Article
Chemistry, Physical
Ci Jin, Muhan Chen, Mei Fan, Guoting Luo, Min Shao, Zhangjie Huang, Xiaoguang Xie
Summary: In this study, three novel phosphonium-based ILs were synthesized and successfully used for the recovery of Pd(II) from alkaline cyanide solutions, achieving an extraction percentage of greater than 99.0%. Furthermore, the TOUPB system exhibited excellent selectivity in a mixed solution and maintained a Pd(II) recovery percentage greater than 90.0% after five consecutive extraction-stripping cycles.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Biochemistry & Molecular Biology
Vadim V. Ermolaev, Daria M. Arkhipova, Vasili A. Miluykov, Anna P. Lyubina, Syumbelya K. Amerhanova, Natalia Kulik, Alexandra D. Voloshina, Valentine P. Ananikov
Summary: Structure-activity relationships play a vital role in the design of biocides and sanitizers, especially during the spread of resistant strains of pathogenic microbes. This study tested a range of sterically hindered quaternary phosphonium salts (QPSs) based on tri-tert-butylphosphine for their activity against bacteria and fungi, and examined their toxicity properties. The results demonstrate that certain QPSs show high activity against bacteria and possess antifungal properties. One specific QPS exhibits low cytotoxicity against human cells and high antimicrobial activity against methicillin-resistant Staphylococcus aureus (MRSA), making it a promising candidate for effective biocides.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Chemistry, Physical
Syane A. Satyawirawan, Robert W. Cattrall, Spas D. Kolev, Ines G. S. Almeida
Summary: This study investigated the solvent extraction of Co(II) from aqueous solutions using the ionic liquids [P66614][C272] and [P66614][SCN]. The results showed that the cation of the ionic liquids participated in the formation of ion-pairs in the organic phase, maintaining electroneutrality. The Co(II) coordination sphere geometry was tetrahedral, and the stoichiometric mole ratios between the ionic liquids and Co(II) were determined. The extraction of Co(II) was enhanced when the aqueous phase contained an anion with high lipophilicity.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Multidisciplinary
Wataru Yoshida, Masahiro Goto
Summary: The study examined the effects of structural modification on the performance of APILs as rhodium(iii) extractants, with [3 degrees C2P444][Cl] showing outstanding performance in extracting rhodium(iii) from HCl solution.
Article
Chemistry, Physical
Ju Sun, Colin S. M. Kang, Gongyue Huang, Federico Maria Ferrero Vallana, Ajit Kumar, Luke A. O'Dell, Montserrat Galceran, Oliver Hutt, Patrick C. Howlett, Maria Forsyth, Jennifer M. Pringle
Summary: This study reported a unique sodium battery electrolyte, utilizing a new family of salts and paired ions, which enables high-performance sodium batteries with stable sodium electrode plating/stripping and non-dendritic morphology.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Ju Sun, Colin S. M. Kang, Gongyue Huang, Federico Maria Ferrero Vallana, Ajit Kumar, Luke A. O'Dell, Montserrat Galceran, Oliver Hutt, Patrick C. Howlett, Maria Forsyth, Jennifer M. Pringle
Summary: Sodium batteries are a promising alternative to lithium batteries due to their cheaper resources and more sustainable materials. This study reports a unique family of salts that serve as stable electrolytes for high-performance sodium batteries. The electrolyte exhibits high ionic conductivity and supports stable sodium plating/stripping, demonstrating excellent electrochemical performance. In sodium metal full cells, the electrolyte shows satisfactory cycling performance and high capacity retention.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Shuo Lu, Tianyu Zheng, Jiawei Ma, Zhangming Deng, Shengmeng Qin, Yu Chen, Yong Liang
Summary: In this study, a new ionic ligand is developed and successfully used for the para-selective functionalization of aromatic salts. The reaction shows great potential in gram-scale transformation, late-stage elaboration for drug molecules, and diversification of products.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Physical
K. K. Thasneema, T. Dipin, M. Shahin Thayyil, Pramod K. Sahu, Mouslim Messali, Tancia Rosalin, K. K. Elyas, P. M. Saharuba, T. Anjitha, Taibi Ben Hadda
