Bakhshaei, S. and Kamboh, M.A. and Mohamad, Sharifah and Zain, Sharifuddin Md and Ma'amor, Azman (2016) A novel cyano functionalized silica-titania oxide sol-gel based ionic liquid for the extraction of hazardous chlorophenols from aqueous environments. RSC Advances, 6 (55). pp. 49358-49369. ISSN 2046-2069, DOI https://doi.org/10.1039/c6ra08337d.
Full text not available from this repository.Abstract
In the present investigation a cyano functionalized silica-titania oxide sol-gel based ionic liquid (Si-Ti@CN/IL) has been successfully synthesised via sol-gel immobilization of cyanopropyltriethoxysilane and 1-benzyl-3-(trimethoxysilylpropyl)imidazolium chloride ionic liquid (BTMP-IM) on the silica-titania mixed oxide surface. The newly prepared Si-Ti@CN/IL was used as an adsorbent for the separation/preconcentration of chlorophenols from water samples prior to their HPLC-UV determination. Synthesis of Si-Ti@CN/IL was confirmed by Fourier transform infrared (FT-IR) spectroscopy, field emission scanning electron microscopy (FESEM), Brunauer-Emmett-Teller (BET), thermo gravimetric analysis (TGA), X-ray diffraction (XRD) and elemental (CHNS) analysis. During the extraction process, various kinds of interactions such as π-π interactions and hydrogen bonding between the anionic/cationic sites were monitored. The extraction of chlorophenols on Si-Ti@CN/IL is highly pH dependent and a significant percent extraction was achieved at pH = 2. The Si-Ti@CN/IL provided low limit of detection (LOD = 0.83-0.95 μg L-1) with a linearity range from 10-1000 μg L-1 (LOQ = 2.77-3.17 μg L-1). The field studies with high recovery (73.39-105.54%) as well as acceptable precision (%RSD 0.82-4.19) also supported the effectiveness of Si-Ti@CN/IL, which could be useful for the extraction of selected chlorophenols from tap water, lake water and leachate from landfill sites. The comparative data support Si-Ti@CN/IL as an effective extractant for selected chlorophenols.
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Uncontrolled Keywords: | Field emission microscopes; Fourier transform infrared spectroscopy; Gravimetric analysis; Hydrogen bonds |
| 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: | 05 Dec 2017 03:41 |
| Last Modified: | 25 Oct 2019 09:22 |
| URI: | http://eprints.um.edu.my/id/eprint/18447 |
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