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Ye M, Zhang H, Wu Z, Ding C, Jin Z, Wang F, Bian H. Supercritical carbon dioxide microemulsion stabilized with zwitterionic surfactant: A dissipative particle dynamics simulation study. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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2
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Wu J, Deng BY, Liu J, Yang SR, Li MD, Li J, Wang F. Assembling CdSe Quantum Dots into Polymeric Micelles Formed by a Polyethylenimine-Based Amphiphilic Polymer to Enhance Efficiency and Selectivity of CO 2-to-CO Photoreduction in Water. ACS APPLIED MATERIALS & INTERFACES 2022; 14:29945-29955. [PMID: 35749254 DOI: 10.1021/acsami.2c07656] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Colloidal quantum dots (QDs) as photocatalysts enable catalysis of CO2-to-CO conversion in the presence of electron donors. The surface and/or interfacial chemical environment of the QDs is essential for the activity and selectivity of the CO2 photoreduction. Various strategies, including exposing active metal sites or anchoring functional organic ligands, have been applied to tune the QDs' surface chemical environment and thus to improve both activity and selectivity of CO2 photoreduction, which occurs at surface of the QDs. However, the efficient and selective photocatalytic CO2 reduction with QD photocatalysts in water is still a challenging task due to low CO2 solubility and robust competing reaction of proton reduction in water. Different from state-of-the-art QDs' surface manipulation, we proposed to ameliorate the interfacial chemical environment of CdSe QDs via assembling the QDs into functional polymeric micelles in water. Herein, CdSe@PEI-LA assemblies were constructed by loading CdSe QDs into polymeric micelles formed by PEI-LA, a polyethylenimine (PEI)-based functional amphiphilic polymer. Due to self-assembly and high CO2 adsorption capacity of PEI-LA in water, the photocatalytic CO2-to-CO conversion efficiency and selectivity of the CdSe@PEI-LA assemblies in water were dramatically improved to 28.0 mmol g-1 and 87.5%, respectively. These two values increased 57 times and 1.5 times, respectively, compared with those of the pristine CdSe QDs. Mechanism studies revealed that CdSe QDs locate in polymeric micelles of high CO2 local concentration and the photoinduced electron transfer from the conduction band of CdSe QDs to Cd-CO2* species is thermodynamically and kinetically improved in the presence of PEI-LA. The CdSe@PEI-LA system represents a successful example of using a functionalized amphiphilic polymer to ameliorate interfacial microenvironments of nanocrystal photocatalysts and realizing efficient and selective CO2 photoreduction in water.
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Affiliation(s)
- Jin Wu
- Key Laboratory of Materials Chemistry for Energy Conversion and Storage (Huazhong University of Science and Technology) of Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Bo-Yi Deng
- Key Laboratory of Materials Chemistry for Energy Conversion and Storage (Huazhong University of Science and Technology) of Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Jing Liu
- Key Laboratory of Materials Chemistry for Energy Conversion and Storage (Huazhong University of Science and Technology) of Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Si-Rui Yang
- Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Department of Chemistry, Chemistry and Chemical Engineering Guangdong Laboratory, Shantou University, Shantou 515031, P. R. China
| | - Ming-De Li
- Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Department of Chemistry, Chemistry and Chemical Engineering Guangdong Laboratory, Shantou University, Shantou 515031, P. R. China
| | - Jing Li
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Feng Wang
- Key Laboratory of Materials Chemistry for Energy Conversion and Storage (Huazhong University of Science and Technology) of Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
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Peng YY, Liao YF, Gan W, Tong QX, Yuan QH. Hydroxyl group modifies aggregation behavior of a non-ionic hydro-fluorocarbon hybrid surfactant by disrupting interfacial water. CHINESE J CHEM PHYS 2020. [DOI: 10.1063/1674-0068/cjcp2006092] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Ying-ying Peng
