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Xing X, Cheng W, Zhou S, Liu H, Wu Z. Recent advances in small-angle scattering techniques for MOF colloidal materials. Adv Colloid Interface Sci 2024; 329:103162. [PMID: 38761601 DOI: 10.1016/j.cis.2024.103162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Revised: 03/21/2024] [Accepted: 04/20/2024] [Indexed: 05/20/2024]
Abstract
This paper reviews the recent progress of small angle scattering (SAS) techniques, mainly including X-ray small angle scattering technique (SAXS) and neutron small angle scattering (SANS) technique, in the study of metal-organic framework (MOF) colloidal materials (CMOFs). First, we introduce the application research of SAXS technique in pristine MOFs materials, and review the studies on synthesis mechanism of MOF materials, the pore structures and fractal characteristics, as well as the spatial distribution and morphological evolution of foreign molecules in MOF composites and MOF-derived materials. Then, the applications of SANS technique in MOFs are summarized, with emphasis on SANS data processing method, structure modeling and quantitative structural information extraction. Finally, the characteristics and developments of SAS techniques are commented and prospected. It can be found that most studies on MOF materials with SAS techniques focus mainly on nanoporous structure characterization and the evolution of pore structures, or the spatial distribution of other foreign molecules loaded in MOFs. Indeed, SAS techniques take an irreplaceable role in revealing the structure and evolution of nanopores in CMOFs. We expect that this paper will help to understand the research status of SAS techniques on MOF materials and better to apply SAS techniques to conduct further research on MOF and related materials.
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Affiliation(s)
- Xueqing Xing
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Weidong Cheng
- College of Materials Science and Engineering, New Energy Storage Devices Research Laboratory, Qiqihar University, Qiqihar 161006, China
| | - Shuming Zhou
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Huanyan Liu
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China; College of Materials Science and Engineering, New Energy Storage Devices Research Laboratory, Qiqihar University, Qiqihar 161006, China
| | - Zhonghua Wu
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China; University of Chinese Academy of Sciences, Beijing 100049, China.
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2
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Torquato LM, Tyagi G, Sharratt WN, Ahmad Z, Mahmoudi N, Gummel J, Robles ESJ, Cabral JT. Concentration Dependent Asymmetric Synergy in SDS-DDAO Mixed Surfactant Micelles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:7433-7443. [PMID: 38532537 PMCID: PMC11008254 DOI: 10.1021/acs.langmuir.3c03900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 03/04/2024] [Accepted: 03/11/2024] [Indexed: 03/28/2024]
Abstract
We investigate the structure and interactions of a model anionic/amphoteric mixed surfactant micellar system, namely, sodium dodecyl sulfate (SDS) and N,N-dimethyldodecylamine N-oxide (DDAO), employing SANS, FTIR, DLS, and pH measurements, in the range 0.1-100 mM total surfactant concentration and 0-100% DDAO. Increasing surfactant concentration is found to elongate the prolate ellipsoid micelles (RPolar ∼ 25-40 Å), accompanied by up to a 6-fold increase in micellar charge. The surfactant synergy, in terms of micellar charge and size, diffusion coefficient, solution pH, and headgroup interactions, was found to vary with concentration. At lower concentrations (≤50 mM), the SDS-DDAO ratio of maximum synergy is found to be asymmetric (at 65-85% DDAO), which is rationalized using regular solution theory, suggesting an equilibrium between Na+ dissociation, DDAO protonation, and counterion concentration. At higher concentrations, maximum synergy shifts toward the equimolar ratio. Overall, our study expands and unifies previous reports, providing a comprehensive understanding for this model, synergetic mixed micellar system.
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Affiliation(s)
- Luis M.
G. Torquato
- Department
of Chemical Engineering, Imperial College
London, London SW7 2AZ, U.K.
| | - Gunjan Tyagi
- Department
of Chemical Engineering, Imperial College
London, London SW7 2AZ, U.K.
| | - William N. Sharratt
- Department
of Chemical Engineering, Imperial College
London, London SW7 2AZ, U.K.
| | - Zain Ahmad
- Department
of Chemical Engineering, Imperial College
London, London SW7 2AZ, U.K.
| | - Najet Mahmoudi
- ISIS
Neutron and Muon Source, Rutherford Appleton Laboratory, Didcot OX11 0QX, United Kingdom
| | - Jérémie Gummel
- Procter
& Gamble, Brussels Innovation Centre, Temselaan 100, 1853 Strombeek-Bever, Belgium
| | - Eric S. J. Robles
- Procter
& Gamble, Newcastle Innovation Centre, Newcastle upon Tyne NE12
9TS, United Kingdom
| | - João T. Cabral
- Department
of Chemical Engineering, Imperial College
London, London SW7 2AZ, U.K.
