Preparation and Characterization of the Sol-Gel Silica Containing Ionic Liquids as a Potential Adsorbent for the Removal of Cr(VI) Ions from Aqueous Solutions

Merve Arabacı; Nilay Gizli

doi:10.17776/csj.359471

EN

Preparation and Characterization of the Sol-Gel Silica Containing Ionic Liquids as a Potential Adsorbent for the Removal of Cr(VI) Ions from Aqueous Solutions

Abstract

In this study ionic liquid mediated sol-gel silica adsorbents were prepared and characterized to investigate the sorption of Cr (VI) ions from aqueous solutions. For this purpose silica based adsorbents containing ionic liquids (ILs) were synthesized by following the sol-gel method in ionic liquid media. Thus the high extracting ability of ILs were combined with the surface properties of silica substances. Commercial (Aliquat 336^® and EMIMTf₂N) and synthesized ([A336][NO₃]) ionic liquids were incorporated directly by sol-gel process. Silica based adsorbents were being initiated with silica precursor (TEOS), water, alcohol and ionic liquid hydrolysis in the presence of an acid catalyst then completed with a condensation reaction. Chemical and morphological characterization of prepared adsorbents have been investigated by FTIR, SEM and BET analysis. The materials exhibited average pore diameter of 2 nm, pore volume of 0.3 cm³/g and BET surface area of 300–600 m²/g. The sorption behaviors of adsorbents have been investigated by using a series of batch sorption studies. Cr(VI) sorption percentages of the adsorbents were enhanced by containing ILs up to 99% with the adsorption capacity of 31.74 mg/g. It can be concluded that sorption of Cr(VI) ions from aqueous solution by sol-gel silica based adsorbents containing Aliquat 336 takes place favorably and these type of adsorbents are promising agents in the adsorption processes.

Keywords

sol-gel,silica adsorbents,ionic liquid

References

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Details

Primary Language

English

Subjects

-

Journal Section

Research Article

Authors

Merve Arabacı
Türkiye

Nilay Gizli ^*
Ege University
Türkiye

Publication Date

March 22, 2020

Submission Date

November 29, 2017

Acceptance Date

September 4, 2019

Published in Issue

Year 2020 Volume: 41 Number: 1

DOI

https://doi.org/10.17776/csj.359471

IZ

https://izlik.org/JA54KE82BY

Cite

RIS / Bibtex

APA

Arabacı, M., & Gizli, N. (2020). Preparation and Characterization of the Sol-Gel Silica Containing Ionic Liquids as a Potential Adsorbent for the Removal of Cr(VI) Ions from Aqueous Solutions. Cumhuriyet Science Journal, 41(1), 281-289. https://doi.org/10.17776/csj.359471

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Preparation and Characterization of the Sol-Gel Silica Containing Ionic Liquids as a Potential Adsorbent for the Removal of Cr(VI) Ions from Aqueous Solutions

Abstract

Keywords

Öz

References

Details

Primary Language

Subjects

Journal Section

Authors

Publication Date

Submission Date

Acceptance Date

Published in Issue

DOI

IZ

Cite

Cited By

Ionogels for flexible conductive substrates and their application in biosensing

Recent advances in heavy metals uptake by tailored silica-based adsorbents