- Flexible Printed Electronics Technology Center, and School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
- Department of Chemistry, and Key Laboratory for Preparation and Application of Ordered Structural Material of Guangdong Province, Shantou University, Shantou 515063, China
| | - Yi-fan Liao
- Department of Chemistry, and Key Laboratory for Preparation and Application of Ordered Structural Material of Guangdong Province, Shantou University, Shantou 515063, China
| | - Wei Gan
- Flexible Printed Electronics Technology Center, and School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Qing-xiao Tong
- State Key Laboratory of Advanced Welding and Joining, and School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Qun-hui Yuan
- State Key Laboratory of Advanced Welding and Joining, and School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
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Cui J, Sandahl M, Wendt OF, Rodriguez‐Meizoso I. Extraction with Water‐in‐Carbon Dioxide Microemulsions: A Case Study on Steviol Glycosides. J SURFACTANTS DETERG 2019. [DOI: 10.1002/jsde.12325] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jingwen Cui
- Centre for Analysis and Synthesis, Department of ChemistryLund University P.O. Box 124, SE‐22100 Lund Sweden
| | - Margareta Sandahl
- Centre for Analysis and Synthesis, Department of ChemistryLund University P.O. Box 124, SE‐22100 Lund Sweden
| | - Ola F. Wendt
- Centre for Analysis and Synthesis, Department of ChemistryLund University P.O. Box 124, SE‐22100 Lund Sweden
| | - Irene Rodriguez‐Meizoso
- Centre for Analysis and Synthesis, Department of ChemistryLund University P.O. Box 124, SE‐22100 Lund Sweden
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Alzobaidi S, Da C, Tran V, Prodanović M, Johnston KP. High temperature ultralow water content carbon dioxide-in-water foam stabilized with viscoelastic zwitterionic surfactants. J Colloid Interface Sci 2017; 488:79-91. [DOI: 10.1016/j.jcis.2016.10.054] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Revised: 10/19/2016] [Accepted: 10/20/2016] [Indexed: 10/20/2022]
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6
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Synthesis of Siloxane Polyether Surfactants and Their Solubility in Supercritical CO2. J SURFACTANTS DETERG 2016. [DOI: 10.1007/s11743-016-1912-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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7
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Xue Z, Worthen AJ, Da C, Qajar A, Ketchum IR, Alzobaidi S, Huh C, Prodanović M, Johnston KP. Ultradry Carbon Dioxide-in-Water Foams with Viscoelastic Aqueous Phases. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:28-37. [PMID: 26666311 DOI: 10.1021/acs.langmuir.5b03036] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
For foams with ultra low water contents, the capillary pressure is very large and induces rapid drainage that destabilizes the aqueous lamellae between the gas bubbles. However, we show that high-pressure CO2-in-water foams can be stabilized with a viscoelastic aqueous phase composed of entangled wormlike micelles, even for extremely high CO2 volume fractions ϕ of 0.95 to 0.98; the viscosity of these ultradry foams increased by up to 3-4-fold, reaching more than 100 cP relative to foams formed with conventional low viscosity aqueous phases. The foam morphology consisted of fine ∼20 μm polyhedral-shaped CO2 bubbles that were stable for hours. The wormlike micelles were formed by mixing anionic sodium lauryl ether sulfate (SLES) with salt and a protonated cationic surfactant, as shown by cryogenic transmission electron microscopy (cryo-TEM) and large values of the zero-shear viscosity and the dynamic storage and loss moduli. With the highly viscous continuous aqueous phases, the foam lamella drainage rates were low, as corroborated by confocal microscopy. The preservation of viscous thick lamellae resulted in lower rates of Ostwald ripening relative to conventional foams as shown by high-pressure optical microscopy. The ability to stabilize viscous ultra high internal phase foams is expected to find utility in various practical applications, including nearly "waterless" fracturing fluids for recovery of oil and gas in shale, offering the possibility of a massive reduction in the amount of wastewater.
