Application of two-dimensional leaf-shaped zeolitic imidazolate framework (2D ZIF-L) as arsenite adsorbent: Kinetic, isotherm and mechanism
Two-dimensional leaf-shaped zeolitic imidazolate framework (ZIF-L) was synthesized in aqueous solution by using zinc salt and 2-methylimidazole (2-MeIM) at room temperature. The synthesized ZIF-L shows unique two-dimensional (2-D) leaf-like crystal morphology using field emission scanning electron m...
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my.utp.eprints.212892019-02-26T03:18:08Z Application of two-dimensional leaf-shaped zeolitic imidazolate framework (2D ZIF-L) as arsenite adsorbent: Kinetic, isotherm and mechanism Nasir, A.M. Md Nordin, N.A.H. Goh, P.S. Ismail, A.F. Two-dimensional leaf-shaped zeolitic imidazolate framework (ZIF-L) was synthesized in aqueous solution by using zinc salt and 2-methylimidazole (2-MeIM) at room temperature. The synthesized ZIF-L shows unique two-dimensional (2-D) leaf-like crystal morphology using field emission scanning electron microscope. The crystalline structure and total surface area of ZIF-L was indicated by X-ray diffraction, thermogravimetric analysis and Brunauer�Emmett�Teller analysis. The experimental data of adsorption of arsenite by ZIF-L were well fitted by two-site- pseudo-second-order kinetic model. The adsorption isotherms were well described by Freundlich isotherm model. The synthesized ZIF-L possess maximum uptake of arsenite was 43.74 mg/g at pH 10.0 at the room temperature (25.0 ± 1 °C) which is relatively higher than other class of metal-organic framework. Zeta potential, fourier transform infrared, and scanning electronic microscope combined with X-ray energy dispersive spectrometer concluded that adsorption mechanism of arsenite on ZIF-L was occurred based on electrostatic interaction between arsenite ions and surface charge of ZIF-L, also substitution of hydroxyl group by arsenite to form inner-sphere complex. Since the development of ZIF-L through aqueous media was rapid, simple and eliminated the heating process, ZIF-L can be regarded as a promising adsorbent and low-cost adsorbent for the removal of arsenite. © 2017 Elsevier B.V. Elsevier B.V. 2018 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85037544448&doi=10.1016%2fj.molliq.2017.12.005&partnerID=40&md5=9fa1319e76eb774ab87802f9328fe8bb Nasir, A.M. and Md Nordin, N.A.H. and Goh, P.S. and Ismail, A.F. (2018) Application of two-dimensional leaf-shaped zeolitic imidazolate framework (2D ZIF-L) as arsenite adsorbent: Kinetic, isotherm and mechanism. Journal of Molecular Liquids, 250 . pp. 269-277. http://eprints.utp.edu.my/21289/ |
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Two-dimensional leaf-shaped zeolitic imidazolate framework (ZIF-L) was synthesized in aqueous solution by using zinc salt and 2-methylimidazole (2-MeIM) at room temperature. The synthesized ZIF-L shows unique two-dimensional (2-D) leaf-like crystal morphology using field emission scanning electron microscope. The crystalline structure and total surface area of ZIF-L was indicated by X-ray diffraction, thermogravimetric analysis and Brunauer�Emmett�Teller analysis. The experimental data of adsorption of arsenite by ZIF-L were well fitted by two-site- pseudo-second-order kinetic model. The adsorption isotherms were well described by Freundlich isotherm model. The synthesized ZIF-L possess maximum uptake of arsenite was 43.74 mg/g at pH 10.0 at the room temperature (25.0 ± 1 °C) which is relatively higher than other class of metal-organic framework. Zeta potential, fourier transform infrared, and scanning electronic microscope combined with X-ray energy dispersive spectrometer concluded that adsorption mechanism of arsenite on ZIF-L was occurred based on electrostatic interaction between arsenite ions and surface charge of ZIF-L, also substitution of hydroxyl group by arsenite to form inner-sphere complex. Since the development of ZIF-L through aqueous media was rapid, simple and eliminated the heating process, ZIF-L can be regarded as a promising adsorbent and low-cost adsorbent for the removal of arsenite. © 2017 Elsevier B.V. |
| format |
Article |
| author |
Nasir, A.M. Md Nordin, N.A.H. Goh, P.S. Ismail, A.F. |
| spellingShingle |
Nasir, A.M. Md Nordin, N.A.H. Goh, P.S. Ismail, A.F. Application of two-dimensional leaf-shaped zeolitic imidazolate framework (2D ZIF-L) as arsenite adsorbent: Kinetic, isotherm and mechanism |
| author_facet |
Nasir, A.M. Md Nordin, N.A.H. Goh, P.S. Ismail, A.F. |
| author_sort |
Nasir, A.M. |
| title |
Application of two-dimensional leaf-shaped zeolitic imidazolate framework (2D ZIF-L) as arsenite adsorbent: Kinetic, isotherm and mechanism |
| title_short |
Application of two-dimensional leaf-shaped zeolitic imidazolate framework (2D ZIF-L) as arsenite adsorbent: Kinetic, isotherm and mechanism |
| title_full |
Application of two-dimensional leaf-shaped zeolitic imidazolate framework (2D ZIF-L) as arsenite adsorbent: Kinetic, isotherm and mechanism |
| title_fullStr |
Application of two-dimensional leaf-shaped zeolitic imidazolate framework (2D ZIF-L) as arsenite adsorbent: Kinetic, isotherm and mechanism |
| title_full_unstemmed |
Application of two-dimensional leaf-shaped zeolitic imidazolate framework (2D ZIF-L) as arsenite adsorbent: Kinetic, isotherm and mechanism |
| title_sort |
application of two-dimensional leaf-shaped zeolitic imidazolate framework (2d zif-l) as arsenite adsorbent: kinetic, isotherm and mechanism |
| publisher |
Elsevier B.V. |
| publishDate |
2018 |
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https://www.scopus.com/inward/record.uri?eid=2-s2.0-85037544448&doi=10.1016%2fj.molliq.2017.12.005&partnerID=40&md5=9fa1319e76eb774ab87802f9328fe8bb http://eprints.utp.edu.my/21289/ |
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