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Yaqoob T, Shaukat S, Alonaizan R, Ullah R, Khan I, Nazar MF, Abd Ur Rahman HM. Solubilization of Reactive Red 2 in the Mixed Micelles of Cetylpyridinium Chloride and TX-114. Molecules 2023; 28:molecules28093952. [PMID: 37175362 PMCID: PMC10180315 DOI: 10.3390/molecules28093952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 05/01/2023] [Accepted: 05/03/2023] [Indexed: 05/15/2023] Open
Abstract
Owing to their surface active properties, surfactants have numerous applications in different fields of life. In the present research work, the solubilization of reactive red 2 (RR2) has been studied in single and mixed micellar systems (MMS) using UV-visible spectroscopy and electrical conductivity measurements. The interaction of RR2 with ionic micelles of cetylpyridinium chloride (CPC) was investigated. In order to probe the interaction of RR2 in MMS, mixtures of CPC and TX-114 (Triton X-114, a nonionic surfactant) were used. UV-visible spectroscopy has been used to obtain the degree of solubilization of RR2 in terms of the partition coefficient (Kc) and Gibbs free energy of partitioning (ΔG°p). Electrical conductivity data have been employed to detect the critical micelle concentration (CMC) of the surfactant systems in the presence of RR2 and, accordingly, to calculate the thermodynamic parameters of the micellization. From the obtained data, it is concluded that the micellization is spontaneous at all studied temperatures. Moreover, the micellization was observed to be driven by both enthalpy and entropy. The results also indicated that MMS have better solubilizing power than single micellar solutions.
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Affiliation(s)
- Tayyba Yaqoob
- Department of Chemistry, Government College Women University Sialkot, Sialkot 51310, Pakistan
| | - Saadia Shaukat
- Department of Chemistry, Government College Women University Sialkot, Sialkot 51310, Pakistan
| | - Rasha Alonaizan
- Zoology Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Ramzan Ullah
- Department of Physics, Rawalpindi Women University, Rawalpindi 46300, Pakistan
| | - Imran Khan
- Acoustophoreticn Single Embryo Characterization Laboratory (ASECL), Department of Biomedical Engineering, School of Medicine, Keimyung University, 1095 Dalgubeol-daero, Dalseo-gu, Daegu 42601, Republic of Korea
| | - Muhammad Faizan Nazar
- Department of Chemistry, University of Education Lahore, Multan Campus, Lahore 60700, Pakistan
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Basque J, Lavoie J, Reynier N, Larivière D. Quantitative Separation of Thorium from Rare Earth Elements and Uranium in a Rare Earth Element Sulfuric Acid Leachate Using Cloud Point Extraction. Microchem J 2023. [DOI: 10.1016/j.microc.2023.108724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
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Wang X, Liu Y, Wu T, Gu B, Sun H, He H, Gong H, Zhu H. A win-win scenario for antibacterial activity and skin mildness of cationic surfactants based on the modulation of host-guest supramolecular conformation. Bioorg Chem 2023; 134:106448. [PMID: 36868128 DOI: 10.1016/j.bioorg.2023.106448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 02/12/2023] [Accepted: 02/24/2023] [Indexed: 03/03/2023]
Abstract
The commercial cationic surfactants (CSAa) with quaternary ammonium (QA) groups have proved to be broad-spectrum bactericide against bacteria, fungi, and viruses. Nevertheless, they inevitably exhibit potent irritation on the skin. In this work, we systematically investigated the regulatory mechanism of the host-guest supramolecular conformation with β-cyclodextrin (β-CD) on the bactericidal performance and skin irritation of CSAa with different head groups and chain lengths. When the ratio of incorporated β-CD is not greater than 1:1, the bactericidal efficiency of CSAa@β-CD (n > 12) remained above 90 % due to the free QA groups and hydrophobic fraction that can act on negatively charged bacterial membranes. And once the ratio of β-CD exceeded 1:1, the β-CD attracted to the bacterial surface by hydrogen bonding might prevent CSAa@β-CD from acting on bacteria, resulting in a decrement in antibacterial performance. Even so, the antibacterial activity of CSAa with long alkyl chains (n = 16, 18) was independent from the complexation of β-CD. Accordingly, both the zein solubilization assay and the neutrophil migration assay on zebrafish skin evidenced that β-CD attenuated the interaction of surfactant with skin model proteins and the inflammatory effect on zebrafish, thereby enhancing skin mildness. In this way, we hope to create a simple but effective brainpower using the host-guest approach to guarantee both bactericidal efficiency and skin mildness without modifying the chemical structure of these commercial biocides.