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Affiliation(s)
- Zheng Xue
- Department of Chemical Engineering and ‡Department of Petroleum and Geosystems Engineering, University of Texas at Austin , Austin, Texas 78712, United States
| | - Andrew J Worthen
- Department of Chemical Engineering and ‡Department of Petroleum and Geosystems Engineering, University of Texas at Austin , Austin, Texas 78712, United States
| | - Chang Da
- Department of Chemical Engineering and ‡Department of Petroleum and Geosystems Engineering, University of Texas at Austin , Austin, Texas 78712, United States
| | - Ali Qajar
- Department of Chemical Engineering and ‡Department of Petroleum and Geosystems Engineering, University of Texas at Austin , Austin, Texas 78712, United States
| | - Isaiah Robert Ketchum
- Department of Chemical Engineering and ‡Department of Petroleum and Geosystems Engineering, University of Texas at Austin , Austin, Texas 78712, United States
| | - Shehab Alzobaidi
- Department of Chemical Engineering and ‡Department of Petroleum and Geosystems Engineering, University of Texas at Austin , Austin, Texas 78712, United States
| | - Chun Huh
- Department of Chemical Engineering and ‡Department of Petroleum and Geosystems Engineering, University of Texas at Austin , Austin, Texas 78712, United States
| | - Maša Prodanović
- Department of Chemical Engineering and ‡Department of Petroleum and Geosystems Engineering, University of Texas at Austin , Austin, Texas 78712, United States
| | - Keith P Johnston
- Department of Chemical Engineering and ‡Department of Petroleum and Geosystems Engineering, University of Texas at Austin , Austin, Texas 78712, United States
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Hankel RF, Rojas PE, Cano-Sarabia M, Sala S, Veciana J, Braeuer A, Ventosa N. Surfactant-free CO2-based microemulsion-like systems. Chem Commun (Camb) 2014; 50:8215-8. [PMID: 24930775 DOI: 10.1039/c4cc01804d] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The presence of water-rich and water-lean nanodomains in a transparent, pressurized "water-acetone-CO2" mixture was revealed by Raman spectroscopy. This nano-structured liquid can be classified as a surfactant-free microemulsion-like system and has the capacity to dissolve hydrophobic compounds, such as ibuprofen, in the presence of large amounts of water. This finding opens new opportunities in the fields of confined reactions and material templating.
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Affiliation(s)
- Robert F Hankel
- Lehrstuhl für Technische Thermodynamik (LTT) and Erlangen Graduate School in Advanced Optical Technologies (SAOT) Friedrich-Alexander Universitaet Erlangen-Nuernberg, Paul-Gordan-Strasse 6, 91052 Erlangen, Germany.
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Performance of the Biocompatible Surfactant Tween 80, for the Formation of Microemulsions Suitable for New Pharmaceutical Processing. ACTA ACUST UNITED AC 2013. [DOI: 10.1155/2013/930356] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The aim of this work was to investigate the phase behaviour and the structure of the n-hexane/water emulsions based on a nonionic, nontoxic and biocompatible surfactant, Tween 80. This system is of interest for new pharmaceutical techniques based on supercritical fluids to form nano- and encapsulated particles. However, it showed a lack of stability denoted by large areas of macroemulsion. For this reason, the effect of additives (alcohols and brine) and external variables (temperature) were explored. The replacement of water by brine caused negligible impact due to the nonionic character of Tween 80. On the contrary, the presence of an alcohol (ethanol or 1-butanol) enhanced the solubility of the surfactant in the oil phase and decreased the mixture viscosity, resulting in improved surface activity. Similar results were obtained by raising the temperature until the cloud point was reached (60°C). With these modifications, microemulsions at relatively low concentrations of surfactant (around 30%) and within a broad interval of compositions could be obtained, widening their possible use in pharmaceuticals manufacturing (such as controlled drug delivery, enzymatic reactions, or excipient processing). The understanding of the surfactant performance could be further used to substitute the n-hexane by a greener solvent, such as supercritical CO2.
