1
|
Zhang L, Tian Y, Song A, Hao J. Particle-Polymer Union with Changeable Wettability for Constructing Bijels Using a Simple Mixing Method. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:16513-16521. [PMID: 37932941 DOI: 10.1021/acs.langmuir.3c02441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2023]
Abstract
Bicontinuous emulsion gels (bijels) are nonequilibrium dispersed systems with particle-stabilized continuous fluid domains, and the internal connectivity of channels brings the possibility of efficient mass transport, endowing bijels great potential in diverse applications. Different from the common method to produce bijels, the spinodal decomposition, which needs precise temperature control and is restricted by the selection of liquid pairs, in this work, a direct mixing method was performed to construct bijels, simplifying the fabrication process. The hydrophilic rod-shaped cellulose nanocrystalline (CNC) particles were in situ combined with the hydrophobic polymer, aminopropyl-terminated polydimethylsiloxane (PDMS-NH2), to acquire a controllable interfacial wettability of CNC. The CNC@mPDMS-NH2 complexes were adsorbed at the water-toluene interface and achieved a change of Pickering emulsion types, oil-in-water, bijel, and water-in-oil, through tuning the interfacial performance of CNC@mPDMS-NH2 complexes. A three-dimensional scanning image and curvature calculation were applied to verify the obtained bijel, further demonstrating the successful preparation of the bicontinuous structure. This work enriched the members of particles for stabilizing bijels and was considered to be scalable in manufacturing for applications on a large scale.
Collapse
Affiliation(s)
- Liya Zhang
- Key Laboratory of Colloid and Interface Chemistry (Ministry of Education), Shandong University, Jinan 250100, China
| | - Yanmei Tian
- Key Laboratory of Colloid and Interface Chemistry (Ministry of Education), Shandong University, Jinan 250100, China
| | - Aixin Song
- Key Laboratory of Colloid and Interface Chemistry (Ministry of Education), Shandong University, Jinan 250100, China
| | - Jingcheng Hao
- Key Laboratory of Colloid and Interface Chemistry (Ministry of Education), Shandong University, Jinan 250100, China
| |
Collapse
|
2
|
Lee J, Mohraz A, Won Y. Enhanced Capillary Wicking through Hierarchically Porous Constructs Derived from Bijel Templates. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:14063-14072. [PMID: 36342818 DOI: 10.1021/acs.langmuir.2c01965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Liquid capillarity through porous media can be enhanced by a rational design of hierarchically porous constructs that suggest sufficiently large liquid pathways from an upper-level hierarchy as well as capillary pressure enabled by a lower hierarchy. Here, we demonstrate a material design strategy utilizing a new class of self-assembled soft materials, called bicontinuous interfacially jammed emulsion gels (bijels), to produce hierarchically porous copper, which enables the unique combination of unprecedented control over both macropores and mesopores in a regular, uniform, and continuous arrangement. The dynamic droplet topologies on the hierarchically copper pores prove the significant enhancement in liquid capillarity compared to homogeneous porous structures. The role of nanoscale morphology in liquid infiltration is further investigated through environmental scanning electron microscopy, in which wetting through the mesopores occurs at the beginning, followed by liquid transport through macropores. This understanding on capillary wicking will allow us to design better hierarchically porous media that can address performance breakthroughs in interfacial applications, ranging from battery electrodes, cell delivery in biomedical devices, to capillary-fed thermal management systems.
Collapse
Affiliation(s)
- Jonggyu Lee
- Department of Mechanical and Aerospace Engineering, University of California, Irvine, Irvine, California92697, United States
| | - Ali Mohraz
- Department of Chemical and Biomolecular Engineering, University of California, Irvine, Irvine, California92697, United States
- Department of Materials Science and Engineering, University of California, Irvine, Irvine, California92697, United States
| | - Yoonjin Won
- Department of Mechanical and Aerospace Engineering, University of California, Irvine, Irvine, California92697, United States
- Department of Materials Science and Engineering, University of California, Irvine, Irvine, California92697, United States
| |
Collapse
|
3
|
Ying J, Lenaerts S, Symes MD, Yang X. Hierarchical Design in Nanoporous Metals. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2106117. [PMID: 35900062 PMCID: PMC9507373 DOI: 10.1002/advs.202106117] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 02/15/2022] [Indexed: 05/28/2023]
Abstract
Hierarchically porous metals possess intriguing high accessibility of matter molecules and unique continuous metallic frameworks, as well as a high level of exposed active atoms. High rates of diffusion and fast energy transfer have been important and challenging goals of hierarchical design and porosity control with nanostructured metals. This review aims to summarize recent important progress toward the development of hierarchically porous metals, with special emphasis on synthetic strategies, hierarchical design in structure-function and corresponding applications. The current challenges and future prospects in this field are also discussed.
Collapse
Affiliation(s)
- Jie Ying
- School of Chemical Engineering and TechnologySun Yat‐sen University (SYSU)Zhuhai519082P. R. China
| | - Silvia Lenaerts
- Research Group of Sustainable Energy and Air Purification (DuEL), Department of Bioscience EngineeringUniversity of AntwerpGroenenborgerlaan 171Antwerp2020Belgium
| | - Mark D. Symes
- WestCHEM, School of ChemistryUniversity of GlasgowGlasgowG12 8QQUnited Kingdom
| | - Xiao‐Yu Yang
- State Key Laboratory of Advanced Technology for Materials Synthesis and ProcessingWuhan University of TechnologyWuhan430070P. R. China
- School of Engineering and Applied SciencesHarvard UniversityCambridgeMA02138USA
| |
Collapse
|
4
|
Ching H, Mohraz A. Bijel rheology reveals a 2D colloidal glass wrapped in 3D. SOFT MATTER 2022; 18:4227-4238. [PMID: 35607949 DOI: 10.1039/d2sm00407k] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
We present rheological evidence demonstrating the glass-like nature of bicontinuous interfacially jammed emulsion gels (bijels). Under small amplitude oscillatory shear, bijels exhibited rheological signatures akin to α and β relaxation that are also invariable to interfacial tension changes, behaviors which are reminiscent of caged particle dynamics found in colloidal glasses, and well described by a previously reported adaptation of mode-coupling theory for colloidal glass rheology. Guided by their rheological signatures and supported by particle detachment and attraction energy approximations, we rationalize that bijels can be represented as 2-dimensional (2D) colloidal glasses that percolate in 3-dimensional (3D) space, and attractive interactions are not required for their stability. To provide further support for this conjecture, we qualitatively compare the rheology of bijels and a capillary suspension that is stabilized by strong, rigid capillary bridges between the particles, beyond their limit of linear viscoelasticity. Our results demonstrate that the strong adsorption of particles to the continuous interface and the lack of strong attractive interparticle forces enable recovery by interfacial tension into new jammed configurations after shear deformation. These behaviors are qualitatively different from those in the capillary suspension, where the breaking of attractive interparticle bonds results in dramatic changes to the microstructure and rheology over a narrow range of shear amplitudes. Our findings unveil bijels as 2D colloidal glasses weaving in 3D space and establish that interparticle attractions are not required for stability in bijels, and interfacial jamming alone is sufficient to impart viscoelasticity and gel-like rheology to these materials.