Summary: This study focused on the development of three phosphonium based room temperature ionic liquids (RTILs) for the extraction of toxic textile dyes, heavy metals, and phenolic compounds. The ILs showed potential for removal of pollutants, with adsorption of dyes increasing with contact time and achieving maximum decolorization at acidic pH and pH 7. The ILs also demonstrated efficient extraction of heavy metals and dyes, and phenolic compounds from industrial waste water. The thermal stability and non-toxicity of the ILs were examined, showing promising results for various technological applications.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Engineering, Chemical
Francesco Galiano, Raffaella Mancuso, Lorenzo Guazzelli, Michele Mauri, Cinzia Chiappe, Roberto Simonutti, Adele Brunetti, Christian S. Pomelli, Giuseppe Barbieri, Bartolo Gabriele, Alberto Figoli
Summary: This study developed novel polymeric membranes based on polymerized ionic liquids for CO2 separation, which showed a preference towards CO2 permeation in wet conditions and some membranes exceeded the Robeson upper bound for the CO2/H2 gas pair.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Chemistry, Organic
Anna C. Vetter, Declan G. Gilheany, Kirill Nikitin
Summary: Contrary to common belief, the use of strong bases in Wittig chemistry is unnecessary, as novel ion-pair phosphonium carboxylate reagents have been developed for efficient and clean olefination of aldehydes and hemiacetals. These reagents are easily prepared and can be stored as ylides.
Article
Chemistry, Physical
Arash Khajeh, Md Hafizur Rahman, Ting Liu, Pawan Panwar, Pradeep L. Menezes, Ashlie Martini
Summary: The thermal stability of ionic liquids is influenced by the chemistry of the ions. This study demonstrated that phosphonium benzoate is less stable than phosphonium salicylate, and the cation chain length has little effect on thermal stability. The thermal decomposition mechanisms were categorized into proton-transfer, association, and dissociation reactions, and phosphonium benzoate exhibited a wider range of reaction pathways compared to phosphonium salicylate.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Metallurgy & Metallurgical Engineering
Tatsuki Igosawa, Masahiko Matsumiya, Yuji Sasaki
Summary: A novel hydrometallurgical process using phosphonium-based ionic liquids (ILs) was developed to efficiently recover W(VI) from spent tungstophosphate catalyst. The process involved leaching, precipitation, solvent extraction (SX), and crystallization stripping. 详见以上。
Article
Chemistry, Multidisciplinary
Alok Rout, Nagarajan Ramanathan
Summary: This study investigated the solvent extraction of Zr(IV) in an undiluted phosphonium based ionic liquid and its selective separation from Ln(III) and An(III). The results showed that Zr(IV) was efficiently extracted in the IL phase without any external ligand, while Eu(III)/Am(III) were negligibly extracted, leading to significant separation factors for Zr(IV). The study also examined the thermodynamics of extraction and stripping of Zr(IV) from the IL phase using a suitable stripping solution.
Article
Metallurgy & Metallurgical Engineering
Masahiko Matsumiya, Daiki Nomizu, Yusuke Tsuchida, Yuji Sasaki
Summary: The study investigated the synergistic solvent extraction mechanism of lanthanide(III) using a mixture of D2EHPA and MIDPA in phosphonium-based ionic liquid, finding that the complex formed with the synergistic effect was more stable. Thermodynamic analysis revealed that the synergistic extraction reaction is endothermic. Furthermore, the study explored the potential for separating Dy(III) from Pr(III) and Nd(III) based on their separation factors.
Review
Chemistry, Inorganic & Nuclear
Victor M. Chernyshev, Oleg Khazipov, Dmitry B. Eremin, Ekaterina A. Denisova, Valentine P. Ananikov
Summary: This review discusses the formation pathways of Pd nanoparticles and clusters in catalytic systems, as well as the mechanisms of stabilizing these nanoparticles using ionic nitrogen compounds. Ionic nitrogen compounds have various effects on catalytic processes, including potentially participating in catalytic cycles and influencing unwanted side reactions.