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Zhang J, Han B. Supercritical or compressed CO2 as a stimulus for tuning surfactant aggregations. Acc Chem Res 2013; 46:425-33. [PMID: 23106121 DOI: 10.1021/ar300194j] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Surfactant assemblies have a wide range of applications in areas such as the chemical industry, material science, biology, and enhanced oil recovery. From both theoretical and practical perspectives, researchers have focused on tuning the aggregation behaviors of surfactants. Researchers commonly use solid and liquid compounds such as cosurfactants, acids, salts, and alcohols as stimuli for tuning the aggregation behaviors. However, these additives can present economic and environmental costs and can contaminate or modify the product. Therefore researchers would like to develop effective methods for tuning surfactant aggregation with easily removable, economical, and environmentally benign stimuli. Supercritical or compressed CO(2) is abundant, nontoxic, and nonflammable and can be recycled easily after use. Compressed CO(2) is quite soluble in many liquids, and the solubility depends on pressure and temperature. Therefore researchers can continuously influence the properties of liquid solvents by controlling the pressure or temperature of CO(2). In this Account, we briefly review our recent studies on tuning the aggregation behaviors of surfactants in different media using supercritical or compressed CO(2). Supercritical or compressed CO(2) serves as a versatile regulator of a variety of properties of surfactant assemblies. Using CO(2), we can switch the micellization of surfactants in water, adjust the properties of reverse micelles, enhance the stability of vesicles, and modify the switching transition between different surfactant assemblies. We can also tune the properties of emulsions, induce the formation of nanoemulsions, and construct novel microemulsions. With these CO(2)-responsive surfactant assemblies, we have synthesized functional materials, optimized chemical reaction conditions, and enhanced extraction and separation efficiencies. Compared with the conventional solid or liquid additives, CO(2) shows some obvious advantages as an agent for modifying surfactant aggregation. We can adjust the aggregation behaviors continuously by pressure and can easily remove CO(2) without contaminating the product, and the method is environmentally benign. We can explain the mechanisms for these effects on surfactant aggregation in terms of molecular interactions. These studies expand the areas of colloid and interface science, supercritical fluid science and technology, and chemical thermodynamics. We hope that the work will influence other fundamental and applied research in these areas.
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Affiliation(s)
- Jianling Zhang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Colloid and Interface and Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Buxing Han
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Colloid and Interface and Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
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Yang F, Yu XH, Qiao F, Cheng LH, Chen G, Long X, Wang XR, Li XL, Liang RC, Chen YZ. Formulation and characterization of Brucea javanica oil microemulsion for improving safety. Drug Dev Ind Pharm 2013; 40:266-77. [PMID: 23356859 DOI: 10.3109/03639045.2012.756887] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVE This study engaged in investigation of optimal formulation, characteristics analysis of Brucea javanica oil microemulsion (BJOM) in order to address safety concerns and make recommendations for improvements in BJOM safety during clinical use in vivo. METHODS Pseudo-ternary phase diagram techniques were used to determine the appropriate ratio of surfactant, cosurfactant and oil phases. Subsequent stability testing of BJOM was performed by dilution, centrifugation and accelerated stability testing. The results were expounded through additional assessment utilizing the classical thermostat method to establish the shelf life of the material. These results were utilized to evaluate the safety of BJOM by haemolytic, irritative and allergic testing in vitro. In addition, the cytotoxicity of BJOM was examined using the tetrazolium salt 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT), with particular emphasis given to potential uses in cancer treatment. RESULTS The most suitable method of preparation for BJOM was found to be a one to one ratio (Km 1:1) of Solutol HS15 surfactant matched with sorbitol cosurfactant in the ratio. The microemulsion droplets of BJOM possessed a spherical shape, uniform size and average diameter of 23.8 nm. The expiration date of BJOM was found to be 568 d. The safety study demonstrated no hemolysis activity at the experimental BJOM concentrations; however, mild hemolysis was observed at higher concentrations of Brucea javanica oil emulsion (BJOE), a common commercially available product. Irritation observed upon BJOM treatment can be primarily attributed to Brucea javanica oil (BJO) with little influence of BJOM excipients. In addition, BJOM caused no observed hypersensitivity or other visible allergic reactions in guinea pigs. The anticancer activity curves of BJOM and BJOE demonstrate that both BJOM and BJOE inhibit Hela cells, with BJOM demonstrating significantly more dramatic anticancer activity. CONCLUSION An optimal formulation of BJOM superior to commercially available products and safe for medical application such as intravenous injection has been outlined along with its anticancer activity rating.
