“Sweet” ionic liquid gels: materials for sweetening of fuels

Billeci, Floriana; D’Anna, Francesca; Gunaratne, H. Q. Nimal; Plechkova, Natalia V.; Seddon, Kenneth R.

doi:10.1039/c8gc01615a

Cited by 49 publications

(49 citation statements)

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“…In addition to the absence of volatility and flammability of the IL, ionogels can be more conductive and thermally stable. [26][27][28] Similarly, the structural versatility of ionogels allows their application in various fields, including biomedicine, [29] as anti-oxidants, [30] in environmental remediation [31][32][33] and in catalysis. [34] Herein we propose the use of easily synthesisable organic salts as gelators.…”

Section: Introductionmentioning

confidence: 99%

Carbohydrate-supramolecular gels: Adsorbents for chromium(VI) removal from wastewater

Rizzo

Andrews

Steed

et al. 2019

Journal of Colloid and Interface Science

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Francesca (2019) 'Carbohydrate-supramolecular gels : adsorbents for chromium(VI) removal from wastewater.', Journal of colloid and interface science., 548 . pp. 184-196. Additional information: Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. AbstractHypothesis. To overcome the contamination of water by heavy metals the adsorption of the pollutant on gel phases is an attractive solution since gels are inexpensive, potentially highly efficient and form a distinct phase while allowing diffusion of the contaminated water throughout the material. This work tests the chromium(VI) adsorbent capacity of new supramolecular gels for Chromium(VI) removal from wastewater.Experiments. First hydrophobic imidazolium salts of carbohydrate anions were synthesised as new gelators. Subsequently, they were dissolved in a solvent by heating and, after cooling overnight, to give the formation of supramolecular gels. The properties of the resulting gels, such as thermal stability, mechanical strength, morphology, rheology, and kinetics of gel formation, were studied as a function of gelator structure, gelation solvent and pollutant removal efficiency.Findings. Carbohydrate-derived gels showed the best removal capacity, i.e. 97% in 24 h.Interestingly, in one case, the reduction of chromium(VI) to chromium(III) also occurred after the adsorption process, and this phenomenon has been analysed using 1 H NMR spectroscopy, IR spectroscopy, and SEM. The most efficient gel can reach an adsorption capacity of 598 mg/g in contrast to a value of 153 mg/g for the most effectively best hydrogels reported to date. The new gel can be also recycled up to 4 times. These findings suggest that these new, supramolecular hydrogels have potential applications in environmental remediation.

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Section: Introductionmentioning

confidence: 99%

Carbohydrate-supramolecular gels: Adsorbents for chromium(VI) removal from wastewater

Rizzo

Andrews

Steed

et al. 2019

Journal of Colloid and Interface Science

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“…The design requirements of the target material, [Cox-ILy] included (i) use of a substituted tetraalkylammonium cation with multiple coordination sites for Co 2+ , (ii) low viscosity of the resultant system and (iii) incorporation of a sustainable sugar-based cationic ligand system. 15 These were met by using a binary ionic liquid system with two types of alkyl ammonium cations, and either bistriflamide or bromide counterions, into which the magnetic ion, Co 2+ , was introduced as its bistriflamide salt.…”

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confidence: 99%

A magnetic self-contained thermochromic system with convenient temperature range

et al. 2019

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“…Increasing the diversity of ionic liquid structures resulted in the adoption of new rules for labelling them, with reference to the special (dedicated) functional group that characterizes them, to the original features of a given salt-or regarding their use, e.g., as sweet [45], energetic [46], chiral [47], fluorescent [48], polymeric [49], magnetic [50] and many others. On the other hand, the possible methods of the structural combination of ionic liquids focusing on expanding their structure with The most common cationic parts include imidazolium (im, e.g., C 1 C 2 im, emim, EMIM: 1-ethyl-3-methylimidazolium), ammonium (N x x x x , e.g., N 1 8 8 8 : methyl(trioctyl)ammonium), pyridinium (py, e.g., C 6 py: 1-hexylpyridinium), phosphonium (P x x x , e.g., P 4 4 4 12 : tributyl(dodecyl)phosphonium), sulfonium (S x x x ), pyrrolidinium (pyrr), piperidinium (pip), morpholinium (morph), etc.…”

Section: Classification and Application Of Ilsmentioning

confidence: 99%

Chiral Ionic Liquids: Structural Diversity, Properties and Applications in Selected Separation Techniques

Flieger

Feder‐Kubis

Tatarczak-Michalewska

2020

IJMS

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Ionic liquids (ILs) are chemical compounds composed of ions with melting points below 100 °C exhibiting a design feature. ILs are commonly used as the so-called green solvents, reagents or highly efficient catalysts in varied chemical processes. The huge application potential of ionic liquids (IL) justifies the growing interest in these compounds. In the last decade, increasing attention has been devoted to the development of new methods in the synthesis of stable chiral ionic liquids (CILs) and their application in various separation techniques. The beginnings of the successful use of CILs to separate enantiomers date back to the 1990 s. Most chiral ILs are based on chiral cations or chiral anions. There is also a limited number of CILs possessing both a chiral cation and a chiral anion. Due to the high molecular diversity of both ions, of which at least one has a chiral center, we have the possibility to design a large variety of optically active structures, thus expanding the range of CIL applications. Research utilizing chiral ionic liquids only recently has become more popular. However, it is the area that still has great potential for future development. This review aimed to describe the diversity of structures, properties and examples of applications of chiral ionic liquids as new chiral solid materials and chiral components of the anisotropic environment, providing chiral recognition of enantiomeric analytes, which is useful in liquid chromatography, countercurrent chromatography and other various CIL-based extraction techniques including aqueous biphasic (ABS) extraction systems, solid–liquid two-phase systems, liquid–liquid extraction systems with hydrophilic CILs, liquid–liquid extraction systems with hydrophobic CILs, solid-phase extraction and induced-precipitation techniques developed in the recent years. The growing demand for pure enantiomers in the pharmaceutical and food industries sparks further development in the field of extraction and separation systems modified with CILs highlighting them as affordable and environmentally friendly both chiral selectors and solvents.

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“Sweet” ionic liquid gels: materials for sweetening of fuels

Abstract: Ionic liquid gels, which are derived from renewable sugars, have been efficiently used as sorbent systems in desulfurisation of fuels.

Cited by 49 publications

References 84 publications

Carbohydrate-supramolecular gels: Adsorbents for chromium(VI) removal from wastewater

Carbohydrate-supramolecular gels: Adsorbents for chromium(VI) removal from wastewater

A magnetic self-contained thermochromic system with convenient temperature range

Chiral Ionic Liquids: Structural Diversity, Properties and Applications in Selected Separation Techniques

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