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Affiliation(s)
- Xuejiao Wang
- Fujian-Taiwan Science and Technology Cooperation Base of Biomedical Materials and Tissue Engineering, Engineering Research Center of Industrial Biocatalysis, Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, PR China.
| | - Yuting Liu
- Fujian-Taiwan Science and Technology Cooperation Base of Biomedical Materials and Tissue Engineering, Engineering Research Center of Industrial Biocatalysis, Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, PR China
| | - Tongyue Wu
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, PR China
| | - Biaofeng Gu
- Fujian-Taiwan Science and Technology Cooperation Base of Biomedical Materials and Tissue Engineering, Engineering Research Center of Industrial Biocatalysis, Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, PR China
| | - Hao Sun
- Fujian-Taiwan Science and Technology Cooperation Base of Biomedical Materials and Tissue Engineering, Engineering Research Center of Industrial Biocatalysis, Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, PR China
| | - Huanling He
- Fujian-Taiwan Science and Technology Cooperation Base of Biomedical Materials and Tissue Engineering, Engineering Research Center of Industrial Biocatalysis, Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, PR China
| | - Haiqin Gong
- Fujian-Taiwan Science and Technology Cooperation Base of Biomedical Materials and Tissue Engineering, Engineering Research Center of Industrial Biocatalysis, Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, PR China
| | - Hu Zhu
- Fujian-Taiwan Science and Technology Cooperation Base of Biomedical Materials and Tissue Engineering, Engineering Research Center of Industrial Biocatalysis, Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, PR China.
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Yusaf A, Usman M, Ibrahim M, Mansha A, Haq AU, Rehman HF, Ali M. Mixed micellar solubilization for procion blue MxR entrapment and optimization of necessary parameters for micellar enhanced ultrafiltration. Chemosphere 2023; 313:137320. [PMID: 36410522 DOI: 10.1016/j.chemosphere.2022.137320] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 10/23/2022] [Accepted: 11/17/2022] [Indexed: 06/16/2023]
Abstract
In this study, micellar enhanced ultrafiltration, MEUF, being an active methodology, has been employed to remove Procion Blue MxR (PBM) from synthetic effluent. MEUF is being applied to reduce the toxicity level of aqueous system using the micellar media of cationic surfactants i.e. Cetyl trimethylammonium bromide (CTAB) and cetylpyridinium chloride (CPC). Subsequently, the effect of addition of nonionic surfactant, Triton X-100 (TX-100), on solubilizing power of cationic surfactants is investigated. The values of partition coefficient and free energy of partition reflect the extent of interaction of the dye with the surfactants. Initially molecules of pollutants i.e. dye form ion pairs with ionic surfactants and, later on, the same is incorporated within micelle. Maximum value of free energy of partition ΔGp has been found to be -55.49 kJmol-1 and -50.43 kJmol in the presence of CPC and CTAB, respectively. The size of pollutant, thus, increases and, consequently, can be easily filtered. The effect of various factors i.e. concentration of surfactant, concentration of electrolyte (NaCl), transmembrane pressure, revolutions per minute (RPM) and pH, have been investigated to find the optimum conditions for maximum removal of PBM from aqueous system. The efficiency of MEUF has been assessed by calculating the values of rejection percentage and permeate flux. Both the surfactants were observed as strong candidates for PBM encapsulation but overall, maximum rejection percentage (R%) of 96.90% was attained by CPC.