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Affiliation(s)
- Fan Yang
- Department of Pharmacy, Guangdong Pharmaceutical University , Guangzhou , People's Republic of China
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Peng L, Zhang J, Li J, Han B, Xue Z, Yang G. Macro- and Mesoporous Polymers Synthesized by a CO2-in-Ionic Liquid Emulsion-Templating Route. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201209255] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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13
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Peng L, Zhang J, Li J, Han B, Xue Z, Yang G. Macro- and Mesoporous Polymers Synthesized by a CO2-in-Ionic Liquid Emulsion-Templating Route. Angew Chem Int Ed Engl 2013; 52:1792-5. [DOI: 10.1002/anie.201209255] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2012] [Indexed: 01/03/2023]
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Ghosh K, Rankin SE, Lehmler HJ, Knutson BL. Processing of surfactant templated nano-structured silica films using compressed carbon dioxide as interpreted from in situ fluorescence spectroscopy. J Phys Chem B 2012; 116:11646-55. [PMID: 22946494 DOI: 10.1021/jp305113b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The local environment and dynamics of compressed carbon dioxide (CO(2)) penetration in surfactant templated silica film synthesis is interpreted from the in situ fluorescence emission spectra of pyrene (Py) and a modified pyrene probe. Pyrene emission in cetyltrimethylammonium bromide (CTAB) and cetylpyridinium bromide (CPB) templated silica films is monitored immediately after casting and during processing with gaseous and supercritical (sc) CO(2) (17-172 bar, 45 °C). The solvatochromic emission spectra of pyrene in CTAB templated films suggest CO(2) penetration in both the micelle interface and its interior. An anchored derivative of pyrene, 1-pyrenehexadecanoic acid (C(16)-pyr), is established for probing CPB films, where the pyrene moiety is preferentially oriented toward the micelle interior, thus limiting quenching by the pyridinium headgroup of CPB. CO(2) processing of CPB templated silica films results in an increase in the time scale for probe mobility, suggesting an increased time scale of silica condensation through CO(2) processing. The mobility of C(16)-pyr increases with pressure from gaseous to sc CO(2) processing and persists for over 5 h for sc CO(2) processing at 172 bar and 45 °C compared to about 25 min for the unprocessed film. The delivery of CO(2) soluble solutes to specific regions of surfactant templated mesoporous materials is examined via the nonradiative energy transfer (NRET) between pyrene and CO(2)-solubilized naphthalene.
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Affiliation(s)
- Kaustav Ghosh
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, Kentucky 40506-0046, USA
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Carbon Dioxide in Ionic Liquid Microemulsions. Angew Chem Int Ed Engl 2011; 50:9911-5. [DOI: 10.1002/anie.201103956] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2011] [Indexed: 12/15/2022]
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Zhang J, Han B, Li J, Zhao Y, Yang G. Carbon Dioxide in Ionic Liquid Microemulsions. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201103956] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Chang TFM, Tasaki T, Ishiyama C, Sone M. Defect-Free Nickel Micropillars Fabricated at a High Current Density by Application of a Supercritical Carbon Dioxide Emulsion. Ind Eng Chem Res 2011. [DOI: 10.1021/ie200469e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Tso-Fu Mark Chang
- Precision and Intelligence Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Toshikazu Tasaki
- Precision and Intelligence Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Chiemi Ishiyama
- Precision and Intelligence Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Masato Sone
- Precision and Intelligence Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
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Huang SN, Pascal TA, Goddard WA, Maiti PK, Lin ST. Absolute Entropy and Energy of Carbon Dioxide Using the Two-Phase Thermodynamic Model. J Chem Theory Comput 2011; 7:1893-901. [DOI: 10.1021/ct200211b] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Shao-Nung Huang
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Tod A. Pascal
- Materials and Process Simulation Center, Beckman Institute, California Institute of Technology, Pasadena, California 91125, United States
- Graduate School of EEWS (WCU), Korea Advanced Institute of Science and Technology, Daejeon 305-701, Republic of Korea
