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Deng H, Liu C, Xu X, Wu Y, Chen M, Huang Z. Separation of Palladium from Alkaline Cyanide Solutions through Microemulsion Extraction Using Imidazolium Ionic Liquids. Int J Mol Sci 2023; 24:10709. [PMID: 37445887 DOI: 10.3390/ijms241310709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 06/16/2023] [Accepted: 06/20/2023] [Indexed: 07/15/2023] Open
Abstract
In this paper, three imidazolium-based ionic liquids, viz., 1-butyl-3-undecyl imidazolium bromide ([BUIm]Br), 1-butyl-3-octyl imidazolium bromide ([BOIm]Br), and 1-butyl-3-hexadecyl imidazolium bromide ([BCIm]Br), were synthesized. Three novel microemulsions systems were constructed and then were used to recover Pd (II) from cyanide media. Key extraction parameters such as the concentration of ionic liquids (ILs), equilibration time, phase ratio (RA/O), and pH were evaluated. The [BUIm]Br/n-heptane/n-pentanol/sodium chloride microemulsion system exhibited a higher extraction percentage of Pd (II) than the [BOIm]Br/n-heptane/n-pentanol/sodium chloride and [BCIm]Br/n-heptane/n-pentanol/sodium chloride microemulsion systems. Under the optimal conditions (equilibrium time of 10 min and pH 10), the extraction percentages of these metals were all higher than 98.5% when using the [BUIm]Br/n-heptane/n-pentanol/sodium chloride microemulsion system. Pd(CN)42- was separated through a two-step stripping procedure, in which Fe (III) and Co (III) were first separated using KCl solution, then Pd(CN)42- was stripped using KSCN solution (separation factors of Pd from Fe and Co exceeded 103). After five extraction-recovery experiments, the recovery of Pd (II) through the microemulsion system remained over 90%. The Pd (II) extraction mechanism of the ionic liquid [BUIm]Br was determined to occur via anion exchange, as shown by spectral analysis (UV, FTIR), Job's method, and DFT calculations. The proposed process has potential applications for the comprehensive treatment of cyanide metallurgical wastewater.
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Affiliation(s)
- Hui Deng
- School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Chali Liu
- School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Xin Xu
- School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Yuanyuan Wu
- School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Muhan Chen
- School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Zhangjie Huang
- School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
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A thermodynamic investigation of the effect of cationic structure on the self-aggregation behavior of Surface-Active ionic liquids in the presence of an amino acid. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.118904] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Ali H, Khan A, Ahmad T, Dervisi A, Fallis I, Shoetan IO, Khan A, Hussain A, Griffiths P. Interfacial activity and micellar morphology of an imidazolium ring containing zwitterionic surfactants. J SURFACTANTS DETERG 2022. [DOI: 10.1002/jsde.12573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Hazrat Ali
- Department of Chemistry University of Mianwali Mianwali Pakistan
| | - Azim Khan
- Institute of Chemical Sciences Gomal University Dera Ismail Khan Pakistan
| | - Tauqeer Ahmad
- Department of Chemistry University of Mianwali Mianwali Pakistan
| | | | - Ian Fallis
- School of Chemistry Cardiff University Cardiff UK
| | | | - Abbas Khan
- Department of Chemistry Abdul Wali Khan University Mardan Mardan Pakistan
| | - Arshad Hussain
- Department of Chemistry University of Science and Technology Bannu Bannu Pakistan
| | - Peter Griffiths
- Faculty of Engineering and Science University of Greenwich Kent UK
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Sarkar S, Ammath S, Kirubananthan S, Suneesh AS. Investigation of the Phase Splitting Behaviour of U(VI) and Th(IV) loaded Trialkyl Phosphate Solvents in the Absence of Aqueous Phase. ChemistrySelect 2021. [DOI: 10.1002/slct.202103023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Subramee Sarkar
- Homi Bhabha National Institute Indira Gandhi Centre for Atomic Research Kalpakkam 603102 India
- Materials Chemistry and Metal Fuel Cycle Group Indira Gandhi Centre for Atomic Research Kalpakkam 603 102 India
| | - Suresh Ammath
- Homi Bhabha National Institute Indira Gandhi Centre for Atomic Research Kalpakkam 603102 India
- Materials Chemistry and Metal Fuel Cycle Group Indira Gandhi Centre for Atomic Research Kalpakkam 603 102 India
| | - Subashree Kirubananthan
- Homi Bhabha National Institute Indira Gandhi Centre for Atomic Research Kalpakkam 603102 India
- Materials Chemistry and Metal Fuel Cycle Group Indira Gandhi Centre for Atomic Research Kalpakkam 603 102 India
| | - Asokan Sudha Suneesh
- Materials Chemistry and Metal Fuel Cycle Group Indira Gandhi Centre for Atomic Research Kalpakkam 603 102 India
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Kaur N, Kumar S, Shiksha, Gahlay GK, Mithu VS. Cytotoxicity and Membrane Permeability of Double-Chained 1,3-Dialkylimidazolium Cations in Ionic Liquids. J Phys Chem B 2021; 125:3613-3621. [PMID: 33818103 DOI: 10.1021/acs.jpcb.1c00592] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We have evaluated ionic liquids based on double-chained 1-alkyl-3-octylimidazolium cations ([CnC8IM]+, n = 2, 4, 6, 8, 10, 12) for their cytotoxicity toward various cell lines. The toxicity of ionic liquids was correlated to their ability to partition into and permeabilize phosphocholine (POPC)- or phosphoglycerol (POPG)-based large unilamellar vesicles. Membrane partitioning of ionic liquids was assessed using the ζ-potential measurements, and membrane permeability was determined using fluorescence-based dye leakage assays. Both cytotoxicity and membrane permeability of these ILs were found to increase in a sigmoidal fashion with increasing chain length on the N1 atom (n in [CnC8IM]+) cations. These results were compared with those for ionic liquids based on single-chained 1-alkyl-3-methylimidazolium cations ([Cn+8C1IM]+), carrying a similar number of carbon atoms but as a single alkyl chain. Our studies show that ionic liquids containing double-chained cations are relatively less cytotoxic and membrane-permeabilizing than the cations bearing a single long alkyl chain.