Collapse
Affiliation(s)
- Herman Ching
- Department of Chemical and Biomolecular Engineering, University of California, Irvine, CA 92697-2580, USA.
| | - Ali Mohraz
- Department of Chemical and Biomolecular Engineering, University of California, Irvine, CA 92697-2580, USA.
| |
Collapse
|
5
|
Zhu P, Wang L. Microfluidics-Enabled Soft Manufacture of Materials with Tailorable Wettability. Chem Rev 2021; 122:7010-7060. [PMID: 34918913 DOI: 10.1021/acs.chemrev.1c00530] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Microfluidics and wettability are interrelated and mutually reinforcing fields, experiencing synergistic growth. Surface wettability is paramount in regulating microfluidic flows for processing and manipulating fluids at the microscale. Microfluidics, in turn, has emerged as a versatile platform for tailoring the wettability of materials. We present a critical review on the microfluidics-enabled soft manufacture (MESM) of materials with well-controlled wettability and their multidisciplinary applications. Microfluidics provides a variety of liquid templates for engineering materials with exquisite composition and morphology, laying the foundation for precisely controlling the wettability. Depending on the degree of ordering, liquid templates are divided into individual droplets, one-dimensional (1D) arrays, and two-dimensional (2D) or three-dimensional (3D) assemblies for the modular fabrication of microparticles, microfibers, and monolithic porous materials, respectively. Future exploration of MESM will enrich the diversity of chemical composition and physical structure for wettability control and thus markedly broaden the application horizons across engineering, physics, chemistry, biology, and medicine. This review aims to systematize this emerging yet robust technology, with the hope of aiding the realization of its full potential.
Collapse
Affiliation(s)
- Pingan Zhu
- Department of Mechanical Engineering, City University of Hong Kong, Hong Kong, China
| | - Liqiu Wang
- Department of Mechanical Engineering, The University of Hong Kong, Hong Kong, China
| |
Collapse
|
6
|
Li J, Sun H, Wang M. Phase Inversion-Based Technique for Fabricating Bijels and Bijels-Derived Structures with Tunable Microstructures. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:14644-14655. [PMID: 33233890 DOI: 10.1021/acs.langmuir.0c02507] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Bicontinuous interfacially jammed emulsion gels ("bijels") are a new class of soft matter containing two interpenetrating continuous phases. They have great potential for applications in many areas. However, difficulties in fabricating bijels and controlling structural features of interest have posed severe barriers to their wide applications. In this study, a phase inversion-based technique was developed for fabricating bijels and bijels-derived structures. The effects of varying the composition of casting solutions for the fabrication of bijels on the porosity, oil-to-water percentage, and domain size of bijels were investigated. Composite bijels prepared from two organic monomers were also made, demonstrating the flexibility of the phase inversion-based technique for the fabrication of bijels. Interestingly, the incorporation of a second monomer into the casting solution also affected the porosity and domain size of bijels formed, which may provide a new strategy for the controlled fabrication of bijels. Doxorubicin hydrochloride (DOX, as a model drug)-loaded bijels-derived hybrid hydrogels comprising two continuous phases were successfully made, with one phase being cross-linked alginate that carried the drug. Controlled release of DOX from the bijels-derived structures could be achieved. In vitro degradation study indicated that cross-linking of alginate in bijels-derived hybrid hydrogels controlled alginate degradation, thereby affecting the DOX release behavior. Our current work has provided a facile and reproducible protocol for the controlled fabrication of bijels and bijels-derived structures, which facilitates expanding their applications in the biomedical field.
Collapse
Affiliation(s)
- Junzhi Li
- Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Haoran Sun
- Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Min Wang
- Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| |
Collapse
|
7
|
Pálvölgyi PS, Nelo M, Pitkänen O, Peräntie J, Liimatainen H, Myllymäki S, Jantunen H, Kordas K. Ultra-low permittivity porous silica-cellulose nanocomposite substrates for 6G telecommunication. NANOTECHNOLOGY 2020; 31:435203. [PMID: 32650329 DOI: 10.1088/1361-6528/aba4cc] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The continuously increasing demand for faster data traffic of our telecommunication devices requires new and better materials and devices that operate at higher frequencies than today. In this work, a porous composite of silica nanoshells and cellulose nanofibers is demonstrated as a suitable candidate of dielectric substrates to be used in future 6G frequency bands. The hollow nanospheres of amorphous SiO2 with outstanding electromagnetic properties were obtained by a template-assisted Stöber process, in which a thin shell of silica is grown on polystyrene nanospheres first, and then the polymer core is burned off in a subsequent step. To be able to produce substrates with sufficient mechanical integrity, the nanoshells of SiO2 were reinforced with cellulose nanofibers resulting in a porous composite of very low mass density (0.19 ± 0.02 g cm-3), which is easy to press and mold to form films or slabs. The low relative dielectric permittivity (ε r = 1.19 ± 0.01 at 300 GHz and ε r = 1.17 ± 0.01 at 2.0 THz) and corresponding loss tangent (tan δ= 0.011 ± 0.001 at 300 GHz and tan δ = 0.011 ± 0.001 at 2.0 THz) of the composite films are exploited in substrates for radio frequency filter structures designed for 300 GHz operation.
