional model identifies the choice of appropriate values for the dimensionless parameters required to optimise the time for a MOF crystal to reach steady state. The model predicts that a large non-dimensional diffusion coefficient and an effective association with a small effective flux will reduce the time to steady-state. The effective dissociation is the most significant parameter to aid the estimation of the ferric ion concentration. This paper provides some theoretical insight for material scientists to optimise the design of a new ferric ion sensor.https://www.mdpi.com/2079-4991/12/5/887diffusionferric ion sensorMOFfinite differencecomposite materials |
| spellingShingle | Kirsten I. Louw Bronwyn H. Bradshaw-Hajek James M. Hill Ferric Ion Diffusion for MOF-Polymer Composite with Internal Boundary Sinks Nanomaterials diffusion ferric ion sensor MOF finite difference composite materials |
| title | Ferric Ion Diffusion for MOF-Polymer Composite with Internal Boundary Sinks |
| title_full | Ferric Ion Diffusion for MOF-Polymer Composite with Internal Boundary Sinks |
| title_fullStr | Ferric Ion Diffusion for MOF-Polymer Composite with Internal Boundary Sinks |
| title_full_unstemmed | Ferric Ion Diffusion for MOF-Polymer Composite with Internal Boundary Sinks |
| title_short | Ferric Ion Diffusion for MOF-Polymer Composite with Internal Boundary Sinks |
| title_sort | ferric ion diffusion for mof polymer composite with internal boundary sinks |
| topic | diffusion ferric ion sensor MOF finite difference composite materials |
| url | https://www.mdpi.com/2079-4991/12/5/887 |
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