Studying Two Series of Ternary Deep Eutectic Solvents (Choline Chloride–Urea–Glycerol) and (Choline Chloride–Malic Acid–Glycerol), Synthesis and Characterizations

Kadhom, Mohammed; Abdullah, Ghassan H.; Albayati, Noor

doi:10.1007/s13369-017-2431-4

Cited by 50 publications

(23 citation statements)

References 28 publications

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“…Choline chloride:glycerol DES was reported in different molar ratios and mixtures [20,21]. Among those, 1:2 choline chloride: glycerol, respectively, was widely applied and investigated [22][23][24].…”

mentioning

confidence: 99%

Preparation of functionalised UiO‐66 metal–organic frameworks (MOFs) nanoparticles using deep eutectic solvents as a benign medium

Albayati

Kadhom

2020

Micro & Nano Letters

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UiO-66 nanoparticles (NPs) were prepared by the solvothermal method using deep eutectic solvents (DESs) and compared to those prepared using the traditional solvent, dimethylformamide. A mixture of choline chloride:glycerol with a molar ratio of 1:2 was used as a green solvent to prepare the NPs. SEM, a Fourier transform infrared spectrometer, zeta potential, N 2 adsorption/desorption, and surface area characterisations were used to characterise the NPs. Results showed that the NPs formed in the DES had a smaller size but the lower surface area and functionalised with new chemical groups due to the DES effect. Also, the modified metal-organic frameworks surface area increased by increasing the incubation time but decreased by increasing the temperature.

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confidence: 99%

Preparation of functionalised UiO‐66 metal–organic frameworks (MOFs) nanoparticles using deep eutectic solvents as a benign medium

Albayati

Kadhom

2020

Micro & Nano Letters

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“…Ternary DES has been reported as a new type of DES to widen the range of DES applications owing to the extra functionality provided by their components. One pertinent area where ternary DESs were recently applied is CO 2 capture, which demonstrates that DESs have great flexibility in terms of synthesis, forms, and applications [ 32 ]. In the current study, we selected a green ternary DES with ChCl as a hydrogen bond acceptor and glycerol and urea as hydrogen bond donors to provide an initial depolymerization of PET when coupled with MW irradiation and to facilitate PET enzymatic hydrolysis.…”

Section: Resultsmentioning

confidence: 99%

“…The synthesis of the ternary DES was based on the method provided by [ 32 ]. Prior to the preparation of DES, ChCl was dried overnight at 65 °C in the oven.…”

Section: Methodsmentioning

confidence: 99%

Progressing Ultragreen, Energy-Efficient Biobased Depolymerization of Poly(ethylene terephthalate) via Microwave-Assisted Green Deep Eutectic Solvent and Enzymatic Treatment

Attallah

Azeem²,

Nikolaivits

et al. 2021

Polymers

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Effective interfacing of energy-efficient and biobased technologies presents an all-green route to achieving continuous circular production, utilization, and reproduction of plastics. Here, we show combined ultragreen chemical and biocatalytic depolymerization of polyethylene terephthalate (PET) using deep eutectic solvent (DES)-based low-energy microwave (MW) treatment followed by enzymatic hydrolysis. DESs are emerging as attractive sustainable catalysts due to their low toxicity, biodegradability, and unique biological compatibility. A green DES with triplet composition of choline chloride, glycerol, and urea was selected for PET depolymerization under MW irradiation without the use of additional depolymerization agents. Treatment conditions were studied using Box-Behnken design (BBD) with respect to MW irradiation time, MW power, and volume of DES. Under the optimized conditions of 20 mL DES volume, 260 W MW power, and 3 min MW time, a significant increase in the carbonyl index and PET percentage weight loss was observed. The combined MW-assisted DES depolymerization and enzymatic hydrolysis of the treated PET residue using LCC variant ICCG resulted in a total monomer conversion of ≈16% (w/w) in the form of terephthalic acid, mono-(2-hydroxyethyl) terephthalate, and bis-(2-hydroxyethyl) terephthalate. Such high monomer conversion in comparison to enzymatically hydrolyzed virgin PET (1.56% (w/w)) could be attributed to the recognized depolymerization effect of the selected DES MW treatment process. Hence, MW-assisted DES technology proved itself as an efficient process for boosting the biodepolymerization of PET in an ultrafast and eco-friendly manner.

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“…In order to both support the micellization of cationic and anionic surfactant molecules and retain the urea functionality (which is essential to the solvothermal reaction mechanism creating inorganic oxide particles), as well as to explore the effect of urea content on solubility and self-assembly, we have used a three-component deep eutectic system comprising choline chloride, urea and glycerol in varying urea/glycerol ratios. Such a system has been briefly characterized by Kadhom et al, 42 but not put to any application. The behavior of cationic C n TAB surfactants and the anionic SDS in this ternary DES have been studied using small-angle neutron scattering (SANS) techniques.…”

Section: Introductionmentioning

confidence: 99%

Morphology Modulation of Ionic Surfactant Micelles in Ternary Deep Eutectic Solvents

et al. 2020

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Deep eutectic solvents (DES) are potentially greener solvents obtained through the complexation of simple precursors which, among other applications, have been investigated in recent years for their ability to support the self-assembly of amphiphilic molecules. It is crucial to understand the factors which influence surfactant solubility and self-assembly with respect to the interaction of the surfactant molecule with the DES components. In this work, small-angle neutron scattering (SANS) has been used to investigate the micellization of cationic (C n TAB) and anionic (SDS) surfactants in a ternary DES comprising choline chloride, urea, and glycerol, where the hydrogen bond donors are mixed in varying molar ratios. The results show that in each case either globular or rodlike micelles are formed with the degree of elongation being directly dependent on the composition of the DES. It is hypothesized that this composition dependence arises largely from the poor solubility of the counterions in the DES, especially at low glycerol content, leading to a tighter binding of the counterion to the micelle surface and giving rise to micelles with a high aspect ratio. This potential for accurate control over micelle morphology presents unique opportunities for rheology control or to develop templated syntheses of porous materials in DES, utilizing the solvent composition to tailor micelle shape and size, and hence the pore structure of the resulting material.

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Studying Two Series of Ternary Deep Eutectic Solvents (Choline Chloride–Urea–Glycerol) and (Choline Chloride–Malic Acid–Glycerol), Synthesis and Characterizations

Cited by 50 publications

References 28 publications

Preparation of functionalised UiO‐66 metal–organic frameworks (MOFs) nanoparticles using deep eutectic solvents as a benign medium

Preparation of functionalised UiO‐66 metal–organic frameworks (MOFs) nanoparticles using deep eutectic solvents as a benign medium

Progressing Ultragreen, Energy-Efficient Biobased Depolymerization of Poly(ethylene terephthalate) via Microwave-Assisted Green Deep Eutectic Solvent and Enzymatic Treatment

Morphology Modulation of Ionic Surfactant Micelles in Ternary Deep Eutectic Solvents

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