Collapse
Affiliation(s)
- Petra S Pálvölgyi
- Microelectronics research Unit, Faculty of Information Technology and Electrical Engineering, University of Oulu, P.O. Box 4500, FI-90014, Finland
| | | | | | | | | | | | | | | |
Collapse
|
8
|
|
9
|
Di Vitantonio G, Lee D, Stebe KJ. Fabrication of solvent transfer-induced phase separation bijels with mixtures of hydrophilic and hydrophobic nanoparticles. SOFT MATTER 2020; 16:5848-5853. [PMID: 32181471 DOI: 10.1039/d0sm00071j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Bicontinuous interfacially jammed emulsion gels (bijels), in which the oil and water phases are co-continuous throughout the structure, have potential for applications in separation, catalysis, tissue engineering and energy devices. Among the possible fabrication paths, the solvent transfer-induced phase separation (STRIPS) method has proven to be a powerful approach to produce bijels in a continuous fashion with a broad selection of liquids and nanoparticles. The successful formation of bicontinuous domains requires the use of neutrally wetting particles which was achieved by in situ modification of silica nanoparticles with an oppositely charged surfactant. This approach, however, is not ideal for applications that are adversely affected by the presence of surfactant. In this work, we use a pair of nanoparticles, one hydrophilic, and the other hydrophobic, to stabilize STRIPS bijels without any surfactants and show that the ratio of the hydrophilic to hydrophobic nanoparticles required to form stable bijels changes with the polarity of the oil phase. Highly non-polar oils require a smaller ratio than moderately polar oils. Furthermore, if a sufficiently polar oil is selected, STRIPS bijels can be stabilized using only the hydrophilic nanoparticle. Our results demonstrate the potential to imbue the interface of biphasic liquid mixtures such as bijels with multifunctionality by using two functional nanoparticles of opposite polarity.
Collapse
Affiliation(s)
- Giuseppe Di Vitantonio
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, 220 S. 33rd Street, Towne Bldg., USA.
| | | | | |
Collapse
|
10
|
Kim S, Lee J. Spinodal decomposition: a new approach to hierarchically porous inorganic materials for energy storage. Natl Sci Rev 2019; 7:1635-1637. [PMID: 34691498 PMCID: PMC8288722 DOI: 10.1093/nsr/nwz217] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Seongseop Kim
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Korea
| | - Jinwoo Lee
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Korea
| |
Collapse
|
11
|
Macmillan KA, Royer JR, Morozov A, Joshi YM, Cloitre M, Clegg PS. Rheological Behavior and in Situ Confocal Imaging of Bijels Made by Mixing. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:10927-10936. [PMID: 31347847 DOI: 10.1021/acs.langmuir.9b00636] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Bijels (bicontinuous interfacially jammed emulsion gels) have the potential to be useful in many different applications due to their internal connectivity and the possibility of efficient mass transport through the channels. Recently, new methods of making the bijel have been proposed, which simplify the fabrication process, making commercial application more realistic. Here, we study the flow properties of bijels prepared by mixing alone using oscillatory rheology combined with confocal microscopy and also squeezing flow experiments. We found that the bijel undergoes a two-step yielding process where the first step corresponds to the fluidizing of the interface, allowing the motion of the structure, and the second step corresponds to the breaking of the structure. In the squeeze flow experiments, the yield stress of the bijel is observed to show a power law dependence on squeezing speed. However, when stress in excess of yield stress is plotted against shear rate, all the different squeeze flow data show a superposition.
Collapse
Affiliation(s)
- Katherine A Macmillan
- School of Physics and Astronomy , University of Edinburgh , James Clerk Maxwell Building, Peter Guthrie Tait Road , Edinburgh EH9 3FD , U.K
| | - John R Royer
- School of Physics and Astronomy , University of Edinburgh , James Clerk Maxwell Building, Peter Guthrie Tait Road , Edinburgh EH9 3FD , U.K
| | - Alexander Morozov
- School of Physics and Astronomy , University of Edinburgh , James Clerk Maxwell Building, Peter Guthrie Tait Road , Edinburgh EH9 3FD , U.K
| | - Yogesh M Joshi
- Department of Chemical Engineering , Indian Institute of Technology Kanpur , Kanpur 208016 , India
| | - Michel Cloitre
- Molecular, Macromolecular Chemistry, and Materials , CNRS, ESPCI Paris, PSL Research University , 10 Rue Vauquelin , 75005 Paris , France
| | - Paul S Clegg
- School of Physics and Astronomy , University of Edinburgh , James Clerk Maxwell Building, Peter Guthrie Tait Road , Edinburgh EH9 3FD , U.K
| |
Collapse
|
12
|
Thorson TJ, Gurlin RE, Botvinick EL, Mohraz A. Bijel-templated implantable biomaterials for enhancing tissue integration and vascularization. Acta Biomater 2019; 94:173-182. [PMID: 31233892 DOI: 10.1016/j.actbio.2019.06.031] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2019] [Revised: 05/29/2019] [Accepted: 06/19/2019] [Indexed: 12/19/2022]
Abstract
Mitigation of the foreign body response (FBR) and successful tissue integration are essential to ensuring the longevity of implanted devices and biomaterials. The use of porous materials and coatings has been shown to have an impact, as the textured surfaces can mediate macrophage interactions with the implant and influence the FBR, and the pores can provide space for vascularization and tissue integration. In this study, we use a new class of implantable porous biomaterials templated from bicontinuous interfacially jammed emulsion gels (bijels), which offer a fully percolating, non-constricting porous network with a uniform pore diameter on the order of tens of micrometers, and surfaces with consistent curvature. We demonstrate that these unique morphological features, inherent to bijel-templated materials (BTMs), can enhance tissue integration and vascularization, and reduce the FBR. Cylindrical polyethylene glycol diacrylate (PEGDA) BTMs, along with PEGDA particle-templated materials (PTMs), and non-templated materials (NTMs), were implanted into the subcutaneous space of athymic nude mice. After 28 days, implants were retrieved and analyzed via histological techniques. Within BTMs, blood vessels of increased size and depth, changes in collagen deposition, and increased presence of pro-healing macrophages were observed compared to that of PTM and NTM implants. Bijel templating offers a new route to biomaterials that can improve the function and longevity of implantable devices. STATEMENT OF SIGNIFICANCE: All implanted biomaterials are subject to the foreign body response (FBR) which can have a detrimental effect on their efficacy. Altering the surface chemistry can decrease the FBR by limiting the amount of proteins adsorbed to the implant. This effect can be enhanced by including pores in the biomaterial to allow new tissue growth as the implant becomes integrated in the body. Here, we introduce a new class of self-assembled biomaterials comprising a fully penetrating, non-constricting pore phase with hyperbolic (saddle) surfaces for enhanced tissue integration. These unique morphological characteristics result in dense blood vessel formation and favorable tissue response properties demonstrated in a four-week implantation study.
