Enhanced Water Purification Performance of Ionic Liquid Impregnated Metal–Organic Framework: Dye Removal by [BMIM][PF6]/MIL-53(Al) Composite
We incorporated a water-stable ionic liquid (IL), 1-butyl-3-methylimidazolium hexafluorophosphate, [BMIM][PF6], into a water-stable metal–organic framework (MOF), MIL-53(Al), to generate the [BMIM][PF6]/MIL-53(Al) composite. This composite was examined for water purification by studying its capacity...
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| Format: | Article |
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Frontiers Media S.A.
2021-01-01
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| Series: | Frontiers in Chemistry |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fchem.2020.622567/full |
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| author | Safiyye Kavak Safiyye Kavak Özce Durak Özce Durak Harun Kulak Harun Kulak H. Mert Polat H. Mert Polat Seda Keskin Seda Keskin Alper Uzun Alper Uzun Alper Uzun |
| author_facet | Safiyye Kavak Safiyye Kavak Özce Durak Özce Durak Harun Kulak Harun Kulak H. Mert Polat H. Mert Polat Seda Keskin Seda Keskin Alper Uzun Alper Uzun Alper Uzun |
| author_sort | Safiyye Kavak |
| collection | DOAJ |
| description | We incorporated a water-stable ionic liquid (IL), 1-butyl-3-methylimidazolium hexafluorophosphate, [BMIM][PF6], into a water-stable metal–organic framework (MOF), MIL-53(Al), to generate the [BMIM][PF6]/MIL-53(Al) composite. This composite was examined for water purification by studying its capacity for methylene blue (MB) and methyl orange (MO) removal from aqueous solutions having either single dye or a mixture of both. Data illustrated that the removal efficiency and the maximum adsorption capacity of MIL-53(Al) were increased several times upon [BMIM][PF6] incorporation. For instance, within 1 min, 10 mg of pristine MIL-53(Al) adsorbed 23.3% MB from 10 mg/L of MB solution, while [BMIM][PF6]/MIL-53(Al) composite was adsorbed 82.3% MB in an identical solution. In the case of MO, 10 mg of pristine MIL-53(Al) achieved 27.8 and 53.6% MO removal from 10 mg/L of MO solution, while [BMIM][PF6]/MIL-53(Al) composite removed 61.4 and 99.2% within 5 min and 3 h, respectively. Moreover, upon [BMIM][PF6] incorporation, the maximum MB and MO adsorption capacities of the pristine MOF were increased from 84.5 to 44 mg/g to 204.9 to 60 mg/g, respectively. The adsorption of dyes in pristine MIL-53(Al) and [BMIM][PF6]/MIL-53(Al) followed a pseudo-second-order kinetic model and a Langmuir isotherm model. In a mixture of both dyes, the IL/MOF composite showed a doubled MB selectivity after the IL incorporation. The composite was successfully regenerated at least two times after its use in water purification to remove MB, MO, and their mixtures. Infrared (IR) spectra indicated that the MB/MO adsorption occurs on [BMIM][PF6]/MIL-53(Al) by electrostatic interactions, hydrogen bonding, and π-π interactions. These results showed that [BMIM][PF6]/MIL-53(Al) composite is a highly promising material for efficient water purification. |
| first_indexed | 2024-12-16T23:00:39Z |
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| institution | Directory Open Access Journal |
| issn | 2296-2646 |
| language | English |
| last_indexed | 2024-12-16T23:00:39Z |
| publishDate | 2021-01-01 |
| publisher | Frontiers Media S.A. |
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| series | Frontiers in Chemistry |
| spelling | doaj.art-2ed0e40093ba444b86af0d5b42965dfa2022-12-21T22:12:45ZengFrontiers Media S.A.Frontiers in Chemistry2296-26462021-01-01810.3389/fchem.2020.622567622567Enhanced Water Purification Performance of Ionic Liquid Impregnated Metal–Organic Framework: Dye Removal by [BMIM][PF6]/MIL-53(Al) CompositeSafiyye Kavak0Safiyye Kavak1Özce Durak2Özce Durak3Harun Kulak4Harun Kulak5H. Mert Polat6H. Mert Polat7Seda Keskin8Seda Keskin9Alper Uzun10Alper Uzun11Alper Uzun12Koç University TÜPRAS Energy Center (KUTEM), Koç University, Istanbul, TurkeyDepartment of Materials Science and Engineering, Koç University, Istanbul, TurkeyKoç University TÜPRAS Energy Center (KUTEM), Koç University, Istanbul, TurkeyDepartment of Chemical and Biological Engineering, Koç University, Istanbul, TurkeyKoç