Article
Chemistry, Physical
Liuya Fang, Zhi Shen, Xizhou Shen, Shunji Kang, Hao Song, Tian Liang
Summary: The chemical composition of model oils significantly affected the desulfurization rate and selectivity. Molecular compositions with higher π electron cloud densities or more similar structures to the extractants resulted in lower desulfurization rates and selectivities. Furthermore, the C-H...π interaction between the molecular compositions and the extractant had a greater influence on desulfurization rate and selectivity than the ring structure.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Physical
Xuening Feng, Huanyu Liu, Hanjun Liu, Xuebin Jiang, Liwei Shen, Yuqi Tang, Qian Qu, Dong Xiang, Xuemin Yan, Yuanzhu Mi
Summary: A new type of ionic liquid demulsifier, HDEA-TFA, with both hydrophilic and hydrophobic chains, was synthesized and identified with its chemical structure. It showed excellent demulsifying ability for two water-in-crude oil (W/O) emulsions with different ratios. The influences of demulsification conditions on the demulsifying efficiency (DE) were discussed, and the results indicated that HDEA-TFA could achieve 100% DE within 120 minutes at a concentration of 500 mg/L and a temperature of 60℃. Moreover, HDEA-TFA exhibited remarkable resistance to acidity, alkalinity, and salinity. The demulsifying mechanism was investigated through various measurements, and this study provided a reference for further research on demulsification mechanisms.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Review
Chemistry, Analytical
Idaira Pacheco-Fernandez, Raul Gonzalez-Martin, Francisca A. e Silva, Mara G. Freire, Veronica Pino
Summary: The successful mode of liquid-phase microextraction (LPME) is dispersive liquid-liquid microextraction (DLLME), with advances focused on utilizing green, smart, and tunable materials as extraction solvents to enhance sustainability and efficiency. Hydrophilic media are considered a promising alternative for improving mass transfer and extraction efficiency.
ANALYTICA CHIMICA ACTA
(2021)
Article
Biochemical Research Methods
Xiaoqing Wang, Jian Cui, Jin Zhou, Shuo Wang, Yiming Gu, Xiaowei Liu, Shudong Wang
Summary: Vinyl modified silica was synthesized through a silane coupling reaction and a poly-acrylamide modified silica (PAM-SIL) stationary phase was prepared via free radical polymerization. The separation performance of the stationary phases could be regulated by controlling the polymer structure, showing potential for future separation and analysis applications.
JOURNAL OF CHROMATOGRAPHY A
(2023)
Article
Chemistry, Physical
Farzin Saffarimiandoab, Roozbeh Sabetvand, Xihui Zhang
Summary: This study investigates various desalination mechanisms of capacitive deionization (CDI) systems and their relationship with performance. The results show that the microscopic properties of the confined electrolytes directly influence the water cluster structure and desalination performance. Additionally, factors such as ionic species solvation structure, capacitance, and charge efficiency are found to have complex relationships with desalination capacity.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Nanoscience & Nanotechnology
Walter A. Parada, Dmitry V. Vasilyev, Karl J. J. Mayrhofer, Ioannis Katsounaros
Summary: In this study, a group of hydrophobic imidazolium-based ILs were immobilized on Ag foams using SCILL method, leading to altered selectivity and CO production rates for the electrochemical reduction of CO2. The change in activity caused by IL is dependent on the length of the N-alkyl substituent, with the rate of CO production optimized at moderate chain length and IL loadings.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Rahman Md Moshikur, Islam Md Shimul, Shihab Uddin, Rie Wakabayashi, Muhammad Moniruzzaman, Masahiro Goto
Summary: In this study, we synthesized 12 oil-miscible ionic liquid drugs and found that one formulation containing oleate had 2.6 times higher permeation ability than the traditional levamisole salt. Animal experiments showed that the levamisole ionic liquid had higher plasma concentration and longer elimination half-life compared to the levamisole salt. Additionally, the levamisole ionic liquid demonstrated excellent biocompatibility. Therefore, oil-miscible ionic liquid drugs provide a simple and scalable strategy for the design of effective transdermal drug delivery systems.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Agricultural Engineering
Xiaocong Liang, Zhekun Huang, Jingyan Zhang, Yongkang Guo
Summary: The scale-up utilization of ionic liquids is limited by their extravagant price and lack of high-efficiency recovery technology. In this study, an economical assessment was performed to determine the economic efficiency of electrodialysis-based ionic liquid recovery and recycling in biomass processing. The overall recovery cost of different ionic liquids varied within certain ranges when factors related to equipment and finance were changed. The assessment confirmed the economic efficiency of electrodialysis for ionic liquids recovery and recycling in biomass processing.