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Affiliation(s)
- Amnah Yusaf
- Department of Chemistry, Government College University, Faisalabad (38000), Pakistan; Department of Chemistry, University College London, England, UK; Department of Chemistry, Government College Women University, Faisalabad (38000), Pakistan
| | - Muhammad Usman
- Department of Chemistry, Government College University, Faisalabad (38000), Pakistan.
| | - Muhammad Ibrahim
- Department of Environmental Sciences, Government College University, Faisalabad (38000), Pakistan.
| | - Asim Mansha
- Department of Chemistry, Government College University, Faisalabad (38000), Pakistan
| | - Atta Ul Haq
- Department of Chemistry, Government College University, Faisalabad (38000), Pakistan
| | - Hafiza Fatima Rehman
- Department of Zoology, Government College University Faisalabad (38000), Pakistan
| | - Majid Ali
- Riphah International University, Faisalabad Campus, Faisalabad, Pakistan
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5
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Fizer O, Fizer M, Filep M, Sidey V, Mariychuk R. On the structure of cetylpyridinium perchlorate: A combined XRD, NMR, IR and DFT study. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Kashapov RR, Mirgorodskaya AB, Kuznetsov DM, Razuvaeva YS, Zakharova LY. Nanosized Supramolecular Systems: From Colloidal Surfactants to Amphiphilic Macrocycles and Superamphiphiles. Colloid J 2022. [DOI: 10.1134/s1061933x22700016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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7
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Bukhtawar F, Usman M, Akram N, Haq AU, Ahmad Z, Raza S, Younis S, Nazar MF. Enhanced solubilization of reactive dyes using mixed micellar media: insights from spectral and conductometric measurements. Colloid Polym Sci 2022. [DOI: 10.1007/s00396-022-05021-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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8
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Vasileva LA, Eyupova RF, Valeeva FG, Gaynanova GA, Zakharova LY. Mixed micellar systems — efficient nanocontainers for the delivery of hydrophobic substrates. Russ Chem Bull 2022; 71:1897-1906. [DOI: 10.1007/s11172-022-3607-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Movchan TG, Rusanov AI, Plotnikova EV. Reverse Micelles and Protomicelles of Tetraethylene Glycol Monododecyl Ether in Systems with Heptane and Nile Red. RUSS J GEN CHEM+ 2022. [DOI: 10.1134/s1070363222040065] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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10
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Hu K, Ouyang M, Jiang Q, Zhang H, Kong M, Wang G, Zhuang L. Experimental and DFT studies on micellization features of anionic surface active ionic liquid and nonionic surfactant mixtures: Effect of imidazolium cations. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.132284] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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11
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Smith OEP, Waters LJ, Small W, Mellor S. CMC determination using isothermal titration calorimetry for five industrially significant non-ionic surfactants. Colloids Surf B Biointerfaces 2022; 211:112320. [PMID: 35042120 DOI: 10.1016/j.colsurfb.2022.112320] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 01/04/2022] [Accepted: 01/05/2022] [Indexed: 11/20/2022]
Abstract
Surfactants are used in a vast array of products including pharmaceuticals, cosmetics and household formulations. From an industrial perspective, non-ionic surfactants are ideal for inclusion within such products as they are non-toxic, simple to formulate and economic to use. This study considers five non-ionic surfactants (Tween 20, Tween 80, Crodasol, Croduret and Etocas 35) to determine the critical micellar concentration (CMC) for each using isothermal titration calorimetry, thus avoiding issues regarding poor accuracy found with other techniques. Furthermore, this methodology has not previously been applied to this group of surfactants. For the most commonly used non-ionics (Tween 20 and Tween 80) a further study was undertaken to consider the influence of surfactant purity on the CMC determined, using standard grade (Tween 20 and 80), high purity (Tween 20 HP and Tween 80 HP) and Super Refined (SR PS20 and SR PS80). Results permitted calculation of the CMC for the surfactants whereupon the values were determined to range from 1.0 mM for Tween 20 HP to 2.9 mM for Tween 80 HP. Such information regarding the CMC event is useful from a formulation perspective as it can ensure that the most optimum concentration of surfactant is included within a formulation to maximize its efficacy.
