Microgravimetric Modeling—A New Method for Extracting Adsorption Parameters of Functionalized MIL-101(Cr)
As a volatile air pollutant, formaldehyde can enter people’s living environment through interior decoration, furniture and paint, causing serious harm to human health. Therefore, it is necessary to develop a sensor for the real-time detection of formaldehyde in low concentrations. According to the c...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-07-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/13/14/2072 |
| _version_ | 1827732171158192128 |
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| author | Xu Zhang Bo Tian Zhiheng Ma He Wang Zhixuan Cheng Jiaqiang Xu |
| author_facet | Xu Zhang Bo Tian Zhiheng Ma He Wang Zhixuan Cheng Jiaqiang Xu |
| author_sort | Xu Zhang |
| collection | DOAJ |
| description | As a volatile air pollutant, formaldehyde can enter people’s living environment through interior decoration, furniture and paint, causing serious harm to human health. Therefore, it is necessary to develop a sensor for the real-time detection of formaldehyde in low concentrations. According to the chemical interaction between amino groups and formaldehyde, a MIL-101(Cr) aminated-material-based formaldehyde cantilever sensor was prepared, of which ethylenediamine- functionalized MIL-101(Cr) named ED-MIL-101(Cr)) showed the best gas sensing performance. Using quasi-in situ infrared spectroscopy, ED-MIL-101(Cr) was found bound to formaldehyde through a Schiff base. The adsorption enthalpy of formaldehyde-bound ED-MIL-101(Cr) was −52.6 kJ/mol, which corresponds to weak chemical adsorption, so the material showed good selectivity. In addition, ED-MIL-101(Cr) has the most active sites, so its response value to formaldehyde is larger and it takes longer to reach saturation adsorption than bare MIL-101(Cr). Through the research on the gas sensing performance of functionalized MIL-101(Cr) material, we found that it has a strong application potential in the field of formaldehyde monitoring, and the material performance can be quantitatively and accurately evaluated through combining calculation and experimentation for understanding the gas sensing mechanism. |
| first_indexed | 2024-03-11T00:45:56Z |
| format | Article |
| id | doaj.art-62de0997cf8d442aa4a0299d1e802db2 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-11T00:45:56Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-62de0997cf8d442aa4a0299d1e802db22023-11-18T20:45:35ZengMDPI AGNanomaterials2079-49912023-07-011314207210.3390/nano13142072Microgravimetric Modeling—A New Method for Extracting Adsorption Parameters of Functionalized MIL-101(Cr)Xu Zhang0Bo Tian1Zhiheng Ma2He Wang3Zhixuan Cheng4Jiaqiang Xu5NEST Laboratory, Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, ChinaNEST Laboratory, Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, ChinaNEST Laboratory, Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, ChinaNEST Laboratory, Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, ChinaNEST Laboratory, Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, ChinaNEST Laboratory, Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, ChinaAs a volatile air pollutant, formaldehyde can enter people’s living environment through interior decoration, furniture and paint, causing serious harm to human health. Therefore, it is necessary to develop a sensor for the real-time detection of formaldehyde in low concentrations. According to the chemical interaction between amino groups and formaldehyde, a MIL-101(Cr) aminated-material-based formaldehyde cantilever sensor was prepared, of which ethylenediamine- functionalized MIL-101(Cr) named ED-MIL-101(Cr)) showed the best gas sensing performance. Using quasi-in situ infrared spectroscopy, ED-MIL-101(Cr) was found bound to formaldehyde through a Schiff base. The adsorption enthalpy of formaldehyde-bound ED-MIL-101(Cr) was −52.6 kJ/mol, which corresponds to weak chemical adsorption, so the material showed good selectivity. In addition, ED-MIL-101(Cr) has the most active sites, so its response value to formaldehyde is larger and it takes longer to reach saturation adsorption than bare MIL-101(Cr). Through the research on the gas sensing performance of functionalized MIL-101(Cr) material, we found that it has a strong application potential in the field of formaldehyde monitoring, and the material performance can be quantitatively and accurately evaluated through combining calculation and experimentation for understanding the gas sensing mechanism.https://www.mdpi.com/2079-4991/13/14/2072microgravimetric analysis methodmetal−organic frameworks (MOFs)formaldehyde sensorthermodynamic parameterskinetic parameters |
| spellingShingle | Xu Zhang Bo Tian Zhiheng Ma He Wang Zhixuan Cheng Jiaqiang Xu Microgravimetric Modeling—A New Method for Extracting Adsorption Parameters of Functionalized MIL-101(Cr) Nanomaterials microgravimetric analysis method metal−organic frameworks (MOFs) formaldehyde sensor thermodynamic parameters kinetic parameters |
| title | Microgravimetric Modeling—A New Method for Extracting Adsorption Parameters of Functionalized MIL-101(Cr) |
| title_full | Microgravimetric Modeling—A New Method for Extracting Adsorption Parameters of Functionalized MIL-101(Cr) |
| title_fullStr | Microgravimetric Modeling—A New Method for Extracting Adsorption Parameters of Functionalized MIL-101(Cr) |
| title_full_unstemmed | Microgravimetric Modeling—A New Method for Extracting Adsorption Parameters of Functionalized MIL-101(Cr) |
| title_short | Microgravimetric Modeling—A New Method for Extracting Adsorption Parameters of Functionalized MIL-101(Cr) |
| title_sort | microgravimetric modeling a new method for extracting adsorption parameters of functionalized mil 101 cr |
| topic | microgravimetric analysis method metal−organic frameworks (MOFs) formaldehyde sensor thermodynamic parameters kinetic parameters |
| url | https://www.mdpi.com/2079-4991/13/14/2072 |
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