BIORESOURCE TECHNOLOGY
(2023)
Article
Chemistry, Physical
Artashes A. Khachatrian, Timur A. Mukhametzyanov, Ramazan Z. Salikhov, Marat Safin, Dmitry G. Yakhvarov, Bulat F. Garifullin, Olga S. Terenteva, Pavel L. Padnya, Ivan I. Stoikov, Alexandra D. Voloshina, Boris N. Solomonov
Summary: The intermolecular interactions between cholinium-based ionic liquids and biological origin anions with bovine serum albumin and human serum albumin were studied using spectral and computational methods. It was observed that the ionic liquids caused a partial loss of ternary structure of albumins at higher concentrations. The thermal stability of proteins increased in the presence of ionic liquids. Fluorescence spectroscopy and molecular docking techniques were used to estimate the interaction between ionic liquids and serum albumins.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Biochemical Research Methods
Houmei Liu, Pian Jin, Mi Jiang, Yu Duan, Guozheng Zhu, Hui Yu, Hongdeng Qiu
Summary: In this work, five amine-ligands were functionalized on mesoporous micro-silicas as stationary phases for HILIC. Among them, di-amine and tri-amine functionalized stationary phases showed outstanding separation and retention abilities, providing potential for exploring novel HILIC stationary phases.
JOURNAL OF CHROMATOGRAPHY A
(2021)
Article
Chemistry, Analytical
Lizhen Qiao, Ruiting Sun, Yuan Tao, Chunmei Yu, Yang Yan
Summary: A novel surface-confined guanidinium ionic liquid stationary phase was developed and characterized, showing hydrophilic interaction liquid chromatography/anion-exchange mixed-mode retention behavior. The potential of this stationary phase as an alternative for high-performance liquid chromatography was demonstrated through evaluation using a high-performance liquid chromatography column.
JOURNAL OF SEPARATION SCIENCE
(2021)
Article
Materials Science, Textiles
Zhe Jiang, Yiyi Zhang, Qiang Wang, Ping Wang, Yuanyuan Yu, Man Zhou, Ende Li
Summary: Research indicates that surface modification of wool using thiol-based ionic liquid can enhance its shrink-resistance, washing/felting, dyeing properties, and improve hydrophilic performance without causing fiber damage. The method shows potential for large-scale production and offers a more environmentally friendly alternative to previous techniques.
JOURNAL OF NATURAL FIBERS
(2022)
Article
Engineering, Chemical
Yuqiu Chen, Xinyan Liu, Yang Lei, Xiaodong Liang, Rafiqul Gani, Georgios M. M. Kontogeorgis
Summary: Ionic liquids (ILs) have gained significant attention in academia and industries for their excellent performance in various applications. Efficient recovery of ILs from dilute aqueous solutions is crucial for the acceptance and implementation of IL-based technologies by industry. In this study, a practical and cost-effective hybrid process design combining aqueous two-phase extraction, membrane separation, and distillation was proposed for the recovery of hydrophilic ILs.
Article
Engineering, Marine
Qingchao Fang, Xin Zhao, Sunbo Li, Zhengsong Qiu, Zhiyuan Wang, Qi Geng
Summary: In this study, the effect of Tween and Span series surfactants with different HLB values on the cohesive force between cyclopentane hydrate particles was investigated. The results showed that the cohesive force decreased with decreasing HLB for both Tween and Span surfactants. The cohesive force increased with increasing concentration of Tween surfactants, while it decreased with increasing concentration of Span surfactants. The mechanism behind these effects was attributed to the aggregation of low-HLB surfactant molecules at the oil-water or gas-water interface, which increased the surface roughness and hydrophobicity of the hydrate particles, thus inhibiting the formation of liquid bridges between particles.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Chemistry, Analytical
Ye Shu, Tong Chen, Tao Liu, Hechen Xu, Jinjin He, Zhihui Cai, Wanning Zhu, Zihan Zhao, Jun Jiang
Summary: In this study, spherical silica was modified with imidazole, amide, and sulfonic acid. The modified silica was used to create novel polymerization stationary phases for hydrophilic interaction liquid chromatography (HILIC). Various characterization techniques were employed to analyze the stationary phases, and their performance was evaluated using high performance liquid chromatography. The HILIC stationary phases exhibited excellent retention properties and selectivity compared to the conventional C18 column. They were successfully applied for the separation of sulfonamides, flavonoids, and Fructus Ligustri Lucidi extracts. Overall, the prepared surface polymeric stationary phases showed great potential for the analysis of polar components and complex samples.