COORDINATION CHEMISTRY REVIEWS
(2021)
Article
Engineering, Chemical
Yunfei Yu, Xue Yang, Chenchen Zhang, Jie Chen, Wei Lin, Jianqiang Meng
Summary: This study reports an environmentally friendly and simple approach for preparing double-network (DN) ion gel membranes with high strength and excellent gas separation performance. By optimizing crosslinking density, mass ratio, and the type and content of free ionic liquid, the mechanical and gas separation properties of the DN membrane are improved.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Si-qi Jiang, Qiang Gao, Xi-guang Li, Chao-zhu Deng, Jun Qiu, Xiang-nan Zhu
Summary: A dual-strengthening pretreatment method is proposed to remove PVDF more efficiently and enhance the leaching of LiCoO2. Experimental results show that dual-strengthening pretreatment can effectively remove PVDF and significantly improve the leaching efficiency compared to single pretreatment methods.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Zengchi Hu, Xiaoyu Wang, Xiaohui Zhang, Xue Li, Jiangbin Xia
Summary: The rapid fabrication of high-performance composite membranes based on CMPs using simple and low-cost methods is challenging. In this study, three CMPs-based composite membranes were rapidly fabricated with adjustable size using unidirectional diffusion synthesis. The microstructural design enhanced the rejection rates of the membranes and they showed strong hydrolytic resistance, thermal stability, and acid-base resistance. Electrostatic adsorption and the adjustable microstructures significantly varied the repellence of the membranes to different charged molecules.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Farzaneh Rouhani, Matineh Ayedi, Nasser Safari
Summary: Introducing defects into porous metal-organic frameworks is important for improving their adsorption performance. Quasi-MOFs, an underutilized variant of large-scale, fundamentally deficient MOFs, have been found to have substantial amounts of unsaturated metal sites to offset the drawbacks of MOFs. In this study, a quasi-MOF was produced using a water-stable MOF and demonstrated significantly improved phosphate adsorption capability due to the presence of defect sites.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Valentin Reungoat, Morad Chadni, Louis M. M. Mouterde, Fanny Brunissen, Florent Allais, Helene Ducatel, Irina Ioannou
Summary: This study focuses on the recovery of sinapic acid using liquid-liquid extraction assisted by a hollow fiber membrane contactor from an aqueous feed obtained through the hydrolysis of mustard bran. The screening of solvents of different chemical nature showed that all tested solvents had an extraction efficiency of more than 80% for pH < 5. Four solvents were selected for use in the hollow fiber membrane contactor, and the volatile solvents showed higher mass transfer coefficients compared to non-volatile solvents. The extraction efficiency was intensified by increasing the initial concentration of sinapic acid and the feed-to-solvent ratio. CPME was found to have optimal recovery efficiency at a phase ratio of 8:1, yielding 0.9 g of sinapic acid per liter of CPME used.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Takahiro Sakamoto, Takafumi Hanada, Hayate Sato, Mayu Kamisono, Masahiro Goto
Summary: The emergence of the battery society has led to a high demand for battery metals, resulting in a strain on their supply. This study introduces a novel technique using a hydrophobic deep eutectic solvent (DES) for leaching and recovering battery metals from low-grade nickel laterite ores. The DES enables selective leaching and recovery of the metals, offering a promising pathway for the extraction of critical battery metals.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Rongrong He, Jiarui Chen, Chunyao Zhang, Dan Lu, Lin Zhang, Tao He
Summary: Researcher has developed a method to quantify the charge density in nanofiltration (NF) membrane separation layer and applied it in NF membranes that can separate Mg2+ and Li+. The results showed that overcompensated amine groups played a major role, and there was a linear relationship between charge density and coating bi-layers or PAH layers.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Zhijian Zhang, Min Chen, Zhe Lin, Zhichao Yang, Yafeng Du, Zhihui Chen, Zhenhao Yang, Kongyin Zhao, Ligang Lin
