Nanostructure of Deep Eutectic Solvents at Graphite Electrode Interfaces as a Function of Potential

Chen, Zhengfei; McLean, Ben; Ludwig, Michael; Stefanovic, Ryan; Warr, Gregory G.; Webber, Grant B.; Page, Alister J.; Atkin, Rob

doi:10.1021/acs.jpcc.5b10624

Cited by 69 publications

(74 citation statements)

References 58 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…37,38 Beisdes, Chen et al studied the EDLS for three different DESs on a highly ordered pyrolytic graphite (HOPG) electrode as a function of the applied potential using atomic force microscopy (AFM), contact angle measurements and density functional theory (DFT). 39 Their results revealed that the DESs interfacial structure can be described as a multilayer, where the number of layers is dependent on the surface polarization and the hydrogen bonding capacity of the HBD molecule. In addition, the DFT simulations indicated that in all cases the HBD (i.e., urea, ethylene glycol and glycerol) is away from the graphite interface at all potentials.…”

Section: Toc Graphicsmentioning

confidence: 99%

Atomistic Insight into the Electrochemical Double Layer of Choline Chloride–Urea Deep Eutectic Solvents: Clustered Interfacial Structuring

Mamme

Moors

Terryn

et al. 2018

J. Phys. Chem. Lett.

View full text Add to dashboard Cite

Green, stable and wide electrochemical window deep eutectic solvents (DESs) are ideal candidates for electrochemical systems. However, despite several studies of their bulk properties, their structure and properties under electrified confinement are barely investigated, which hinders the widespread use of these solvents in electrochemical applications. In this letter, we explore the electrical double layer structure of 1:2 choline chloride-urea (Reline), with a particular focus on the electrosorption of the hydrogen

show abstract

Section: Toc Graphicsmentioning

confidence: 99%

Atomistic Insight into the Electrochemical Double Layer of Choline Chloride–Urea Deep Eutectic Solvents: Clustered Interfacial Structuring

Mamme

Moors

Terryn

et al. 2018

J. Phys. Chem. Lett.

View full text Add to dashboard Cite

show abstract

“…However, DESs are usually less toxic, easier to prepare, and less expensive than ILs. These advantages have led to the recent increase in applications of DESs, for example, as solvents in diverse separation methods [4][5][6][7][8], media for chemical [9][10][11][12][13][14], electrochemical [15][16][17][18][19], and biological reactions [20,21], in polymer chemistry [22][23][24], and for increasing the solubility of active pharmaceutical ingredients [25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Design of Deep Eutectic Systems: A Simple Approach for Preselecting Eutectic Mixture Constituents

2020

View full text Add to dashboard Cite

Eutectic systems offer a wide range of new (green) designer solvents for diverse applications. However, due to the large pool of possible compounds, selecting compounds that form eutectic systems is not straightforward. In this study, a simple approach for preselecting possible candidates from a pool of substances sharing the same chemical functionality was presented. First, the melting entropy of single compounds was correlated with their molecular structure to calculate their melting enthalpy. Subsequently, the eutectic temperature of the screened binary systems was qualitatively predicted, and the systems were ordered according to the depth of the eutectic temperature. The approach was demonstrated for six hydrophobic eutectic systems composed of L-menthol and monocarboxylic acids with linear and cyclic structures. It was found that the melting entropy of compounds sharing the same functionality could be well correlated with their molecular structures. As a result, when the two acids had a similar melting temperature, the melting enthalpy of a rigid acid was found to be lower than that of a flexible acid. It was demonstrated that compounds with more rigid molecular structures could form deeper eutectics. The proposed approach could decrease the experimental efforts required to design deep eutectic solvents, particularly when the melting enthalpy of pure components is not available.

show abstract

“…Negative values of ΔG rxn can be used to indicate the thermodynamically feasibility. Previously, B3LYP and M062X have been used in the simulation of ChCl based DESs [31][32][33][34]. In Table 1, ΔG rxn values of easily obtained DESs were lower than 0, according to the ΔG rxn results of B3LYP (ΔGB3LYP rxn).…”

Section: Synthesis Of Dessmentioning

confidence: 98%

Facilely Reducing Recalcitrance of Lignocellulosic Biomass by a Newly Developed Ethylamine Based Deep Eutectic Solvent for Biobutanol Fermentation

Xing

et al. 2020

Preprint

View full text Add to dashboard Cite

Background: Biobutanol is promising and renewable alternative to traditional fossil fuels and could be produced by Clostridium species from lignocellulosic biomass. However, biomass is recalcitrant to be hydrolyzed into fermentable sugars attributed to the densely packed structure by layers of lignin. Development of pretreatment reagents and processes for increasing surface area, removing hemicellulose and lignin, and enhancing the relative content of cellulose is currently an area of great interest. Deep eutectic solvents (DESs), a new class of green solvents, are effective in the pretreatment of lignocellulosic biomass. However, it remains challenging to achieve high titers of total sugars and usually requires combinatorial pretreatment with other reagents. In this study, we aim to develop novel DESs with high application potential in biomass pretreatment and high biocompatibility for biobutanol fermentation.Results: Several DESs with betaine chloride and ethylamine chloride (EaCl) as hydrogen bond acceptors were synthesized. Among them, EaCl:LAC with lactic acid as hydrogen bond donor displayed the best performance in the pretreatment of corncob. Only by single pretreatment with EaCl:LAC, total sugars of as high as 53.5 g·L–1 could be reached. Consecutive batches for pretreatment of corncob were performed using gradiently decreased cellulase by 5 FPU·g–1. At the end of the sixth batch, the concentration and specific yield of total sugars were 58.8 g·L–1 and 706 g·kg–1 pretreated corncob, saving a total of 50% cellulase. Utilizing hydrolysate as carbon source, butanol titer of 10.4 g·L–1 was achieved with butanol yield of 137 g·kg–1 pretreated corncob by Clostridium saccharobutylicum DSM13864.Conclusions: Ethylamine and lactic acid based deep eutectic solvent is promising in pretreatment of corncob with high total sugar concentrations and compatible for biobutanol fermentation. This study provides an efficient pretreatment reagent for facilely reducing recalcitrance of lignocellulosic materials and a promising process for biobutanol fermentation from renewable biomass.

show abstract

Nanostructure of Deep Eutectic Solvents at Graphite Electrode Interfaces as a Function of Potential

Cited by 69 publications

References 58 publications

Atomistic Insight into the Electrochemical Double Layer of Choline Chloride–Urea Deep Eutectic Solvents: Clustered Interfacial Structuring

Atomistic Insight into the Electrochemical Double Layer of Choline Chloride–Urea Deep Eutectic Solvents: Clustered Interfacial Structuring

Design of Deep Eutectic Systems: A Simple Approach for Preselecting Eutectic Mixture Constituents

Facilely Reducing Recalcitrance of Lignocellulosic Biomass by a Newly Developed Ethylamine Based Deep Eutectic Solvent for Biobutanol Fermentation

Contact Info

Product

Resources

About