Evaluation of defect induced surface heterogeneity in Metal-Organic Framework materials with alkali dopants employing adsorption isotherm modelling
In this article, an assessment of surface structural heterogeneity in porous metal organic framework (MOF) structure has been demonstrated by employing the methane and carbon-dioxide adsorption isotherms data. The virgin MIL-101-(Cr) MOF was synthesized by the hydrothermal method and defects were in...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2022
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| Online Access: | https://hdl.handle.net/10356/163842 |
| _version_ | 1826116044052234240 |
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| author | Kayal, Sibnath Chakraborty, Anutosh |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Kayal, Sibnath Chakraborty, Anutosh |
| author_sort | Kayal, Sibnath |
| collection | NTU |
| description | In this article, an assessment of surface structural heterogeneity in porous metal organic framework (MOF) structure has been demonstrated by employing the methane and carbon-dioxide adsorption isotherms data. The virgin MIL-101-(Cr) MOF was synthesized by the hydrothermal method and defects were induced in the MOF structure by doping with various alkali (K, Na, Li) cations. The synthesized MOFs were characterized by XRD, SEM, EDX and BET measurement techniques. In order to understand the defect induced surface heterogeneity by alkali cation dopants, the surface energy distributions for CH4 and CO2 adsorptions on MOFs were measured by Dubinin – Astakhov model equation. The surface heterogeneity is mainly controlled by the limiting uptakes of adsorbates, the polarizability of adsorbates and the adsorbate-adsorbent interaction energy. |
| first_indexed | 2024-10-01T04:04:59Z |
| format | Journal Article |
| id | ntu-10356/163842 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:04:59Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1638422022-12-19T08:41:40Z Evaluation of defect induced surface heterogeneity in Metal-Organic Framework materials with alkali dopants employing adsorption isotherm modelling Kayal, Sibnath Chakraborty, Anutosh School of Mechanical and Aerospace Engineering Engineering::Mechanical engineering Alkali Dopants Adsorption Isotherms In this article, an assessment of surface structural heterogeneity in porous metal organic framework (MOF) structure has been demonstrated by employing the methane and carbon-dioxide adsorption isotherms data. The virgin MIL-101-(Cr) MOF was synthesized by the hydrothermal method and defects were induced in the MOF structure by doping with various alkali (K, Na, Li) cations. The synthesized MOFs were characterized by XRD, SEM, EDX and BET measurement techniques. In order to understand the defect induced surface heterogeneity by alkali cation dopants, the surface energy distributions for CH4 and CO2 adsorptions on MOFs were measured by Dubinin – Astakhov model equation. The surface heterogeneity is mainly controlled by the limiting uptakes of adsorbates, the polarizability of adsorbates and the adsorbate-adsorbent interaction energy. 2022-12-19T08:41:40Z 2022-12-19T08:41:40Z 2022 Journal Article Kayal, S. & Chakraborty, A. (2022). Evaluation of defect induced surface heterogeneity in Metal-Organic Framework materials with alkali dopants employing adsorption isotherm modelling. Journal of the Indian Chemical Society, 99(6), 100493-. https://dx.doi.org/10.1016/j.jics.2022.100493 0019-4522 https://hdl.handle.net/10356/163842 10.1016/j.jics.2022.100493 2-s2.0-85129296664 6 99 100493 en Journal of the Indian Chemical Society © 2022 Indian Chemical Society. Published by Elsevier B.V. All rights reserved. |
| spellingShingle | Engineering::Mechanical engineering Alkali Dopants Adsorption Isotherms Kayal, Sibnath Chakraborty, Anutosh Evaluation of defect induced surface heterogeneity in Metal-Organic Framework materials with alkali dopants employing adsorption isotherm modelling |
| title | Evaluation of defect induced surface heterogeneity in Metal-Organic Framework materials with alkali dopants employing adsorption isotherm modelling |
| title_full | Evaluation of defect induced surface heterogeneity in Metal-Organic Framework materials with alkali dopants employing adsorption isotherm modelling |
| title_fullStr | Evaluation of defect induced surface heterogeneity in Metal-Organic Framework materials with alkali dopants employing adsorption isotherm modelling |
| title_full_unstemmed | Evaluation of defect induced surface heterogeneity in Metal-Organic Framework materials with alkali dopants employing adsorption isotherm modelling |
| title_short | Evaluation of defect induced surface heterogeneity in Metal-Organic Framework materials with alkali dopants employing adsorption isotherm modelling |
| title_sort | evaluation of defect induced surface heterogeneity in metal organic framework materials with alkali dopants employing adsorption isotherm modelling |
| topic | Engineering::Mechanical engineering Alkali Dopants Adsorption Isotherms |
| url | https://hdl.handle.net/10356/163842 |
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