| | - William A. Goddard
- Materials and Process Simulation Center, Beckman Institute, California Institute of Technology, Pasadena, California 91125, United States
- Graduate School of EEWS (WCU), Korea Advanced Institute of Science and Technology, Daejeon 305-701, Republic of Korea
| | - Prabal K. Maiti
- Centre for Condensed Matter Theory, Department of Physics, Indian Institute of Science, Bangalore 560012, India
| | - Shiang-Tai Lin
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
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Klostermann M, Foster T, Schweins R, Lindner P, Glatter O, Strey R, Sottmann T. Microstructure of supercritical CO2-in-water microemulsions: a systematic contrast variation study. Phys Chem Chem Phys 2011; 13:20289-301. [DOI: 10.1039/c1cp22000d] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Chen X, Adkins SS, Nguyen QP, Sanders AW, Johnston KP. Interfacial tension and the behavior of microemulsions and macroemulsions of water and carbon dioxide with a branched hydrocarbon nonionic surfactant. J Supercrit Fluids 2010. [DOI: 10.1016/j.supflu.2010.08.019] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Chen K, Grant N, Liang L, Zhang H, Tan B. Synthesis of CO2-philic Xanthate−Oligo(vinyl acetate)-Based Hydrocarbon Surfactants by RAFT Polymerization and Their Applications on Preparation of Emulsion-Templated Materials. Macromolecules 2010. [DOI: 10.1021/ma101182f] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Keping Chen
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Neil Grant
- Department of Chemistry, University of Liverpool, L69 7ZD, Liverpool, U.K
| | - Liyun Liang
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Haifei Zhang
- Department of Chemistry, University of Liverpool, L69 7ZD, Liverpool, U.K
| | - Bien Tan
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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Chang TFM, Sone M, Shibata A, Ishiyama C, Higo Y. Bright nickel film deposited by supercritical carbon dioxide emulsion using additive-free Watts bath. Electrochim Acta 2010. [DOI: 10.1016/j.electacta.2010.06.037] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Adkins SS, Chen X, Nguyen QP, Sanders AW, Johnston KP. Effect of branching on the interfacial properties of nonionic hydrocarbon surfactants at the air–water and carbon dioxide–water interfaces. J Colloid Interface Sci 2010; 346:455-63. [DOI: 10.1016/j.jcis.2009.12.059] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2009] [Revised: 12/23/2009] [Accepted: 12/29/2009] [Indexed: 11/30/2022]
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Adkins SS, Chen X, Chan I, Torino E, Nguyen QP, Sanders AW, Johnston KP. Morphology and stability of CO2-in-water foams with nonionic hydrocarbon surfactants. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:5335-5348. [PMID: 20345107 DOI: 10.1021/la903663v] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The morphologies, stabilities, and viscosities of high-pressure carbon dioxide-in-water (C/W) foams (emulsions) formed with branched nonionic hydrocarbon surfactants were investigated by in situ optical microscopy and capillary rheology. Over two dozen hydrocarbon surfactants were shown to stabilize C/W foams with Sauter mean bubble diameters as low as 1 to 2 microm. Coalescence of the C/W foam bubbles was rare for bubbles larger than about 0.5 microm over a 60 h time frame, and Ostwald ripening became very slow. By better blocking of the CO(2) and water phases with branched and double-tailed surfactants, the interfacial tension decreases, the surface pressure increases, and the C/W foams become very stable. For branched surfactants with propylene oxide middle groups, the stabilities were markedly lower for air/water foams and decane-water emulsions. The greater stability of the C/W foams to coalescence may be attributed to a smaller capillary pressure, lower drainage rates, and a sufficient surface pressure and thus limiting surface elasticity, plus small film sizes, to hinder spatial and surface density fluctuations that lead to coalescence. Unexpectedly, the foams were stable even when the surfactant favored the CO(2) phase over the water phase, in violation of Bancroft's rule. This unusual behavior is influenced by the low drainage rate, which makes Marangoni stabilization of less consequence and the strong tendency of emerging holes in the lamella to close as a result of surfactant tail flocculation in CO(2). The high distribution coefficient toward CO(2) versus water is of significant practical interest for mobility control in CO(2) sequestration and enhanced oil recovery by foam formation.
