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Sporopollenin supported ionic liquids biosorbent for enhanced selective adsorption of 2,4-dinitrophenol from aqueous environment

This study attempts to bring about a facile approach to selectively adsorb 2,4-dinitrophenol (2,4-DNP) from an aqueous system using sporopollenin supported ionic liquid (SpIL) biosorbent, namely sporopollenin supported methylimidazolium (Sp-MIM). Spompollenin acts as the host with the accessible cha...

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Main Authors: Chandrasekaram, Kumuthini, Alias, Yatimah, Fathullah, Syed Fariq, Lee, Vannajan Sanghiran, Haron, Naimah, Raoov, Muggundha, Zakaria, Norzalida, Mohamad, Sharifah
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Published: Elsevier 2021
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QD Chemistry
Online Access:http://eprints.um.edu.my/34082/
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spelling my.um.eprints.340822022-07-19T04:21:06Z http://eprints.um.edu.my/34082/ Sporopollenin supported ionic liquids biosorbent for enhanced selective adsorption of 2,4-dinitrophenol from aqueous environment Chandrasekaram, Kumuthini Alias, Yatimah Fathullah, Syed Fariq Lee, Vannajan Sanghiran Haron, Naimah Raoov, Muggundha Zakaria, Norzalida Mohamad, Sharifah QD Chemistry This study attempts to bring about a facile approach to selectively adsorb 2,4-dinitrophenol (2,4-DNP) from an aqueous system using sporopollenin supported ionic liquid (SpIL) biosorbent, namely sporopollenin supported methylimidazolium (Sp-MIM). Spompollenin acts as the host with the accessible chamber, while methyl-imidazolium acts as the active site that binds 2,4-DNP from the aqueous system. Methylimidazolium, being chemically immobilized onto sporopollenin, simultaneously ensures that the ionic liquid does not leach into the aqueous environment while providing increased affinity and selectivity towards 2,4-DNP. The solid samples were characterized using conventional solid-state testing techniques such as FTIR, C-13 CP/MAS solid-state NMR, FESEM-EDX spectroscopy, TGA, and BET/BJH analysis. While UV-Visible spectroscopy was used to study the adsorption parameters. Based on the study, methylimidazolium's immobilization onto sporopollenin increased pore size distinctly from 5.06 nm to 44.94 nm, thereby reporting definitive mesoporous structure with a pronounced affinity towards 2,4-DNP, determined via a series of analyte screening. Adsorption parameter exploration revealed 15 mg of Sp-MIM was able to adsorb 84% of 2,4-DNP from 20 ppm concentrated aqueous solution within 15 min of contact under acidic condition (pH 4) and could be reused up to 5 cycles without any loss to adsorption percentage. The affinity of Sp-MIM towards 2,4-DNP was further explored employing computational calculations using molecular docking and quantum mechanics, both of which support the presence of pi-pi interaction and hydrogen bonding between Sp-MIM and 2,4-DNP. Elsevier 2021-09 Article PeerReviewed Chandrasekaram, Kumuthini and Alias, Yatimah and Fathullah, Syed Fariq and Lee, Vannajan Sanghiran and Haron, Naimah and Raoov, Muggundha and Zakaria, Norzalida and Mohamad, Sharifah (2021) Sporopollenin supported ionic liquids biosorbent for enhanced selective adsorption of 2,4-dinitrophenol from aqueous environment. Materials Today Communications, 28. ISSN 2352-4928, DOI https://doi.org/10.1016/j.mtcomm.2021.102587 <https://doi.org/10.1016/j.mtcomm.2021.102587>. 10.1016/j.mtcomm.2021.102587
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic QD Chemistry
spellingShingle QD Chemistry
Chandrasekaram, Kumuthini
Alias, Yatimah
Fathullah, Syed Fariq
Lee, Vannajan Sanghiran
Haron, Naimah
Raoov, Muggundha
Zakaria, Norzalida
Mohamad, Sharifah
Sporopollenin supported ionic liquids biosorbent for enhanced selective adsorption of 2,4-dinitrophenol from aqueous environment
description This study attempts to bring about a facile approach to selectively adsorb 2,4-dinitrophenol (2,4-DNP) from an aqueous system using sporopollenin supported ionic liquid (SpIL) biosorbent, namely sporopollenin supported methylimidazolium (Sp-MIM). Spompollenin acts as the host with the accessible chamber, while methyl-imidazolium acts as the active site that binds 2,4-DNP from the aqueous system. Methylimidazolium, being chemically immobilized onto sporopollenin, simultaneously ensures that the ionic liquid does not leach into the aqueous environment while providing increased affinity and selectivity towards 2,4-DNP. The solid samples were characterized using conventional solid-state testing techniques such as FTIR, C-13 CP/MAS solid-state NMR, FESEM-EDX spectroscopy, TGA, and BET/BJH analysis. While UV-Visible spectroscopy was used to study the adsorption parameters. Based on the study, methylimidazolium's immobilization onto sporopollenin increased pore size distinctly from 5.06 nm to 44.94 nm, thereby reporting definitive mesoporous structure with a pronounced affinity towards 2,4-DNP, determined via a series of analyte screening. Adsorption parameter exploration revealed 15 mg of Sp-MIM was able to adsorb 84% of 2,4-DNP from 20 ppm concentrated aqueous solution within 15 min of contact under acidic condition (pH 4) and could be reused up to 5 cycles without any loss to adsorption percentage. The affinity of Sp-MIM towards 2,4-DNP was further explored employing computational calculations using molecular docking and quantum mechanics, both of which support the presence of pi-pi interaction and hydrogen bonding between Sp-MIM and 2,4-DNP.
format Article
author Chandrasekaram, Kumuthini
Alias, Yatimah
Fathullah, Syed Fariq
Lee, Vannajan Sanghiran
Haron, Naimah
Raoov, Muggundha
Zakaria, Norzalida
Mohamad, Sharifah
author_facet Chandrasekaram, Kumuthini
Alias, Yatimah
Fathullah, Syed Fariq
Lee, Vannajan Sanghiran
Haron, Naimah
Raoov, Muggundha
Zakaria, Norzalida
Mohamad, Sharifah
author_sort Chandrasekaram, Kumuthini
title Sporopollenin supported ionic liquids biosorbent for enhanced selective adsorption of 2,4-dinitrophenol from aqueous environment
title_short Sporopollenin supported ionic liquids biosorbent for enhanced selective adsorption of 2,4-dinitrophenol from aqueous environment
title_full Sporopollenin supported ionic liquids biosorbent for enhanced selective adsorption of 2,4-dinitrophenol from aqueous environment
title_fullStr Sporopollenin supported ionic liquids biosorbent for enhanced selective adsorption of 2,4-dinitrophenol from aqueous environment
title_full_unstemmed Sporopollenin supported ionic liquids biosorbent for enhanced selective adsorption of 2,4-dinitrophenol from aqueous environment
title_sort sporopollenin supported ionic liquids biosorbent for enhanced selective adsorption of 2,4-dinitrophenol from aqueous environment
publisher Elsevier
publishDate 2021
url http://eprints.um.edu.my/34082/
_version_ 1739828486814564352
score 13.244414

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