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Affiliation(s)
- Navleen Kaur
- Department of Chemistry, Guru Nanak Dev University, Amritsar 143005, India
| | - Sandeep Kumar
- Department of Chemistry, Guru Nanak Dev University, Amritsar 143005, India
| | - Shiksha
- Department of Chemistry, Guru Nanak Dev University, Amritsar 143005, India
| | - Gagandeep Kaur Gahlay
- Department of Molecular Biology and Biochemistry, Guru Nanak Dev University, Amritsar 143005, India
| | - Venus Singh Mithu
- Department of Chemistry, Guru Nanak Dev University, Amritsar 143005, India.,Department of NMR Based Structural Biology, Max Planck Institute for Biophysical Chemistry, 37077 Göttingen, Germany
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Keppeler N, Galgano PD, da Silva Santos S, Malek NI, El Seoud OA. On the effects of head-group volume on the adsorption and aggregation of 1-(n-hexadecyl)-3-Cm-imidazolium bromide and chloride surfactants in aqueous solutions. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.115478] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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El Seoud OA, Keppeler N, Malek NI, Galgano PD. Ionic Liquid-Based Surfactants: Recent Advances in Their Syntheses, Solution Properties, and Applications. Polymers (Basel) 2021; 13:1100. [PMID: 33808369 PMCID: PMC8036849 DOI: 10.3390/polym13071100] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 03/19/2021] [Accepted: 03/22/2021] [Indexed: 11/16/2022] Open
Abstract
The impetus for the expanding interest in ionic liquids (ILs) is their favorable properties and important applications. Ionic liquid-based surfactants (ILBSs) carry long-chain hydrophobic tails. Two or more molecules of ILBSs can be joined by covalent bonds leading, e.g., to gemini compounds (GILBSs). This review article focuses on aspects of the chemistry and applications of ILBSs and GILBSs, especially in the last ten years. Data on their adsorption at the interface and micelle formation are relevant for the applications of these surfactants. Therefore, we collected data for 152 ILBSs and 11 biamphiphilic compounds. The head ions of ILBSs are usually heterocyclic (imidazolium, pyridinium, pyrrolidinium, etc.). Most of these head-ions are also present in the reported 53 GILBSs. Where possible, we correlate the adsorption/micellar properties of the surfactants with their molecular structures, in particular, the number of carbon atoms present in the hydrocarbon "tail". The use of ILBSs as templates for the fabrication of mesoporous nanoparticles enables better control of particle porosity and size, hence increasing their usefulness. ILs and ILBSs form thermodynamically stable water/oil and oil/water microemulsions. These were employed as templates for (radical) polymerization reactions, where the monomer is the "oil" component. The formed polymer nanoparticles can be further stabilized against aggregation by using a functionalized ILBS that is co-polymerized with the monomers. In addition to updating the literature on the subject, we hope that this review highlights the versatility and hence the potential applications of these classes of surfactants in several fields, including synthesis, catalysis, polymers, decontamination, and drug delivery.
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Affiliation(s)
- Omar A. El Seoud
- Institute of Chemistry, The University of São Paulo, São Paulo 05508-000, Brazil; (N.K.); (P.D.G.)
| | - Nicolas Keppeler
- Institute of Chemistry, The University of São Paulo, São Paulo 05508-000, Brazil; (N.K.); (P.D.G.)
| | - Naved I. Malek
- Applied Chemistry Department, Sardar Vallabhbhai National Institute of Technology, Surat 395 007, Gujarat, India;
| | - Paula D. Galgano
- Institute of Chemistry, The University of São Paulo, São Paulo 05508-000, Brazil; (N.K.); (P.D.G.)