Collapse
|
13
|
Di Vitantonio G, Wang T, Haase MF, Stebe KJ, Lee D. Robust Bijels for Reactive Separation via Silica-Reinforced Nanoparticle Layers. ACS NANO 2019; 13:26-31. [PMID: 30525442 DOI: 10.1021/acsnano.8b05718] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Pickering emulsions have been successfully used as media for catalysis and separation. However, simultaneous reaction and separation cannot be performed in a continuous mode in these systems, because reagents cannot be readily loaded into or recovered from the dispersed phase. Bicontinuous interfacially jammed emulsion gels (bijels), in which the oil and water phases are continuous throughout the structure, have potential as media for simultaneous reaction and separation in a continuous mode. In this work, we take a major step toward realizing this vision by demonstrating the ability of bijels to be used in reactive separation performed in a batch fashion. To perform effectively, bijels must maintain their morphology and interfacial mass transfer properties during reaction. To strengthen the bijels, we modify the solvent transfer-induced phase separation (STRIPS) method to make bijels resistant to mechanical stresses and prevent detachment of nanoparticles from the oil/water interface due to pH changes by chemically fusing the interfacial nanoparticles. The reinforced bijel is successfully tested in base-catalyzed hydrolysis of esters and remains robust under these challenging conditions.
Collapse
Affiliation(s)
- Giuseppe Di Vitantonio
- Department of Chemical and Biomolecular Engineering , University of Pennsylvania , Philadelphia , Pennsylvania 19104 , United States
| | - Tiancheng Wang
- Department of Chemical and Biomolecular Engineering , University of Pennsylvania , Philadelphia , Pennsylvania 19104 , United States
| | - Martin F Haase
- Department of Chemical Engineering, Henry M. Rowan College of Engineering , Rowan University , Glassboro , New Jersey 08028 , United States
| | - Kathleen J Stebe
- Department of Chemical and Biomolecular Engineering , University of Pennsylvania , Philadelphia , Pennsylvania 19104 , United States
| | - Daeyeon Lee
- Department of Chemical and Biomolecular Engineering , University of Pennsylvania , Philadelphia , Pennsylvania 19104 , United States
| |
Collapse
|
14
|
Li T, Klebes J, Dobnikar J, Clegg PS. Controlling the morphological evolution of a particle-stabilized binary-component system. Chem Commun (Camb) 2019; 55:5575-5578. [DOI: 10.1039/c9cc01519a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This work bridges the morphological evolution in particle-stabilized low molecular weight liquids and that in polymer blends.
Collapse
Affiliation(s)
- Tao Li
- Beijing National Laboratory for Condensed Matter Physics and Key Laboratory of Soft Matter Physics
- Institute of Physics
- Chinese Academy of Sciences
- Beijing 100190
- China
| | | | - Jure Dobnikar
- Beijing National Laboratory for Condensed Matter Physics and Key Laboratory of Soft Matter Physics
- Institute of Physics
- Chinese Academy of Sciences
- Beijing 100190
- China
| | - Paul S. Clegg
- School of Physics and Astronomy
- University of Edinburgh
- James Clerk Maxwell Building
- Edinburgh
- UK
| |
Collapse
|
15
|
Shi S, Russell TP. Nanoparticle Assembly at Liquid-Liquid Interfaces: From the Nanoscale to Mesoscale. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1800714. [PMID: 30035834 DOI: 10.1002/adma.201800714] [Citation(s) in RCA: 177] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 03/29/2018] [Indexed: 05/21/2023]
Abstract
In the past few decades, novel syntheses of a wide range of nanoparticles (NPs) with well-defined chemical composition and structure have opened tremendous opportunities in areas ranging from optical and electronic devices to biomedical markers. Controlling the assembly of such well-defined NPs is important to effectively harness their unique properties. The assembly of NPs at liquid-liquid interfaces is becoming a central topic both in surface and colloid science. Hierarchical structures, including 2D films, 3D capsules, and structured liquids, have been generating significant interest and are showing promise for physical, chemical, and biological applications. Here, a brief overview of the development of the self-assembly of NPs at liquid-liquid interfaces is provided, from theory to experiment, from synthetic NPs to bio-nanoparticles, from water-oil to water-water, and from "liquid-like" to "solid-like" assemblies.
Collapse
Affiliation(s)
- Shaowei Shi
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Thomas P Russell
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
- Department of Polymer Science and Engineering, University of Massachusetts, Amherst, MA, 01003, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, 94720, USA
| |
Collapse
|
16
|
Carmack JM, Millett PC. Tuning thin-film bijels with applied external electric fields. SOFT MATTER 2018; 14:4344-4354. [PMID: 29761184 DOI: 10.1039/c8sm00638e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The tunability of thin-film bijels using applied external electric fields is explored using a Cahn-Hilliard Langevin dynamics computational model. Dielectric contrast between liquid domains governs liquid domain alignment and was varied in the simulations. Dielectric contrast between colloidal particles and liquid matrix induces dipolar particle interactions and was also varied in the simulations. The study reveals unique internal morphologies including those with through-thickness liquid domains. Significant results include identification of electric field effects on phase evolution and final morphology as well as relevant mechanisms. It was also found that particle chains act as nucleation sites for phase separation. The resultant morphologies were analyzed in terms of particle attachment to phase interface regions as well as the average channel diameter. Electric field effects and mechanisms on morphology are identified and compared with other morphology-tuning parameters such as particle loading and liquid-liquid composition.
