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Molecules
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State of the Art and Prospects for Deep Eutectic Solvents
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State of the Art and Prospects for Deep Eutectic Solvents

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Molecular Liquids".

Deadline for manuscript submissions: closed (15 June 2024) | Viewed by 2496

Special Issue Editors

Dr. Wei Jiang

E-Mail Website
Guest Editor
Institute for Energy Research, Jiangsu University, Zhenjiang 212013, China
Interests: deep eutectic solvents; ionic liquids; metal oxides; oxidative desulfurization; extractive desulfurization
Dr. Dechao Wang

E-Mail Website
Guest Editor
College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an, China
Interests: porous liquids; solvent-free nanofluids; advanced porous materials; metal-organic framework; gas adsorption and separation; membrane-based gas separation

Special Issue Information

Dear Colleagues,

With the increasing demand for green chemistry, various green solvents have been designed and developed as alternatives to volatile organic solvents. Deep eutectic solvents (DESs) have the merits of easy synthesis, easy availability of raw materials, low cost, and degradability, which will provide a broad prospect for material design and large-scale application. Up to now, DESs have been applied to extraction, separation, gas capture, drug delivery, energy storage, electrodeposition, catalysis, nanomaterial synthesis, etc.

This Special Issue "State of the Art and Prospects for Deep Eutectic Solvents" aims to provide a view of the most recent advances in the development and employment of DESs. The topics of interest include, but are not limited to, the synthesis of DESs, their physical and chemical characterization, and their application.

Dr. Wei Jiang
Dr. Dechao Wang
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Molecules is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • deep eutectic solvents
  • ionic liquids
  • extraction
  • catalysis
  • adsorption
  • conversion
  • theoretical calculation

Published Papers (2 papers)

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Research

16 pages, 4344 KiB  
Article
Designing Inorganic–Organic Dual-Acid Deep Eutectic Solvents for Synergistically Enhanced Extractive and Oxidative Desulfurization
by Dongao Zhu, Lixian Xu, Beibei Zhang, Linhua Zhu, Jing He, Hongping Li, Huaming Li and Wei Jiang
Molecules 2023, 28(23), 7743; https://doi.org/10.3390/molecules28237743 - 24 Nov 2023
Cited by 1 | Viewed by 1067
Abstract
Acidic deep eutectic solvents (DESs) have been considered desirable extractants and catalysts for desulfurization. However, their hydrogen bond donors (HBDs) are usually sole organic acids, which are not conducive to efficient green catalysis. Herein, a novel inorganic–organic dual-acid DES (DADES) was reported for [...] Read more.
Acidic deep eutectic solvents (DESs) have been considered desirable extractants and catalysts for desulfurization. However, their hydrogen bond donors (HBDs) are usually sole organic acids, which are not conducive to efficient green catalysis. Herein, a novel inorganic–organic dual-acid DES (DADES) was reported for efficient extractive and oxidative desulfurization. Benefiting from the physical interaction among the three components in a DADES, a transparent homogeneous liquid can be obtained even though inorganic acid (boric acid, BA) and organic acid (acetic acid, AA) can be immiscible. Furthermore, the dual-acid HBD can increase the acidity of the DADES and reduce its viscosity, accelerating its mass transfer efficiency and enhancing its catalytic activity. With 1-butyl-3-methylimidazolium chloride ([Bmim]Cl) as the hydrogen bond acceptor, [Bmim]Cl/BA/0.3AA effectively activated hydrogen peroxide and achieved sulfur removal of 96.6% at 40 °C. Furthermore, the universality of the synergistic effect in various DADESs was confirmed by the modulation of the types of organic acids. This study not only motivates the construction of more intriguing novel DESs based on the DADES concept but also highlights their potential in clean fuel production. Full article
(This article belongs to the Special Issue State of the Art and Prospects for Deep Eutectic Solvents)
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17 pages, 3796 KiB  
Article
The Effect of Organic Matter from Sewage Sludge as an Interfacial Layer on the Surface of Nano-Al and Fluoride
by Fan Gao, Xueqin Ma, Yi Tan, Bo Zhang, Yixing Yang, Hongqi Nie and Zhixiang Xu
Molecules 2023, 28(18), 6494; https://doi.org/10.3390/molecules28186494 - 7 Sep 2023
Cited by 4 | Viewed by 1123
Abstract
Due to its high reactivity, the nano aluminum particle (n-Al) has attracted more attention in energetic materials but is easily oxidized during processing. In order to realize sewage sludge (SS) resource and n-Al coating, the organic matter was extracted from SS, using the [...] Read more.
Due to its high reactivity, the nano aluminum particle (n-Al) has attracted more attention in energetic materials but is easily oxidized during processing. In order to realize sewage sludge (SS) resource and n-Al coating, the organic matter was extracted from SS, using the deep eutectic solvent method due to its strong dissolving capacity, and then the organic matter was pretreated by ball milling, which was used as an interfacial layer between n-Al and fluoride. It was found that organic matter was successfully extracted from SS. The main organic matter is proteins. The ball milling method can effectively destroy the secondary structure of proteins to release more active functional groups. During the pretreatment, the Maillard reaction broke the proteins structure to form more active low molecular weight compounds. It was confirmed that n-Al can be coated by PBSP under mild conditions to form a uniform core-shell structure. PFOA can effectively coat the n-Al@PBSP to form n-Al@PBSP/PFOA, which can enhance the combustion of n-Al. The gas phase flame temperature can notably improve to 2892 K. The reaction mechanism between n-Al and coating was analyzed. The results could help SS treatment and provide new insights for n-Al coating and SS-based organic matter recovery and utilization. Full article
(This article belongs to the Special Issue State of the Art and Prospects for Deep Eutectic Solvents)
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