Summary: Membrane technology plays an important role in molecular/ion separation processes, but faces challenges such as membrane fouling. This study introduces a new ion-crosslinking method to fabricate copper alginate hydrogel membranes with improved mechanical strength and antimicrobial capabilities. The membranes exhibit excellent separation performance and enhanced long-term molecule/ion separation through improved anti-swelling properties. Molecular dynamics simulations and life cycle analysis highlight the pore structure and environmental friendliness of the hydrogel membranes. These findings provide valuable insights for developing sustainable hydrogel membranes with stable performance and high separation efficiency.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Dongmei Liu, Aiying Guo, Yanling Qi, Zhixin Ji, Hongjuan Li, Zhiwei Zhang, Xinyue Zhang, Kunze Wu, Aijun Cai
Summary: In this study, a stable magnetic Mg/Mn-layered double oxide-doped biochar composite (MgMnLDO-MBC) was prepared and successfully used for the removal of antibiotics and bacteria from wastewater. The composite exhibited enhanced surface areas, adsorption sites, and free radicals, leading to improved catalytic activity. The effects of different factors on the removal efficiency were evaluated, and the composite showed good reusability.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Feng Wang, Zhaoyong Bian, Yaru Zhang, Wenchao Yu, Qiang Zhang, Hui Wang
Summary: In this study, a nanofibrous layered structure of Ff-Ti3C2Tx-Co3O4 was prepared by self-assembling nanofibrous Co3O4 with lamellar fluorine-free MXene (Ff-Ti3C2Tx). The Ff-Ti3C2Tx-Co3O4 exhibited excellent catalytic activity for degradation, resistant to ionic interference, and maintained high removal efficiency of sulfamethoxazole (SMX) in municipal wastewater. The rapid SMX degradation involved fast electron transfer in redox cycles with PMS and the generation of 1O2 via PMS ->center dot O2 -> 1O2. This work provides new insights into antibiotic degradation mechanisms and electron transfer based on PMS activation.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Weipeng He, Jiacheng Luo, Yujie Wu, Tianhao Luo, Chen Tang
Summary: This study comparatively evaluated the role of cationic, anionic, and nonionic polyacrylamides (PAMs) in ballasted flocculation of clay suspensions under different aluminum sulfate (AS) coagulant dosages. The selection of PAMs and AS dosage had a significant influence on the size and shear resistance of ballasted floc aggregates.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Lixian Wang, Lizhi Zhao, Didi Si, Zhixin Li, Huiqin An, Hui Ye, Qingping Xin, Hong Li, Yuzhong Zhang
Summary: Metalloporphyrin-based nanozymes integrated with poly (vinylidene fluoride) membrane show high catalytic activity and reusability for the decolorization of Congo Red dye in continuous flow process.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Yongfei Ma, Chenyu Zeng, Yongzhen Ding, Jiayi Tang, Ondrej Masek, Zhikang Deng, Rui Mu, Zulin Zhang
Summary: In this study, sludge-derived biochar (SBC) was functionalized with various iron salts to enhance its adsorption ability for sulfamethoxazole (SMX) and magnetic collection performance. Ball milling was further employed to treat the optimal iron salt functionalized SBC (MSBC), resulting in ball milled SBC (BMSBC) with improved adsorption performance for SMX. The dominant driving mechanism for SMX adsorption onto BMSBC was confirmed to be multiple physicochemical forces, including 7C-7C conjugation, pore filling, H-bonding, Fe-O complexation, and electrostatic interactions. BMSBC exhibited favorable adsorption ability for SMX in actual waters and could be easily collected within 1 min due to its magnetic sensitivity.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Jinglin Tan, Xiaohui Mao, Wenjihao Hu, Hongbo Zeng
Summary: This study investigates the influence of PDMS chain architectures on surface properties and reveals that PDMS coatings with looped structures exhibit superior hydrophobicity, self-cleaning, and water sliding compared to coatings with linear structures. Additionally, both looped and linear PDMS coated stainless steel mesh/polyester fibers show efficient separation of oil/water mixture.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Wei-Liang Chen, Chih-Chia Cheng, Chien-Hsing Lu, Jem-Kun Chen
Summary: This study designs a novel sandwich-structured capacitor that reduces the absorption time of pollutants using dielectrophoresis force. By coating graphene oxide on polystyrene microspheres as adsorbents and encapsulating them within the capacitor, the adsorption rate is significantly enhanced. Additionally, frequency manipulation allows for the recycling of adsorbents and concentration of dyes, minimizing secondary pollution.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)