Collapse
Affiliation(s)
- Joseph M Carmack
- Department of Mechanical Engineering, University of Arkansas, Fayetteville, AR 72701, USA.
| | | |
Collapse
|
17
|
Huang C, Chai Y, Jiang Y, Forth J, Ashby PD, Arras MML, Hong K, Smith GS, Yin P, Russell TP. The Interfacial Assembly of Polyoxometalate Nanoparticle Surfactants. NANO LETTERS 2018; 18:2525-2529. [PMID: 29558625 DOI: 10.1021/acs.nanolett.8b00208] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Polyoxometalates (POMs) using {Mo72V30} as an example, dissolved in water, can interact with amine-terminated polydimethylsiloxane (PDMS-NH2) dissolved in toluene at the water/toluene interface to form POM-surfactants that significantly lower the interfacial tension and can be used to stabilize liquids via interfacial elasticity. The jamming of the POM-surfactants at the water/oil interface with consequent wrinkling occurs with a decrease in the interfacial area. The packing density of the POM-surfactants at the interface can be tuned by varying the strength of screening with the addition of cations with differing hydrated radii.
Collapse
Affiliation(s)
- Caili Huang
- Polymer Science and Engineering Department , University of Massachusetts , 120 Governors Drive , Conte Center for Polymer Research, Amherst , Massachusetts 01003 , United States
| | | | | | | | | | | | | | | | - Panchao Yin
- South China Advanced Institute for Soft Matter Science and Technology , South China University of Technology , Guangzhou 510640 , China
| | - Thomas P Russell
- Polymer Science and Engineering Department , University of Massachusetts , 120 Governors Drive , Conte Center for Polymer Research, Amherst , Massachusetts 01003 , United States
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering , Beijing University of Chemical Technology , Beijing 100029 , China
| |
Collapse
|
18
|
Zhang P, Zhang X, Kang X, Liu H, Chen C, Xie C, Han B. Salt-mediated synthesis of bimetallic networks with structural defects and their enhanced catalytic performances. Chem Commun (Camb) 2018; 54:12065-12068. [DOI: 10.1039/c8cc07029f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Bimetallic alloys with abundant of structural defects and enhanced catalytic performances were prepared tailoring by salts.
Collapse
Affiliation(s)
- Pei Zhang
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Colloid and Interface and Thermodynamics
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences
| | - Xiudong Zhang
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Colloid and Interface and Thermodynamics
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences
| | - Xinchen Kang
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Colloid and Interface and Thermodynamics
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences
| | - Huizhen Liu
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Colloid and Interface and Thermodynamics
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences
| | - Chunjun Chen
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Colloid and Interface and Thermodynamics
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences
| | - Chao Xie
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Colloid and Interface and Thermodynamics
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences
| | - Buxing Han
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Colloid and Interface and Thermodynamics
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences
| |
Collapse
|
19
|
Welch PM, Lee MN, Parra-Vasquez ANG, Welch CF. Jammed Limit of Bijel Structure Formation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:13133-13138. [PMID: 29095625 DOI: 10.1021/acs.langmuir.7b02805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Over the past decade, methods to control microstructure in heterogeneous mixtures by arresting spinodal decomposition via the addition of colloidal particles have led to an entirely new class of bicontinuous materials known as bijels. Herein, we present a new model for the development of these materials that yields to both numerical and analytical evaluation. This model reveals that a single dimensionless parameter that captures both chemical and environmental variables dictates the dynamics and ultimate structure formed in bijels. We demonstrate that this parameter must fall within a fixed range in order for jamming to occur during spinodal decomposition, as well as show that known experimental trends for the characteristic domain sizes and time scales for formation are recovered by this model.
Collapse
Affiliation(s)
- P M Welch
- Theoretical Division and Materials Science and Technology Division, Los Alamos National Laboratory , Los Alamos, New Mexico 87544, United States
| | - M N Lee
- Theoretical Division and Materials Science and Technology Division, Los Alamos National Laboratory , Los Alamos, New Mexico 87544, United States
| | - A N G Parra-Vasquez
- Theoretical Division and Materials Science and Technology Division, Los Alamos National Laboratory , Los Alamos, New Mexico 87544, United States
| | - C F Welch
- Theoretical Division and Materials Science and Technology Division, Los Alamos National Laboratory , Los Alamos, New Mexico 87544, United States
| |
Collapse
|
20
|
Analytical and preparative polymethacrylate monolith fabrication: effect of porogen content and column size on pore morphology. Colloid Polym Sci 2017. [DOI: 10.1007/s00396-017-4213-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
21
|
Meng Q, Qin K, Ma L, He C, Liu E, He F, Shi C, Li Q, Li J, Zhao N. N-Doped Porous Carbon Nanofibers/Porous Silver Network Hybrid for High-Rate Supercapacitor Electrode. ACS APPLIED MATERIALS & INTERFACES 2017; 9:30832-30839. [PMID: 28829117 DOI: 10.1021/acsami.7b08610] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
A three-dimensional cross-linked porous silver network (PSN) is fabricated by silver mirror reaction using polymer foam as the template. The N-doped porous carbon nanofibers (N-PCNFs) are further prepared on PSN by chemical vapor deposition and treated by ammonia gas subsequently. The PSN substrate serving as the inner current collector will improve the electron transport efficiency significantly. The ammonia gas can not only introduce nitrogen doping into PCNFs but also increase the specific surface area of PCNFs at the same time. Because of its large surface area (801 m2/g), high electrical conductivity (211 S/cm), and robust structure, the as-constructed N-PCNFs/PSN demonstrates a specific capacitance of 222 F/g at the current density of 100 A/g with a superior rate capability of 90.8% of its initial capacitance ranging from 1 to 100 A/g while applied as the supercapacitor electrode. The symmetric supercapacitor device based on N-PCNFs/PSN displays an energy density of 8.5 W h/kg with power density of 250 W/kg and excellent cycling stability, which attains 103% capacitance retention after 10 000 charge-discharge cycles at a high current density of 20 A/g, which indicates that N-PCNFs/PSN is a promising candidate for supercapacitor electrode materials.