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Thoppil AA, Chennuri BK, Gardas RL. Thermodynamics and micellization behavior of ethanolammonium carboxylate surface active ionic liquids in aqueous media. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2019.112116] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Kaur M, Singh G, Kaur A, Sharma PK, Kang TS. Thermally Stable Ionic Liquid-Based Microemulsions for High-Temperature Stabilization of Lysozyme at Nanointerfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:4085-4093. [PMID: 30810316 DOI: 10.1021/acs.langmuir.9b00106] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The development of new strategies for thermal stability and storage of enzymes is very important, considering the nonretention of catalytic activity by enzymes under harsh conditions of temperature. Following this, herein, a new approach based on the interfacial adsorption of lysozyme (LYZ) at nanointerfaces of ionic liquid (IL)-based microemulsions, for enhanced thermal stability of LYZ, is reported. Microemulsions (MEs) composed of dialkyl imidazolium-based surface active ILs (SAILs) as surfactants, ILs as the nonpolar phase, and ethylene glycol (EG) as the polar phase, without any cosurfactants, have been prepared and characterized in detail. Various regions corresponding to polar-in-IL, bicontinuous, and IL-in-polar phases have been characterized using conductivity measurements. Dynamic light scattering (DLS) measurements have provided insights into the size distribution of microdroplets, whereas temperature-dependent DLS measurements established the thermal stability of the MEs. Nanointerfaces formed by SAILs with EG in thermally stable reverse MEs act as fluid scaffolds to adsorb and provide thermal stability, up to 120 °C, to LYZ. Thermally treated LYZ upon extraction into a buffer shows enzyme activity owing to negligible change in the active site of LYZ, as marked by retention of microenvironment of Trp residues present in the active site of LYZ. The present work is expected to establish a new platform for the development of novel nanointerfaces utilizing biobased components for other biomedical applications.
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Affiliation(s)
- Manvir Kaur
- Department of Chemistry, UGC Sponsored Centre for Advanced Studies-II , Guru Nanak Dev University , Amritsar 143005 , India
| | - Gurbir Singh
- Department of Chemistry, UGC Sponsored Centre for Advanced Studies-II , Guru Nanak Dev University , Amritsar 143005 , India
| | - Anupreet Kaur
- Department of Chemistry, UGC Sponsored Centre for Advanced Studies-II , Guru Nanak Dev University , Amritsar 143005 , India
| | - Pushpender Kumar Sharma
- Department of Biotechnology , Sri Guru Granth Sahib World University , Fatehgarh Sahib 140406 , India
| | - Tejwant Singh Kang
- Department of Chemistry, UGC Sponsored Centre for Advanced Studies-II , Guru Nanak Dev University , Amritsar 143005 , India
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Singh G, Singh G, Kang TS. Colloidal systems of surface active ionic liquids and sodium carboxymethyl cellulose: physicochemical investigations and preparation of magnetic nano-composites. Phys Chem Chem Phys 2018; 20:18528-18538. [DOI: 10.1039/c8cp02841a] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Carboxymethyl cellulose-surface active ionic liquid colloidal formulations for preparation of magnetic nano-composites.
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Affiliation(s)
- Gagandeep Singh
- Department of Chemistry
- UGC-Centre for Advance Studies – II
- Guru Nanak Dev University
- Amritsar
- India
| | - Gurbir Singh
- Department of Chemistry
- UGC-Centre for Advance Studies – II
- Guru Nanak Dev University
- Amritsar
- India
| | - Tejwant Singh Kang
- Department of Chemistry
- UGC-Centre for Advance Studies – II
- Guru Nanak Dev University
- Amritsar
- India
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Singh G, Singh G, Kang TS. Effect of alkyl chain functionalization of ionic liquid surfactants on the complexation and self-assembling behavior of polyampholyte gelatin in aqueous medium. Phys Chem Chem Phys 2016; 18:25993-26009. [DOI: 10.1039/c6cp04664a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The interactional behavior of ILSs towards gelatin forming structurally different ILS mediated self-assemblies depending on the nature of the ILS and counterion binding is shown.
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Affiliation(s)
- Gagandeep Singh
- Department of Chemistry
- UGC-Centre for Advance Studies–II
- Guru Nanak Dev University
- Amritsar
- India
| | - Gurbir Singh
- Department of Chemistry
- UGC-Centre for Advance Studies–II
- Guru Nanak Dev University
- Amritsar
- India
| | - Tejwant Singh Kang
- Department of Chemistry
- UGC-Centre for Advance Studies–II
- Guru Nanak Dev University
- Amritsar
- India
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