University TÜPRAS Energy Center (KUTEM), Koç University, Istanbul, TurkeyDepartment of Chemical and Biological Engineering, Koç University, Istanbul, TurkeyKoç University TÜPRAS Energy Center (KUTEM), Koç University, Istanbul, TurkeyDepartment of Materials Science and Engineering, Koç University, Istanbul, TurkeyKoç University TÜPRAS Energy Center (KUTEM), Koç University, Istanbul, TurkeyDepartment of Chemical and Biological Engineering, Koç University, Istanbul, TurkeyKoç University TÜPRAS Energy Center (KUTEM), Koç University, Istanbul, TurkeyDepartment of Chemical and Biological Engineering, Koç University, Istanbul, TurkeyKoç University Surface Science and Technology Center (KUYTAM), Koç University, Istanbul, TurkeyWe incorporated a water-stable ionic liquid (IL), 1-butyl-3-methylimidazolium hexafluorophosphate, [BMIM][PF6], into a water-stable metal–organic framework (MOF), MIL-53(Al), to generate the [BMIM][PF6]/MIL-53(Al) composite. This composite was examined for water purification by studying its capacity for methylene blue (MB) and methyl orange (MO) removal from aqueous solutions having either single dye or a mixture of both. Data illustrated that the removal efficiency and the maximum adsorption capacity of MIL-53(Al) were increased several times upon [BMIM][PF6] incorporation. For instance, within 1 min, 10 mg of pristine MIL-53(Al) adsorbed 23.3% MB from 10 mg/L of MB solution, while [BMIM][PF6]/MIL-53(Al) composite was adsorbed 82.3% MB in an identical solution. In the case of MO, 10 mg of pristine MIL-53(Al) achieved 27.8 and 53.6% MO removal from 10 mg/L of MO solution, while [BMIM][PF6]/MIL-53(Al) composite removed 61.4 and 99.2% within 5 min and 3 h, respectively. Moreover, upon [BMIM][PF6] incorporation, the maximum MB and MO adsorption capacities of the pristine MOF were increased from 84.5 to 44 mg/g to 204.9 to 60 mg/g, respectively. The adsorption of dyes in pristine MIL-53(Al) and [BMIM][PF6]/MIL-53(Al) followed a pseudo-second-order kinetic model and a Langmuir isotherm model. In a mixture of both dyes, the IL/MOF composite showed a doubled MB selectivity after the IL incorporation. The composite was successfully regenerated at least two times after its use in water purification to remove MB, MO, and their mixtures. Infrared (IR) spectra indicated that the MB/MO adsorption occurs on [BMIM][PF6]/MIL-53(Al) by electrostatic interactions, hydrogen bonding, and π-π interactions. These results showed that [BMIM][PF6]/MIL-53(Al) composite is a highly promising material for efficient water purification.https://www.frontiersin.org/articles/10.3389/fchem.2020.622567/fullcompositewater purificationdye removalionic liquidMOF |
| spellingShingle | Safiyye Kavak Safiyye Kavak Özce Durak Özce Durak Harun Kulak Harun Kulak H. Mert Polat H. Mert Polat Seda Keskin Seda Keskin Alper Uzun Alper Uzun Alper Uzun Enhanced Water Purification Performance of Ionic Liquid Impregnated Metal–Organic Framework: Dye Removal by [BMIM][PF6]/MIL-53(Al) Composite Frontiers in Chemistry composite water purification dye removal ionic liquid MOF |
| title | Enhanced Water Purification Performance of Ionic Liquid Impregnated Metal–Organic Framework: Dye Removal by [BMIM][PF6]/MIL-53(Al) Composite |
| title_full | Enhanced Water Purification Performance of Ionic Liquid Impregnated Metal–Organic Framework: Dye Removal by [BMIM][PF6]/MIL-53(Al) Composite |
| title_fullStr | Enhanced Water Purification Performance of Ionic Liquid Impregnated Metal–Organic Framework: Dye Removal by [BMIM][PF6]/MIL-53(Al) Composite |
| title_full_unstemmed | Enhanced Water Purification Performance of Ionic Liquid Impregnated Metal–Organic Framework: Dye Removal by [BMIM][PF6]/MIL-53(Al) Composite |
| title_short | Enhanced Water Purification Performance of Ionic Liquid Impregnated Metal–Organic Framework: Dye Removal by [BMIM][PF6]/MIL-53(Al) Composite |
| title_sort | enhanced water purification performance of ionic liquid impregnated metal organic framework dye removal by bmim pf6 mil 53 al composite |
| topic | composite water purification dye removal ionic liquid MOF |
| url | https://www.frontiersin.org/articles/10.3389/fchem.2020.622567/full |
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