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3
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Hendrikse RL, Bayly AE, Jimack PK, Lai X. Using Raman Spectroscopy and Molecular Dynamics to Study Conformation Changes of Sodium Lauryl Ether Sulfate Molecules. J Phys Chem B 2023; 127:4676-4686. [PMID: 37192532 DOI: 10.1021/acs.jpcb.3c02022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
A study using both Raman spectroscopy and molecular dynamics (MD) simulations was carried out for alkyl ethoxysulfate (AES) surfactants at various concentrations in solution. Direct comparison between experiment and simulation shows that the conformational changes observed in MD are in good agreement with those obtained via Raman spectroscopy. We show that there is an increase in the relative number of trans conformations with increasing concentration and illustrate the relationship between phase structure and molecular conformation, which is often speculated but difficult to confirm. Our results open up the possibility of applying MD to other surfactants, with the aim of analyzing conformational behavior, which can typically be difficult to study experimentally using spectroscopy methods, due to large numbers of vibrational modes present in large complex molecules.
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Affiliation(s)
- Rachel L Hendrikse
- School of Chemical and Process Engineering, University of Leeds, Leeds, LS2 9JT, United Kingdom
- EPSRC Centre for Doctoral Training in Fluid Dynamics at Leeds, University of Leeds, Leeds, LS2 9JT, United Kingdom
| | - Andrew E Bayly
- School of Chemical and Process Engineering, University of Leeds, Leeds, LS2 9JT, United Kingdom
| | - Peter K Jimack
- EPSRC Centre for Doctoral Training in Fluid Dynamics at Leeds, University of Leeds, Leeds, LS2 9JT, United Kingdom
| | - Xiaojun Lai
- School of Chemical and Process Engineering, University of Leeds, Leeds, LS2 9JT, United Kingdom
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Scheuing DR. Fourier transform infrared spectroscopy in surfactant science: A personal view. J SURFACTANTS DETERG 2022. [DOI: 10.1002/jsde.12644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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5
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Grady BP. Surfactant mixtures: A short review. J SURFACTANTS DETERG 2022. [DOI: 10.1002/jsde.12642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Brian P. Grady
- School of Chemical, Biological and Materials Engineering and Institute of Applied Surfactant Research University of Oklahoma Norman Oklahoma USA
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Hendrikse RL, Bayly AE, Jimack PK. Studying the Structure of Sodium Lauryl Ether Sulfate Solutions Using Dissipative Particle Dynamics. J Phys Chem B 2022; 126:8058-8071. [PMID: 36179249 PMCID: PMC9574933 DOI: 10.1021/acs.jpcb.2c04329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
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Sodium lauryl ether
sulfate (SLES) is a common anionic surfactant
used in a large number of personal care products. Commercial products
typically contain a distribution in the number of ethoxy groups; despite
this, there is limited existing work studying the effect of the ethoxy
groups on the phase formation and structure. This is particularly
important for the effect the structure has on the viscosity, an important
consideration for commercial products. Dissipative particle dynamics
is used to simulate the full phase diagram of SLES in water, including
both micellar and lyotropic liquid crystal phases. Phase transitions
occur at locations which are in good agreement with experimental data,
and we find that these boundaries can shift as a result of varying
the number of ethoxy groups. Varying the ethoxy groups has a significant
effect on the micellar shape and crystalline spacing, with a reduction
leading to more nonspherical micelles and decreased periodic spacing
of the hexagonal and lamellar phases. Finally, while typical commercial
products contain a distribution of ethoxy groups, computational work
tends to focus on simulations containing a single chain length. We
show that it is valid to use monodisperse simulations to infer behavior
about solutions with a polydisperse chain length, based on its mean
molecular length.