MICROCHEMICAL JOURNAL
(2023)
Article
Engineering, Environmental
Jong-Won Choi, Jisu Kim, Sung-Kon Kim, Yeoung-Sang Yun
Summary: This study proposes a simple and green approach to recover NiMnCoC2O4 from spent LiNiMnCoO2 (NMC) batteries as an electrode material for high-performance pseudocapacitors. The recovery process involves leaching and separation steps, achieving high efficiency and stability for energy storage applications.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Environmental
Xiaoyu Lin, Duy Tho Tran, Myung-Hee Song, Yeoung-Sang Yun
Summary: The study fabricated QPCFs for the recovery of Au(I) from alkaline e-waste leachate. QPCFs exhibited high adsorption performance and fast adsorption rate. Application of QPCFs in bioleaching solution showed high recovery efficiency for Au with selectivity.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Environmental
Jong -Won Choi, Chul-Woong Cho, Yeoung-Sang Yun
Summary: This research demonstrated that water-soluble organic acids can be used as green leachants for extracting strategic metals from spent lithium-ion batteries, and developed a model based on linear free energy relationships to predict leaching efficiency. By considering both toxicity and leaching efficiency, citric acid was selected as a green and efficient leachant, with the additional use of glucose and microwave treatment improving leaching performance further.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Environmental
Bo-Gyeon Cho, Se-Been Mun, Che-Ryong Lim, Su Bin Kang, Chul-Woong Cho, Yeoung-Sang Yun
Summary: Cellulose can be used as a raw material for filters and adsorbents to remove micropollutants, with microcrystalline cellulose showing high adsorption affinity, especially for cationic micropollutants. A model based on the linear free energy relationship equation was developed to predict adsorption affinity values with an R2 of 0.895, and internal and external validation studies confirmed the model's reasonableness and acceptability with an SE = 0.207 log unit.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Chul-Woong Cho, Yeoung-Sang Yun
Summary: Ionic liquids (ILs) are a class of chemicals with controllable properties through modification of their chemical structure. This study developed a predictive model for the dielectric constant of ILs using the linear free-energy relationship equation. The research revealed that the structure of cations has a greater influence on the dielectric constant, and the H-bonding acidity of cations and basicity of anions, as well as the dipolarity/polarizability of cations and anions, are important factors in the prediction.
KOREAN JOURNAL OF CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
John Kwame Bediako, Jong-Won Choi, Myung-Hee Song, Yeoung-Sang Yun
Summary: This study presents a strategy to separate and recover copper and gold from waste PCBs using polyethylenimine-polyacrylic acid composite adsorbents. By adjusting the mixing ratio of PEI and PAA, the metals can be recovered as single constituents or an alloy. This method shows promise for future studies on the recovery of metallic minerals from bioleachates.
RESOURCES CONSERVATION AND RECYCLING
(2022)
Article
Polymer Science
Sok Kim, Yun Hwan Park, Yoon-E Choi
Summary: The excessive inflow of phosphorus causing eutrophication in freshwater environments and harmful algal blooms (HABs) is a serious environmental issue. A polyvinyl chloride-polyethyleneimine (PEI-PVC) composite fiber is suggested as a stable and recoverable adsorbent for efficient phosphorus removal.