Collapse
Affiliation(s)
- Qingshi Meng
- School of Materials Science and Engineering and Tianjin Key Laboratory of Composites and Functional Materials, Tianjin University , Tianjin 300350, China
| | - Kaiqiang Qin
- School of Materials Science and Engineering and Tianjin Key Laboratory of Composites and Functional Materials, Tianjin University , Tianjin 300350, China
| | - Liying Ma
- School of Materials Science and Engineering and Tianjin Key Laboratory of Composites and Functional Materials, Tianjin University , Tianjin 300350, China
| | - Chunnian He
- School of Materials Science and Engineering and Tianjin Key Laboratory of Composites and Functional Materials, Tianjin University , Tianjin 300350, China
- Collaborative Innovation Center of Chemical Science and Engineering , Tianjin 300350, China
- Key Laboratory of Advanced Ceramics and Machining Technology, Ministry of Education , Tianjin 300350, China
| | - Enzuo Liu
- School of Materials Science and Engineering and Tianjin Key Laboratory of Composites and Functional Materials, Tianjin University , Tianjin 300350, China
- Collaborative Innovation Center of Chemical Science and Engineering , Tianjin 300350, China
| | - Fang He
- School of Materials Science and Engineering and Tianjin Key Laboratory of Composites and Functional Materials, Tianjin University , Tianjin 300350, China
| | - Chunsheng Shi
- School of Materials Science and Engineering and Tianjin Key Laboratory of Composites and Functional Materials, Tianjin University , Tianjin 300350, China
| | - Qunying Li
- School of Materials Science and Engineering and Tianjin Key Laboratory of Composites and Functional Materials, Tianjin University , Tianjin 300350, China
| | - Jiajun Li
- School of Materials Science and Engineering and Tianjin Key Laboratory of Composites and Functional Materials, Tianjin University , Tianjin 300350, China
| | - Naiqin Zhao
- School of Materials Science and Engineering and Tianjin Key Laboratory of Composites and Functional Materials, Tianjin University , Tianjin 300350, China
- Collaborative Innovation Center of Chemical Science and Engineering , Tianjin 300350, China
- Key Laboratory of Advanced Ceramics and Machining Technology, Ministry of Education , Tianjin 300350, China
| |
Collapse
|
22
|
Mahmoudi N, Stradner A. Structural arrest and dynamic localization in biocolloidal gels. SOFT MATTER 2017; 13:4629-4635. [PMID: 28613330 DOI: 10.1039/c7sm00496f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Casein micelles interacting via an entropic intermediate-ranged depletion attraction exhibit a fluid-to-gel transition due to arrested spinodal decomposition. The bicontinuous networked structure of the gel freezes shortly after formation. We determine the timescales of structural arrest from the build-up of network rigidity after pre-shear rejuvenation, and find that the arrest time as well as the plateau elastic modulus of the gel diverge as a function of the volume fraction and interaction potential. Moreover, we show using scaling from naïve mode coupling theory that their mechanical properties are dictated by their microscopic dynamics rather than their heterogeneous large scale structure.
Collapse
Affiliation(s)
- N Mahmoudi
- Adolphe Merkle Institute, University of Fribourg, Route de l'ancienne Papeterie 1, Marly, Switzerland. and Physical Chemistry, Lund University, Getingevägen 60, Lund, Sweden.
| | - A Stradner
- Physical Chemistry, Lund University, Getingevägen 60, Lund, Sweden.
| |
Collapse
|
23
|
|
24
|
Haase MF, Sharifi-Mood N, Lee D, Stebe KJ. In Situ Mechanical Testing of Nanostructured Bijel Fibers. ACS NANO 2016; 10:6338-44. [PMID: 27227507 DOI: 10.1021/acsnano.6b02660] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Bijels are a class of soft materials with potential for application in diverse areas including healthcare, food, energy, and reaction engineering due to their unique structural, mechanical, and transport properties. To realize their potential, means to fabricate, characterize, and manipulate bijel mechanics are needed. We recently developed a method based on solvent transfer-induced phase separation (STRIPS) that enables continuous fabrication of hierarchically structured bijel fibers from a broad array of constituent fluids and nanoparticles using a microfluidic platform. Here, we introduce an in situ technique to characterize bijel fiber mechanics at initial and final stages of the formation process within a microfluidics device. By manipulation of the hydrodynamic stresses applied to the fiber, the fiber is placed under tension until it breaks into segments. Analysis of the stress field allows fracture strength to be inferred; fracture strengths can be as high as several thousand Pa, depending on nanoparticle content. These findings broaden the potential for the use of STRIPS bijels in applications with different mechanical demands. Moreover, our in situ mechanical characterization method could potentially enable determination of properties of other soft fibrous materials made of hydrogels, capillary suspensions, colloidal gels, or high internal phase emulsions.
Collapse
Affiliation(s)
- Martin F Haase
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania , Philadelphia, Pennsylvania 19104, United States
| | - Nima Sharifi-Mood
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania , Philadelphia, Pennsylvania 19104, United States
| | - Daeyeon Lee
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania , Philadelphia, Pennsylvania 19104, United States
| | - Kathleen J Stebe
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania , Philadelphia, Pennsylvania 19104, United States
| |
Collapse
|
25
|
Haase MF, Stebe KJ, Lee D. Continuous Fabrication of Hierarchical and Asymmetric Bijel Microparticles, Fibers, and Membranes by Solvent Transfer-Induced Phase Separation (STRIPS). ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2015; 27:7065-71. [PMID: 26437299 DOI: 10.1002/adma.201503509] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Revised: 09/01/2015] [Indexed: 05/23/2023]
Abstract
Continuous generation of hierarchical and asymmetric bijels based on solvent-transfer-induced phase separation (STRIPS) is demonstrated. In STRIPS, phase separation is induced by solvent extraction from an initially homogeneous ternary mixture, and bicontinuous morphology is stabilized by inter-facial attachment of nano-particles, which are functionalized in situ. STRIPS allows stable bijel formation from a wide variety of liquids and particles.