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Ali M, Usman M, Shah A, Rehman A. Encapsulation of ethyl violet by anionic-cationic mixed micellar solution: Spectroscopic and conductometric studies. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127423] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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13
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Irshad S, Sultana H, Usman M, Akram N, Farooqi ZH, Yusaf A, Nazar MF. Solubilization of direct black 2 in mixed micellar media: insights from spectroscopic and conductometric measurements. J DISPER SCI TECHNOL 2021. [DOI: 10.1080/01932691.2021.1993890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Saira Irshad
- Department of Chemistry, Government College University, Faisalabad, Pakistan
| | - Hamadia Sultana
- Department of Chemistry, Government College University, Faisalabad, Pakistan
| | - Muhammad Usman
- Department of Chemistry, Government College University, Faisalabad, Pakistan
| | - Nadia Akram
- Department of Chemistry, Government College University, Faisalabad, Pakistan
| | - Zahoor H. Farooqi
- School of Chemistry, University of the Punjab, New Campus, Lahore, Pakistan
| | - Amnah Yusaf
- Department of Chemistry, Government College University, Faisalabad, Pakistan
| | - Muhammad Faizan Nazar
- Department of Chemistry, University of Education Lahore, Multan Campus, Lahore, Pakistan
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Zhou Y, Jin Y, Shen Y, Shi L, Lai S, Tang Y. Strong synergistic effect of cationic hydrocarbon surfactant and novel nonionic tri-block short-chain fluorocarbon surfactant mixtures on surface activity, wettability and solubilization. J Leather Sci Eng 2021. [DOI: 10.1186/s42825-021-00064-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Abstract
Mixing hydrocarbon surfactants with fluorocarbon surfactants is still an important strategy to improve the economic benefits and performances of fluorocarbon surfactants and expand their range of application. Herein, we prepared a novel kind of hydrocarbon-fluorocarbon surfactant mixtures via mixing a cationic surfactant, cetyltrimethylammonium bromide (CTAB), with a tri-block nonionic short-chain fluorocarbon surfactant (F9EG13F9) in aqueous solution. The results showed that adding a small CTAB amount to F9EG13F9 (the molar fraction of CTAB in the mixture (x1) was 0.2) could greatly reduce its critical micelle concentrations (cmc) from 0.408 mmol/L to 0.191 mmol/L. At this x1, the contact angle of the mixture was the minimum (57.7 °) at 100 s on polytetrafluoroethylene film, which was even lower than that of F9EG13F9. Besides, CTAB/F9EG13F9 mixtures possessed better colloidal stability and solubilization ability toward hydrophobic dye (Sudan І) than F9EG13F9. The outstanding performances of binary surfactant mixtures benefited from the non-ideal mixing and strong synergistic effect evidence that CTAB/F9EG13F9 surfactant mixtures could be used in practical applications instead of individual F9EG13F9, thereby reducing the used cost of F9EG13F9.
