Zain, N.N.M. and Raoov, M. and Abu Bakar, N.K. and Mohamad, S. (2016) Cyclodextrin modified ionic liquid material as a modifier for cloud point extraction of phenolic compounds using spectrophotometry. Journal of Inclusion Phenomena and Macrocyclic Chemistry, 84 (1-2). pp. 137-152. ISSN 1388-3127, DOI https://doi.org/10.1007/s10847-015-0591-y.
Full text not available from this repository.Abstract
A greener method based on cloud point extraction (CPE) in the presence of b-cyclodextrin (CPE-bCD) and β-cyclodextrin functionalized with ionic liquids (CPE- β CD-IL) systems were investigated and compared for the removal of 2,4,6-TCP and 4-NP in aqueous sample using UV-Vis spectrophotometric method. In the present study, β CD-IL modifier, was used in CPE- β CD-IL system as an enhancement in the removal of 2,4,6-TCP and 4-NP. The removal of 2,4,6-TCP and 4-NP were optimum at pH 7 with concentration of DC193C, 0.5 (v/v %), for this work. Apart from that, the removal process was found to be optimum at 10 mg L-1 of both modifies concentration. For the isotherm study, monolayer solubilization capacity is greater for 2,4,6-TCP than 4-NP. The performance of the β CD-IL modifier towards the hydrophilic 4-NP showed enhanced extraction efficiency in the present study as compared to the β -CD modifier. Finally, the interactions between the cavity of β CD-IL with 4-NP and DC193C were investigated and the results show that the inclusion of the complex formation, hydrogen bonding between DC193C and 4-NP, π- π interaction, electrostatic attraction between the imidazolium ring of the β CD-IL was the main interactions involved in the extraction process.
| Item Type: | Article |
|---|---|
| Funders: | Universiti Malaya (IPPP Grant: PV040/2012A), Universiti Sains Malaysia (Short Term Grant: 304/CIPPT/6313231) |
| Uncontrolled Keywords: | 2,4,6-Trichlorophenol; 4-Nitrophenol; Cloud point extraction; Non-ionic surfactant; β-Cyclodextrin-ionic liquid |
| Subjects: | Q Science > Q Science (General) Q Science > QD Chemistry |
| Divisions: | Faculty of Science > Department of Chemistry |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 19 Sep 2018 05:36 |
| Last Modified: | 19 Sep 2018 05:36 |
| URI: | http://eprints.um.edu.my/id/eprint/19299 |
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