Collapse
Affiliation(s)
- Martin F Haase
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Kathleen J Stebe
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Daeyeon Lee
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
| |
Collapse
|
26
|
Carmack JM, Millett PC. Numerical simulations of bijel morphology in thin films with complete surface wetting. J Chem Phys 2015; 143:154701. [PMID: 26493916 DOI: 10.1063/1.4932191] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Bijels are a relatively new class of soft materials that have many potential energy and environmental applications. In this work, simulation results of bijel evolution confined within thin films with preferential surface wetting are presented. The computational approach used is a hybrid Cahn-Hilliard/Brownian dynamics method. In the absence of suspended particles, we demonstrate that the model accurately captures the rich kinetics associated with diffusion-based surface-directed spinodal decomposition, as evidenced by comparison with previous theoretical and simulation-based studies. When chemically neutral particles are included in the films, the simulations capture surface-modified bijel formation, with stabilized domain structures comparable with the experimental observations of Composto and coworkers. Namely, two basic morphologies - bicontinuous or discrete - are seen to emerge, with direct dependence on the film thickness, particle volume fraction, and particle radius.
Collapse
Affiliation(s)
- Joseph M Carmack
- Department of Mechanical Engineering, University of Arkansas, Fayetteville, Arkansas 72701, USA
| | - Paul C Millett
- Department of Mechanical Engineering, University of Arkansas, Fayetteville, Arkansas 72701, USA
| |
Collapse
|
27
|
Yang Y, Fei H, Ruan G, Li L, Wang G, Kim ND, Tour JM. Carbon-Free Electrocatalyst for Oxygen Reduction and Oxygen Evolution Reactions. ACS APPLIED MATERIALS & INTERFACES 2015; 7:20607-20611. [PMID: 26320368 DOI: 10.1021/acsami.5b04887] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A nanoporous Ag-embedded SnO2 thin film was fabricated by anodic treatment of electrodeposited Ag-Sn alloy layers. The ordered nanoporous structure formed by anodization played a key role in enhancing the electrocatalytic performance of the Ag-embedded SnO2 layer in several ways: (1) the roughness factor of the thin film is greatly increased from 23 in the compact layer to 145 in the nanoporous layer, creating additional active sites that are involved in oxygen electrochemical reactions; (2) a trace amount of Ag (∼1.7 at %, corresponding to a Ag loading of ∼3.8 μg cm(-2)) embedded in the self-organized SnO2 nanoporous matrix avoids the agglomeration of nanoparticles, which is a common problem leading to the electrocatalyst deactivation; (3) the fabricated nanoporous thin film is active without additional additives or porous carbon that is usually necessary to support and stabilize the electrocatalyst. More importantly, the Ag-embedded SnO2 nanoporous thin film shows outstanding bifunctional oxygen electrochemical performance (oxygen reduction and evolution reactions) that is considered a promising candidate for use in metal-air batteries. The present technique has a wide range of applications for the preparation of other carbon-free electrocatalytic nanoporous films that could be useful for renewable energy production and storage applications.
Collapse
Affiliation(s)
- Yang Yang
- Department of Chemistry, ‡Smalley Institute for Nanoscale Science and Technology, §Department of Materials Science and NanoEngineering, Rice University , 6100 Main Street, Houston, Texas 77005, United States
| | - Huilong Fei
- Department of Chemistry, ‡Smalley Institute for Nanoscale Science and Technology, §Department of Materials Science and NanoEngineering, Rice University , 6100 Main Street, Houston, Texas 77005, United States
| | - Gedeng Ruan
- Department of Chemistry, ‡Smalley Institute for Nanoscale Science and Technology, §Department of Materials Science and NanoEngineering, Rice University , 6100 Main Street, Houston, Texas 77005, United States
| | - Lei Li
- Department of Chemistry, ‡Smalley Institute for Nanoscale Science and Technology, §Department of Materials Science and NanoEngineering, Rice University , 6100 Main Street, Houston, Texas 77005, United States
| | - Gunuk Wang
- Department of Chemistry, ‡Smalley Institute for Nanoscale Science and Technology, §Department of Materials Science and NanoEngineering, Rice University , 6100 Main Street, Houston, Texas 77005, United States
| | - Nam Dong Kim
- Department of Chemistry, ‡Smalley Institute for Nanoscale Science and Technology, §Department of Materials Science and NanoEngineering, Rice University , 6100 Main Street, Houston, Texas 77005, United States
| | - James M Tour
- Department of Chemistry, ‡Smalley Institute for Nanoscale Science and Technology, §Department of Materials Science and NanoEngineering, Rice University , 6100 Main Street, Houston, Texas 77005, United States
| |
Collapse
|
28
|
Zhu C, Du D, Eychmüller A, Lin Y. Engineering Ordered and Nonordered Porous Noble Metal Nanostructures: Synthesis, Assembly, and Their Applications in Electrochemistry. Chem Rev 2015; 115:8896-943. [DOI: 10.1021/acs.chemrev.5b00255] [Citation(s) in RCA: 502] [Impact Index Per Article: 55.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Chengzhou Zhu
- School
of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164-2920, United States
| | - Dan Du
- School
of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164-2920, United States
- Key
Laboratory of Pesticide and Chemical Biology of the Ministry of Education,
College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | | | - Yuehe Lin
- School
of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164-2920, United States
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| |
Collapse
|
29
|
Yang X, Tan L, Xia L, Wood CD, Tan B. Hierarchical Porous Polystyrene Monoliths from PolyHIPE. Macromol Rapid Commun 2015; 36:1553-8. [PMID: 26178423 DOI: 10.1002/marc.201500235] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2015] [Revised: 05/28/2015] [Indexed: 11/07/2022]
Abstract
Hierarchical porous polystyrene monoliths (HCP-PolyHIPE) are obtained by hypercrosslinking poly(styrene-divinylbenzene) monoliths prepared by polymerization of high internal phase emulsions (PolyHIPEs). The hypercrosslinking is achieved using an approach known as knitting which employs formaldehyde dimethyl acetal (FDA) as an external crosslinker. Scanning electron microscopy (SEM) confirms that the macroporous structure in the original monolith is retained during the knitting process. By increasing the amount of divinylbenzene (DVB) in PolyHIPE, the BET surface area and pore volume of the HCP-PolyHIPE decrease, while the micropore size increases. BET surface areas of 196-595 m(2) g(-1) are obtained. The presence of micropores, mesopores, and macropores is confirmed from the pore size distribution. With a hierarchical porous structure, the monoliths reveal comparable gas sorption properties and potential applications in oil spill clean-up.