Graphical abstract
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15
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Taj MB, Noor S, Javed T, Ihsan A, Sarwari G, Jabeen S, Sharif T, Naseem Z, Naz I, Iqbal H, Ghani N. Effect of nonionic surfactant on micellization thermodynamics and spectroscopic profile of dye-surfactant aggregation. J DISPER SCI TECHNOL 2021. [DOI: 10.1080/01932691.2021.1960169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Muhammad Babar Taj
- Institute of Chemistry, Islamia University Bahawalpur, Bahawalpur, Pakistan
| | - Sadia Noor
- Department of Chemistry, University of Agriculture Faisalabad, Faisalabad, Pakistan
| | - Tariq Javed
- Department of Chemistry, University of Sahiwal, Sahiwal, Pakistan
| | - Anaum Ihsan
- Department of Chemistry, University of Agriculture Faisalabad, Faisalabad, Pakistan
| | - Ghulam Sarwari
- Department of Chemistry, University of Agriculture Faisalabad, Faisalabad, Pakistan
| | - Sobia Jabeen
- Department of Chemistry, University of Agriculture Faisalabad, Faisalabad, Pakistan
| | - Tehmina Sharif
- Department of Chemistry, University of Agriculture Faisalabad, Faisalabad, Pakistan
| | - Zubera Naseem
- Department of Chemistry, University of Agriculture Faisalabad, Faisalabad, Pakistan
| | - Iram Naz
- Department of Chemistry, Govt. College Women University Faisalabad, Faisalabad, Pakistan
| | - Humaira Iqbal
- Department of Chemistry, University of Agriculture Faisalabad, Faisalabad, Pakistan
| | - Naila Ghani
- Department of Chemistry, University of Agriculture Faisalabad, Faisalabad, Pakistan
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Vasileva LA, Kuznetsova DA, Valeeva FG, Vasilieva EA, Lukashenko SS, Gaynanova GA, Zakharova LY. Micellar nanocontainers based on cationic surfactants with a pyrrolidinium head group for increasing drug bioavailability. Russ Chem Bull 2021; 70:1341-8. [DOI: 10.1007/s11172-021-3221-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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17
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Gautam RK, Jaiswal N, Singh AK, Tiwari I. Ultrasound-enhanced remediation of toxic dyes from wastewater by activated carbon-doped magnetic nanocomposites: analysis of real wastewater samples and surfactant effect. Environ Sci Pollut Res Int 2021; 28:36680-36694. [PMID: 33704640 DOI: 10.1007/s11356-021-13256-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 03/01/2021] [Indexed: 06/12/2023]
Abstract
Water pollution has become a worldwide threat as the natural water resources are shrinking day by day. Emergent actions are needed to conserve water stocks to fulfill the sustainable development goals. Herein, we have prepared activated carbon-doped magnetic nanocomposites (AC@CoFe2O4) with environment friendly approach and characterized for FTIR, XRD, SEM, EDS, BET surface area, and pHzpc. AC@CoFe2O4 nanocomposite was applied for the decolorization of toxic food dyes (rhodamine B and tartrazine) from wastewater. Effect of ultrasonic waves, pH, contact time, surfactants, temperature, and analysis of real wastewater systems were studied. Adsorption isotherm, kinetics, and thermodynamics of the experiment were calculated for the present removal process. The effect of ultrasonication shows that the maximum removal percentage for RhB was found to be 92% and for tartrazine, it was found to be 86% at 60 min. Ultrasound-assisted adsorption and degradation revealed good results because of the formation of highly active ·H and ·OH radicals in the liquid through the decomposition of water molecules by the formation of hot spots under ultrasonic waves. Highest decolorization of 69% was obtained for RhB with anionic surfactant SDS and climax decolorization of tartrazine was acquired in case of CTAB as 60.5%. Analysis of real wastewater samples shows that the decolorization of RhB was found to be ~ 91% from well-water and ~ 95% removal of tartrazine was observed from submersible water on AC@CoFe2O4 nanocomposites. The decolorization best fitted (R2 < 0.988) with Langmuir model and value of Langmuir climax decolorization efficiency (Q0) was found to be 142.68 and 435.72 mg/g for RhB and tartrazine, respectively. Kinetic analysis revealed that adsorption follows pseudo-second-order equation. The dye-loaded AC@CoFe2O4 nanocomposites were recycled by 0.1 M HCl or NaOH and regenerated AC@CoFe2O4 nanocomposites were used up to five rounds with better adsorption efficiency.