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Affiliation(s)
- Stephanie S Adkins
- Department of Chemical Engineering, University of Texas, Austin, Texas 78712, USA
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Schwan M, Kramer LGA, Sottmann T, Strey R. Phase behaviour of propane- and scCO2-microemulsions and their prominent role for the recently proposed foaming procedure POSME (Principle of Supercritical Microemulsion Expansion). Phys Chem Chem Phys 2010; 12:6247-52. [DOI: 10.1039/b909764c] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Johnston KP, Rocha SRD. Colloids in supercritical fluids over the last 20 years and future directions. J Supercrit Fluids 2009. [DOI: 10.1016/j.supflu.2008.10.024] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Shimizu R, Nibe A, Sawada K, Enokida Y, Yamamoto I. Preparation of hydrophobic platinum catalysts using a water-in-CO2 microemulsion. J Supercrit Fluids 2008. [DOI: 10.1016/j.supflu.2007.07.024] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Keagy JA, Li Y, Green PF, Johnston KP, Weber F, Rhoad JT, Busch EL, Wolf PJ. CO2 promotes penetration and removal of aqueous hydrocarbon surfactant cleaning solutions and silylation in low-k dielectrics with 3nm pores. J Supercrit Fluids 2007. [DOI: 10.1016/j.supflu.2007.02.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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30
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Electrochemical polymerization of water-soluble and insoluble monomers in supercritical carbon dioxide-in-water emulsion. POLYMER 2007. [DOI: 10.1016/j.polymer.2007.03.043] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Wang JQ, Yue XD, Cai F, He LN. Solventless synthesis of cyclic carbonates from carbon dioxide and epoxides catalyzed by silica-supported ionic liquids under supercritical conditions. CATAL COMMUN 2007. [DOI: 10.1016/j.catcom.2006.05.049] [Citation(s) in RCA: 177] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Ghosh K, Vyas SM, Lehmler HJ, Rankin SE, Knutson BL. Tailoring Porous Silica Films through Supercritical Carbon Dioxide Processing of Fluorinated Surfactant Templates. J Phys Chem B 2006; 111:363-70. [PMID: 17214487 DOI: 10.1021/jp0656680] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The tailoring of porous silica thin films synthesized using perfluoroalkylpyridinium chloride surfactants as templating agents is achieved as a function of carbon dioxide processing conditions and surfactant tail length and branching. Well-ordered films with 2D hexagonal close-packed pore structure are obtained from sol-gel synthesis using the following cationic fluorinated surfactants as templates: 1-(3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluoro-octyl)pyridinium chloride (HFOPC), 1-(3,3,4,4,5,5,6,6,7,8,8,8-dodecafluoro-7-trifluoromethyl -octyl)pyridinium chloride (HFDoMePC), and 1-(3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-heptadecafluoro-decyl)pyridinium chloride (HFDePC). Processing the sol-gel film with CO2 (69-172 bar, 25 and 45 degrees C) immediately after coating results in significant increases in pore diameter relative to the unprocessed thin films (increasing from 20% to 80% depending on surfactant template and processing conditions). Pore expansion increases with CO2 processing pressure, surfactant tail length, and surfactant branching. The varying degree of CO2 induced expansion is attributed to the solvation of the "CO2-philic" fluorinated tail and is interpreted from interfacial behavior of HFOPC, HFDoMePC, and HFDePC at the CO2-water interface.
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Affiliation(s)
- Kaustav Ghosh
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, Kentucky 40506-0046, USA
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Timko MT, Smith KA, Danheiser RL, Steinfeld JI, Tester JW. Reaction rates in ultrasonic emulsions of dense carbon dioxide and water. AIChE J 2006. [DOI: 10.1002/aic.10688] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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36
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Hanrahan JP, Copley MP, Ziegler KJ, Spalding TR, Morris MA, Steytler DC, Heenan RK, Schweins R, Holmes JD. Pore size engineering in mesoporous silicas using supercritical CO2. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2005; 21:4163-4167. [PMID: 15835989 DOI: 10.1021/la0470636] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
In this paper we investigate the use of supercritical carbon dioxide (sc-CO(2)) for synthesizing calcined mesoporous silicas with tunable pore sizes, wall thickness, and d spacings. Small angle neutron scattering was used to probe the controlled swelling of the triblock copolymer surfactant templating agents, P123 (PEO(20)PPO(69)PEO(20)), P85 (PEO(26)PPO(39)PEO(26)), and F127 (PEO(106)PPO(70)PEO(106)), as a function of CO(2) pressure. The transition from the liquid crystal phase to the calcined mesoporous silicas, formed upon condensation and drying, was also studied in detail. Powder X-ray diffraction, transmission electron microscopy, and nitrogen adsorption techniques were used to establish pore diameters, silica wall widths, and the hexagonal packing of the pores within the calcined silicas. Using a direct templating method, the diameters of mesopores and the spacing between the pores could be tuned with a high level of precision. The swelling process was observed to have no detrimental effects on the quality of silica formed, a distinct advantage over conventional swelling techniques, and all of the silicas synthesized in this study were highly ordered over distances of at least 2000 A.
