2017
DOI: 10.1016/j.clay.2016.12.005
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Evaluation of some intercalation methods of dimethylsulphoxide onto HCl-treated and untreated Egyptian kaolinite

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Cited by 28 publications
(10 citation statements)
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“…After DMSO intercalation, the band at 938 cm –1 assigned to Al–OH bending is blue-shifted to 958 cm –1 . Meanwhile, the signal at 792 cm –1 attributed to out of phase stretching of Al–OH tends to be weaken, and the peak at 687 cm –1 due to Al–OH symmetric vibration is red-shifted to 695 cm –1 . These IR peaks detail the bonding evolutions of hydroxyl groups at the inner surface of kaolinite upon DMSO intercalation, which leads to strong hydrogen bonds formation between the guest, DMSO molecules, and Al–OH of kaolinite host with and without hydration.…”
mentioning
confidence: 98%
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“…After DMSO intercalation, the band at 938 cm –1 assigned to Al–OH bending is blue-shifted to 958 cm –1 . Meanwhile, the signal at 792 cm –1 attributed to out of phase stretching of Al–OH tends to be weaken, and the peak at 687 cm –1 due to Al–OH symmetric vibration is red-shifted to 695 cm –1 . These IR peaks detail the bonding evolutions of hydroxyl groups at the inner surface of kaolinite upon DMSO intercalation, which leads to strong hydrogen bonds formation between the guest, DMSO molecules, and Al–OH of kaolinite host with and without hydration.…”
mentioning
confidence: 98%
“…The DMSO–kaolinite interactions have been mostly studied using spectroscopic and structural methods. Specifically, Frost et al identified symmetric and antisymmetric modes of intercalated DMSO in kaolinite using FTIR and Raman spectra, including monomeric, polymeric, and nonbonded DMSO under interlayer confinement . Abou-El-Sherbini et al proposed two mechanisms of DMSO intercalation in kaolinite, including (i) indirect hydrogen bonding of DMSO to exfoliated kaolinite silica layers via an intermediate water layer and (ii) direct hydrogen bonding, in which DMSO binds to kaolinite inner–surface aluminol groups. Yariv et al studied DMSO–kaolinite complexes by thermo–IR–spectroscopy, and two types of complexes were identified.…”
mentioning
confidence: 99%
“…The internal surface OH groups are located virtually perpendicular to the tetrahedral sheet of the next layer preceding to creation of intensive hydrogen bonds. Hence, kaolinite has been categorised as a non-expandable mineral [6].…”
Section: Introductionmentioning
confidence: 99%
“…5 and Table S2), an absorbance at 3700-3100 cm −1 , with a peak centered at 3620 and 3440 cm −1 , could be attributed to the overlapping of O-H stretching (Mukhopadhyay et al, 2015;Wei et al, 2018). A strong broadband observed at 3023 and 2899 cm −1 in the mine soil is assigned to stretch (-CH) of -CH 2 and-CH 3 groups of aliphatic chains (Abou-El-Sherbini et al, 2017;Parolo et al, 2017). The absorption peaks at 2524, 1438, Wen et al, 2018).…”
Section: Ftirmentioning
confidence: 89%