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Affiliation(s)
- Ravindra Kumar Gautam
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, 211005, India
| | - Nandita Jaiswal
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, 211005, India
| | - Ankit Kumar Singh
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, 211005, India
| | - Ida Tiwari
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, 211005, India.
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Fizer M, Fizer O. Theoretical study on charge distribution in cetylpyridinium cationic surfactant. J Mol Model 2021; 27:203. [PMID: 34132886 DOI: 10.1007/s00894-021-04820-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Accepted: 06/09/2021] [Indexed: 01/18/2023]
Abstract
Here, we report the electrostatic potential maxima and partial atomic charges evaluated on cetylpyridinium cation. The Hartree-Fock method and six DFT functionals (namely, PBE, TPSS, B3LYP, PBE0, M06, and wB97) were used to calculate partial atomic charges via CHELPG, Mulliken, Löwdin, Hirshfeld, and natural population schemes. Calculations were performed for the gas phase and for the CPCM water solvated cation, resulting in a set of 70 types of partial atomic charges. The main tendencies in charge deviations were discussed. In comparison with the electrostatic potential-based CHELPG partial charges, Hirshfeld, Mulliken, Löwdin, and NPA partitioning schema lead to an almost steady decrease in the partial charges in the cetyl chain. This agreed closely with the redistribution of electrostatic potential mapped onto the 0.002 e/Bohr3 isodensity surface.
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Affiliation(s)
- Maksym Fizer
- Department of Organic Chemistry, Faculty of Chemistry, Uzhhorod National University, Fedinets', Str. 53/1, Uzhhorod, 88000, Ukraine.
| | - Oksana Fizer
- Department of Organic Chemistry, Faculty of Chemistry, Uzhhorod National University, Fedinets', Str. 53/1, Uzhhorod, 88000, Ukraine
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Irshad S, Sultana H, Usman M, Saeed M, Akram N, Yusaf A, Rehman A. Solubilization of direct dyes in single and mixed surfactant system: A comparative study. J Mol Liq 2021; 321:114201. [DOI: 10.1016/j.molliq.2020.114201] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Liu Q, Chen Z, Yang Y. Study of the Air-Entraining Behavior Based on the Interactions between Cement Particles and Selected Cationic, Anionic and Nonionic Surfactants. Materials (Basel) 2020; 13:E3514. [PMID: 32784881 PMCID: PMC7475877 DOI: 10.3390/ma13163514] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 08/01/2020] [Accepted: 08/07/2020] [Indexed: 11/26/2022]
Abstract
The essential role of the air void size distribution in air-entrained cementitious materials is widely accepted. However, how the air-entraining behavior is affected by features such as the molecular structure of air-entraining agents (AEAs), the type of solid particles, or the chemical environment of the pore solution in fresh mortars is still not well understood. Besides, methods to assess the interaction between AEAs and cement particles are limited. Thus, in this study, the air-entraining behaviors of three kinds of surfactant (cationic, anionic, and nonionic) were examined. The general working mechanisms of these surfactants were studied by zeta potential and attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy. Results indicate that the cationic surfactant entrains improper coarse air voids due to the strong electrical interaction between air bubbles formed by the cationic surfactant and negatively charged cement particles. The anionic surfactant interacts with the positively charged part of cement particles, and thus entrains finer air voids. The interaction between the nonionic surfactant and cement particles is very weak; as a result, the nonionic surfactant entrains the finest and homogeneous air voids.
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Affiliation(s)
- Qi Liu
- School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China; (Q.L.); (Z.C.)
- Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology, Harbin 150090, China
- Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology, Harbin Institute of Technology, Harbin 150090, China
| | - Zhitao Chen
- School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China; (Q.L.); (Z.C.)
- Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology, Harbin 150090, China
- Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology, Harbin Institute of Technology, Harbin 150090, China
| | - Yingzi Yang
- School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China; (Q.L.); (Z.C.)
- Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology, Harbin 150090, China
- Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology, Harbin Institute of Technology, Harbin 150090, China
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