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Affiliation(s)
- Rachel L Hendrikse
- School of Chemical and Process Engineering, University of Leeds, Leeds LS2 9JT, United Kingdom.,EPSRC Centre for Doctoral Training in Fluid Dynamics at Leeds, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - Andrew E Bayly
- School of Chemical and Process Engineering, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - Peter K Jimack
- School of Computing, University of Leeds, Leeds LS2 9JT, United Kingdom
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7
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Danov KD, Marinova KG, Radulova GM, Georgiev MT. Analytical modeling of micelle growth. 5. Molecular thermodynamics of micelles from zwitterionic surfactants. J Colloid Interface Sci 2022; 627:469-482. [PMID: 35870400 DOI: 10.1016/j.jcis.2022.07.087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 07/12/2022] [Accepted: 07/13/2022] [Indexed: 11/19/2022]
Abstract
HYPOTHESIS The critical micelle concentration, aggregation number, shape and length of spherocylindrical micelles in solutions of zwitterionic surfactants can be predicted by knowing the molecular parameters and surfactant concentrations. This can be achieved by upgrading the quantitative molecular thermodynamic model with expressions for the electrostatic interaction energy between the zwitterionic dipoles and micellar hydrophobic cores of spherical and cylindrical shapes. THEORY The correct prediction of the mean micellar aggregation numbers requires precise calculations of the free energy per molecule in the micelles. New analytical expressions for the dipole electrostatic interaction energy are derived based on the exact solutions of the electrostatic problem for a single charge close to a boundary of spherical and cylindrical dielectric media. The obtained general theory is valid for arbitrary ratios between dielectric constants, radii of spheres and cylinders, positions, and orientations of dipoles. FINDINGS The detailed numerical results show quantitatively the effects of the micelle curvature and dielectric properties of the continuum media on the decrease of the dipole electrostatic interaction energy. Excellent agreement was achieved between the theoretical predictions and experimental data for the critical micelle concentration, size and aggregation number of zwitterionic surfactant micelles. This study can be extended to mixed micelles of zwitterionic and ionic surfactants in the presence of salt to interpret and predict the synergistic effect on the rheology of solutions.
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Affiliation(s)
- Krassimir D Danov
- Department of Chemical & Pharmaceutical Engineering, Faculty of Chemistry & Pharmacy, Sofia University, 1164 Sofia, Bulgaria.
| | - Krastanka G Marinova
- Department of Chemical & Pharmaceutical Engineering, Faculty of Chemistry & Pharmacy, Sofia University, 1164 Sofia, Bulgaria
| | - Gergana M Radulova
- Department of Chemical & Pharmaceutical Engineering, Faculty of Chemistry & Pharmacy, Sofia University, 1164 Sofia, Bulgaria
| | - Mihail T Georgiev
- Department of Chemical & Pharmaceutical Engineering, Faculty of Chemistry & Pharmacy, Sofia University, 1164 Sofia, Bulgaria
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8
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Tyagi G, Sharratt WN, Erikson S, Seddon D, Robles ESJ, Cabral JT. Solution Structures of Anionic-Amphoteric Surfactant Mixtures near the Two-Phase Region at Fixed pH. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:7198-7207. [PMID: 35658451 PMCID: PMC9202344 DOI: 10.1021/acs.langmuir.2c00527] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 05/25/2022] [Indexed: 06/15/2023]
Abstract
We examine the solution structures in a mixed surfactant system of sodium dodecyl sulfate (SDS) and N,N-dimethyldodecylamine N-oxide (DDAO) in water, on both sides of the two-phase boundary, employing dynamic light scattering, small-angle neutron scattering, and Fourier transform infrared spectroscopy. The precipitate phase boundary was accessed by lowering pH to 8, from its floating pH 9.5 value, and was experimentally approached from the monomeric and micellar regions in three ways: at fixed DDAO or SDS concentrations and at a fixed (70:30) SDS:DDAO molar ratio. We characterize the size, shape, and interactions of micelles, which elongate approaching the boundary, leading to the formation of disk-like aggregates within the biphasic region, coexisting with micelles and monomers. Our data, from both monomeric and micellar solutions, indicate that the two phase structures formed are largely pathway-independent, with dimensions influenced by both pH and mixed surfactant composition. Precipitation occurs at intermediate stoichiometries with a similar SDS:DDAO ratio, whereas asymmetric stoichiometries form a re-entrant transition, returning to the mixed micelle phase. Overall, our findings demonstrate the effect of stoichiometry and solution pH on the synergistic interaction of mixed surfactants and their impact on phase equilibrium and associated micellar and two-phase structures.