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Affiliation(s)
- John P Hanrahan
- Department of Chemistry, Material Section and Supercritical Fluid Centre, University College Cork, Cork, Ireland
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Dickson JL, Smith PG, Dhanuka VV, Srinivasan V, Stone MT, Rossky PJ, Behles JA, Keiper JS, Xu B, Johnson C, DeSimone JM, Johnston KP. Interfacial Properties of Fluorocarbon and Hydrocarbon Phosphate Surfactants at the Water−CO2 Interface. Ind Eng Chem Res 2005. [DOI: 10.1021/ie048999c] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jasper L. Dickson
- Departments of Chemical Engineering and Chemistry and Biochemistry, The University of Texas at Austin, Austin, Texas 78712, and Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599
| | - P. Griffin Smith
- Departments of Chemical Engineering and Chemistry and Biochemistry, The University of Texas at Austin, Austin, Texas 78712, and Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599
| | - Varun V. Dhanuka
- Departments of Chemical Engineering and Chemistry and Biochemistry, The University of Texas at Austin, Austin, Texas 78712, and Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599
| | - Vibha Srinivasan
- Departments of Chemical Engineering and Chemistry and Biochemistry, The University of Texas at Austin, Austin, Texas 78712, and Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599
| | - Matthew T. Stone
- Departments of Chemical Engineering and Chemistry and Biochemistry, The University of Texas at Austin, Austin, Texas 78712, and Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599
| | - Peter J. Rossky
- Departments of Chemical Engineering and Chemistry and Biochemistry, The University of Texas at Austin, Austin, Texas 78712, and Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599
| | - Jacqueline A. Behles
- Departments of Chemical Engineering and Chemistry and Biochemistry, The University of Texas at Austin, Austin, Texas 78712, and Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599
| | - Jason S. Keiper
- Departments of Chemical Engineering and Chemistry and Biochemistry, The University of Texas at Austin, Austin, Texas 78712, and Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599
| | - Bin Xu
- Departments of Chemical Engineering and Chemistry and Biochemistry, The University of Texas at Austin, Austin, Texas 78712, and Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599
| | - Charles Johnson
- Departments of Chemical Engineering and Chemistry and Biochemistry, The University of Texas at Austin, Austin, Texas 78712, and Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599
| | - Joseph M. DeSimone
- Departments of Chemical Engineering and Chemistry and Biochemistry, The University of Texas at Austin, Austin, Texas 78712, and Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599
| | - Keith P. Johnston
- Departments of Chemical Engineering and Chemistry and Biochemistry, The University of Texas at Austin, Austin, Texas 78712, and Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599
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Felling KW, Youngstrom CR, Lagow RJ. Synthesis of perfluorinated functionalized, branched ethers. J Fluor Chem 2004. [DOI: 10.1016/j.jfluchem.2003.12.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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39
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Solubility of oxygen, carbon dioxide and water in semifluorinated alkanes and in perfluorooctylbromide by molecular simulation. J Fluor Chem 2004. [DOI: 10.1016/j.jfluchem.2003.11.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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40
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Ryoo W, Webber SE, Johnston KP. Water-in-Carbon Dioxide Microemulsions with Methylated Branched Hydrocarbon Surfactants. Ind Eng Chem Res 2003. [DOI: 10.1021/ie0300427] [Citation(s) in RCA: 139] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Won Ryoo
- Departments of Chemical Engineering and Chemistry and Biochemistry, University of Texas at Austin, Austin, Texas 78712
| | - Stephen E. Webber
- Departments of Chemical Engineering and Chemistry and Biochemistry, University of Texas at Austin, Austin, Texas 78712
| | - Keith P. Johnston
- Departments of Chemical Engineering and Chemistry and Biochemistry, University of Texas at Austin, Austin, Texas 78712
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Vayssière P, Wipff G. Importance of counter-ions in alkali and alkaline-earth cation extraction by 18-crown-6: molecular dynamics studies at the water/sc-CO2interface. Phys Chem Chem Phys 2003. [DOI: 10.1039/b303058j] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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