Article
Materials Science, Multidisciplinary
John Kwame Bediako, Ji-Hye Kang, Yeoung-Sang Yun, Soo-Hyung Choi
Summary: This study explores seamless polyelectrolyte complex (PEC) processing techniques for fabricating adsorbents in wastewater treatment. The phase transition of PEC complexes was studied, and spherical PEC resins were successfully prepared. The PEC resins showed outstanding performance for heavy metal adsorption in wastewater treatment.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Environmental Sciences
Zhuo Wang, Su Bin Kang, Euntae Yang, Sung Wook Won
Summary: This study analyzed the characteristics of PVC-based adsorptive nanofiber membranes and tested their ability to treat wastewater containing reactive dyes. The results showed that PEI/PVCM is a reusable membrane for efficient purification of wastewater containing reactive dyes.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Biochemistry & Molecular Biology
Zhuo Wang, Sung Wook Won
Summary: This study reports the preparation of amine-functionalized multiwall carbon nanotubes (MWCNTs) using a simple method for the rapid and efficient removal of Reactive Yellow 2 (RY2) from water. The modified MWCNTs showed an increase in N content and a decrease in specific surface area, average pore size, and total pore volume. The optimal pH for RY2 removal was found to be 2, and the maximum RY2 uptake was calculated to be 714.29 mg/g using the Langmuir model. Thermodynamic studies revealed that the adsorption process was spontaneous and endothermic. The PEI/APTES-MWCNTs demonstrated good reusability for RY2 removal. Overall, the PEI/APTES-MWCNTs are a potential and efficient adsorbent for treating reactive dye wastewater.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Applied
Su Bin Kang, Zhuo Wang, Sung Wook Won
Summary: A new adsorbent with effective Pd(II) adsorption ability was synthesized using oyster shell and fumed silica as matrix materials and polyethyleneimine as a functional ligand. Characterization of the samples revealed the potential of the adsorbent for Pd(II) recovery. Isotherm experiments showed the maximum Pd(II) uptake by the adsorbent, which was significantly higher than other materials tested.
ADSORPTION SCIENCE & TECHNOLOGY
(2023)
Review
Chemistry, Physical
Haribandhu Chaudhuri, Yeoung-Sang Yun
Summary: The growing global demand for sustainable energy has led researchers to focus on the development of smart hierarchical 2D materials and their composites. 2D materials, especially MXenes, LDHs, and GO, have shown great promise in energy storage due to their unique features. The combination of GO-based 2D materials, particularly GO/LDHs and GO/MXenes, can enhance energy conversion and storage potentials. This review discusses the properties, applications, structure-property-performance correlation, challenges, and future opportunities of GO/LDHs and GO/MXenes in energy storage.
JOURNAL OF POWER SOURCES
(2023)
Article
Environmental Sciences
Sung Il Yoon, Minhee Han, Haribandhu Chaudhuri, Yeoung-Sang Yun
Summary: A fixed-bed high-capacity/high-rate hybrid column was developed using commercial ionexchange beads and ion-exchange fibers. The hybrid column exhibited excellent breakthrough bed volume and utilization efficiency of capacity at a high service flow rate for the adsorption of Cd(II). The regeneration experiment showed high capacity retention.
ENVIRONMENTAL RESEARCH
(2023)
Article
Green & Sustainable Science & Technology
Zhuo Wang, Su Bin Kang, Sung Wook Won
Summary: This study proposes a dissolution-modification-reforming method to convert PVC waste into highly efficient adsorbents (PEI/PVC NFMs) for the removal of ionic pollutants from water. The results show that increasing the mass ratio of PEI to PVC enhances the adsorption performance of PEI/PVC NFMs and improves their stability and recyclability in acidic and alkaline environments. The PEI/PVC NFM also exhibits good adsorption potential for various ionic pollutants.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Chemistry, Physical
Haribandhu Chaudhuri, Che-Ryong Lim, Yeoung-Sang Yun
Summary: This study presents the development of a highly loaded carboxylic acid functionalized sulfur-containing POSS (POSS-S-COOH) with exceptional adsorption capabilities for platinum (Pt) and palladium (Pd) ions. The adsorbent exhibited high selectivity towards Pt and Pd ions in the presence of other metal ions. It also demonstrated proficient recovery capabilities without the need for harsh desorbents. Thermodynamic and density functional theory calculations supported the experimental findings. The acid-resistant nature of POSS-S-COOH makes it a promising adsorbent for industrial applications.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)