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Affiliation(s)
- Gunjan Tyagi
- Department
of Chemical Engineering, Imperial College
London, London, SW7 2AZ, UK
| | - William N. Sharratt
- Department
of Chemical Engineering, Imperial College
London, London, SW7 2AZ, UK
| | - Sofia Erikson
- Department
of Chemical Engineering, Imperial College
London, London, SW7 2AZ, UK
| | - Dale Seddon
- Department
of Chemical Engineering, Imperial College
London, London, SW7 2AZ, UK
| | - Eric S. J. Robles
- The
Procter & Gamble Company, Newcastle Innovation Centre, Newcastle-Upon-Tyne NE12
9TS, UK
| | - João T. Cabral
- Department
of Chemical Engineering, Imperial College
London, London, SW7 2AZ, UK
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9
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Arya S, Patidar R, Ray D, Aswal VK, Ranjan N, Bahadur P, Tiwari S. Structural transitions in TPGS micelles induced by trehalose as a model cryoprotectant. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128714] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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10
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Chen J, Tan X, Fang B, Liu B, Gao H, Li K, Yu L, Xu K, Lu Y, Qiu X. Rheological behavior of a novel fracturing fluid formed from amine oxide surfactants. J SURFACTANTS DETERG 2022. [DOI: 10.1002/jsde.12606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jing Chen
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Lab of Chemical Engineering Rheology, Research Center of Chemical Engineering East China University of Science and Technology Shanghai China
| | - Xinyuan Tan
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Lab of Chemical Engineering Rheology, Research Center of Chemical Engineering East China University of Science and Technology Shanghai China
| | - Bo Fang
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Lab of Chemical Engineering Rheology, Research Center of Chemical Engineering East China University of Science and Technology Shanghai China
| | - Boxiang Liu
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Lab of Chemical Engineering Rheology, Research Center of Chemical Engineering East China University of Science and Technology Shanghai China
| | - Hang Gao
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Lab of Chemical Engineering Rheology, Research Center of Chemical Engineering East China University of Science and Technology Shanghai China
| | - Kejing Li
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Lab of Chemical Engineering Rheology, Research Center of Chemical Engineering East China University of Science and Technology Shanghai China
| | - Luyao Yu
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Lab of Chemical Engineering Rheology, Research Center of Chemical Engineering East China University of Science and Technology Shanghai China
| | - Ke Xu
- Langfang Filial of Research Institute of Petroleum Exploration and Development, Petro China Langfang China
| | - Yongjun Lu
- Langfang Filial of Research Institute of Petroleum Exploration and Development, Petro China Langfang China
| | - Xiaohui Qiu
- Langfang Filial of Research Institute of Petroleum Exploration and Development, Petro China Langfang China
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11
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Tyagi G, Seddon D, Khodaparast S, Sharratt WN, Robles ES, Cabral JT. Tensiometry and FTIR study of the synergy in mixed SDS:DDAO surfactant solutions at varying pH. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126414] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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12
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Khodaparast S, Marcos J, Sharratt WN, Tyagi G, Cabral JT. Surface-Induced Crystallization of Sodium Dodecyl Sulfate (SDS) Micellar Solutions in Confinement. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:230-239. [PMID: 33347298 DOI: 10.1021/acs.langmuir.0c02821] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
We investigate the role of confinement on the onset of crystallization in subcooled micellar solutions of sodium dodecyl sulfate (SDS), examining the impact of sample volume, substrate surface energy, and surface roughness. Using small angle neutron scattering (SANS) and dynamic light scattering (DLS), we measure the crystallization temperature upon cooling and the metastable zone width (MSZW) for bulk 10-30 wt% SDS solutions. We then introduce a microdroplet approach to quantify the impact of surface free energy (18-65 mN/m) and substrate roughness (Rα ≃ 0-60 μm) on the kinetics of surface-induced crystallization through measurements of induction time (ti) under isothermal conditions. While ti is found to decrease exponentially with decreasing temperature (increasing subcooling) for all tested surfaces, increasing the surface energy could cause a significant further reduction of up to ∼40 fold. For substrates with the lowest surface energy and longest ti, microscale surface roughness is found to enhance crystal nucleation, in particular for Rα ≥ 10 μm. Finally, we demonstrate that tuning the surface energy and microscopic roughness can be effective routes to promote or delay nucleation in bulk-like volumes, thus greatly impacting the stability of surfactant solutions at lower temperatures.
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Affiliation(s)
- Sepideh Khodaparast
- School of Mechanical Engineering, University of Leeds, LS2 9JT Leeds, United Kingdom
| | - Julius Marcos
- Department of Chemical Engineering, Imperial College London, SW7 2AZ London, United Kingdom
| | - William N Sharratt
- Department of Chemical Engineering, Imperial College London, SW7 2AZ London, United Kingdom
| | - Gunjan Tyagi
- Department of Chemical Engineering, Imperial College London, SW7 2AZ London, United Kingdom
| | - João T Cabral
- Department of Chemical Engineering, Imperial College London, SW7 2AZ London, United Kingdom
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