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Open AccessArticle

Novel Magnetic Silica-Ionic Liquid Nanocomposites for Wastewater Treatment

1
Chemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
2
Egyptian Petroleum Research Institute, Nasr City 11727, Cairo, Egypt
3
Chemistry Department, College of Science, Ain Shams university, Abasia 11566, Cairo, Egypt
*
Author to whom correspondence should be addressed.
Nanomaterials 2020, 10(1), 71; https://doi.org/10.3390/nano10010071
Received: 5 December 2019 / Revised: 23 December 2019 / Accepted: 23 December 2019 / Published: 28 December 2019
In this work, new imidazolium silica-ionic liquids doped with magnetite nanocomposites are prepared for use in the field of water purification owing to their unique properties, which can be manipulated by an external magnetic field. A silane precursor based on aminopropyltriethoxysilane (APTS) condensed with p-hydroxybenzaldehyde and glyoxal in an acetic acid solution is used to prepare disiloxyimidazolium ionic liquid (SIMIL). The silica composite (Si-IL) and silica-coated magnetite (Fe3O4-Si-IL) composites are prepared using the sol-gel technique. The chemical structures, morphologies, crystalline lattice structures, thermal stabilities, surface charges, surface areas, particle sizes, and magnetic characteristics of Fe3O4-Si-IL and Si-IL are investigated. The Fe3O4-Si-IL and Si-IL nanocomposites show excellent chemical adsorption capacities as 653 and 472 mg g−1, respectively, during times ranging 90 to 110 min when they are used as adsorbents to remove Congo red (CR) dye as a water pollutant. View Full-Text
Keywords: adsorbents; imidazolium cations; ionic liquid; nanocomposite; magnetite; silica nanoparticles adsorbents; imidazolium cations; ionic liquid; nanocomposite; magnetite; silica nanoparticles
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Atta, A.M.; Moustafa, Y.M.; Ezzat, A.O.; Hashem, A.I. Novel Magnetic Silica-Ionic Liquid Nanocomposites for Wastewater Treatment. Nanomaterials 2020, 10, 71.

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