Collapse
Affiliation(s)
- Xinjia Yang
- Key Laboratory for Large-Format Battery Materials and System, 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, China
| | - Liangxiao Tan
- Key Laboratory for Large-Format Battery Materials and System, 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, China
| | - Lingling Xia
- Key Laboratory for Large-Format Battery Materials and System, 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, China
| | - Colin D Wood
- CSIRO Manufacturing Flagship, Clayton, VIC, 3168, Australia
| | - Bien Tan
- Key Laboratory for Large-Format Battery Materials and System, 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, China
| |
Collapse
|
30
|
Qu B, Lu X, Wu Y, You X, Xu X. Synthesis of copper micro-rods with layered nano-structure by thermal decomposition of the coordination complex Cu(BTA)2. NANOSCALE RESEARCH LETTERS 2015; 10:42. [PMID: 25852339 PMCID: PMC4384981 DOI: 10.1186/s11671-015-0769-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Accepted: 01/19/2015] [Indexed: 06/04/2023]
Abstract
Porous metallic copper was successfully prepared by a simple thermal decomposition strategy. A coordination compound of Cu(BTA)2 with the morphology of micro-rod crystal was synthesized as the precursor. The precursor to copper transformation was performed and annealed at 600°C with the shape preserved. The copper micro-rods are assembled from unique thin lamellar layers, each with the thickness of approximately 200 nm and nano-pores of approximately 20 to 100 nm. This morphology is highly related to the crystal structure of the precursor. The mechanism of the morphology formation is proposed, which would be able to offer a guideline toward porous metals with controllable macro/micro/nano-structures by the precursor crystal growth and design.
Collapse
Affiliation(s)
- Botao Qu
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093 People’s Republic of China
| | - Xinrong Lu
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093 People’s Republic of China
| | - Yan Wu
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093 People’s Republic of China
| | - Xiaozeng You
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093 People’s Republic of China
| | - Xiangxing Xu
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093 People’s Republic of China
| |
Collapse
|
31
|
Cai D, Clegg PS. Stabilizing bijels using a mixture of fumed silica nanoparticles. Chem Commun (Camb) 2015; 51:16984-7. [DOI: 10.1039/c5cc07346d] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We demonstrate the fabrication of bicontinuous pickering emulsions (bijels) using “off the shelf” particles.
Collapse
Affiliation(s)
- Dongyu Cai
- School of Physics and Astronomy
- University of Edinburgh
- Edinburgh
- UK
| | - Paul S. Clegg
- School of Physics and Astronomy
- University of Edinburgh
- Edinburgh
- UK
| |
Collapse
|
32
|
Yeganeh JK, Goharpey F, Moghimi E, Petekidis G, Foudazi R. Controlling the kinetics of viscoelastic phase separation through self-assembly of spherical nanoparticles or block copolymers. SOFT MATTER 2014; 10:9270-9280. [PMID: 25327550 DOI: 10.1039/c4sm01499e] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Viscoelastic phase separation (VPS) can produce a network structure of the minor phase, which needs to be stabilized for designing a heterogeneous structure with desired mechanical and electrical functions. In this work, we investigate the stabilization of the VPS-induced network structure in a dynamically asymmetric PS/PVME blend by incorporation of a SEBS-g-MA block copolymer or dimethyldichlorosilane modified nanosilica. The addition of SEBS-g-MA retards the volume shrinking process and slows down the kinetics of phase separation due to its localization at the PS/PVME interfaces. Consequently, in the later stage of VPS, phase inversion occurs at longer times with respect to the neat blend due to the decreased interfacial tension. In contrast, hydrophobic nanoparticles self-assemble in the bulk of PS-rich phase and restrain the dynamics of polymer chains enhancing the dynamic asymmetry of the system. The efficiency of nanoparticles in controlling the kinetics of phase separation is found to be superior compared to block copolymer-based compatibilizers indicating the significance of chain dynamics. Moreover, beyond a critical nanoparticle volume fraction, phase separation is pinned due to particle percolation within the PS-rich phase, yielding a kinetically trapped VPS-induced network structure.
Collapse
|
33
|
Helgeson ME, Gao Y, Moran SE, Lee J, Godfrin M, Tripathi A, Bose A, Doyle PS. Homogeneous percolation versus arrested phase separation in attractively-driven nanoemulsion colloidal gels. SOFT MATTER 2014; 10:3122-3133. [PMID: 24695862 DOI: 10.1039/c3sm52951g] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We elucidate mechanisms for colloidal gelation of attractive nanoemulsions depending on the volume fraction (ϕ) of the colloid. Combining detailed neutron scattering, cryo-transmission electron microscopy and rheological measurements, we demonstrate that gelation proceeds by either of two distinct pathways. For ϕ sufficiently lower than 0.23, gels exhibit homogeneous fractal microstructure, with a broad gel transition resulting from the formation and subsequent percolation of droplet-droplet clusters. In these cases, the gel point measured by rheology corresponds precisely to arrest of the fractal microstructure, and the nonlinear rheology of the gel is characterized by a single yielding process. By contrast, gelation for ϕ sufficiently higher than 0.23 is characterized by an abrupt transition from dispersed droplets to dense clusters with significant long-range correlations well-described by a model for phase separation. The latter phenomenon manifests itself as micron-scale "pores" within the droplet network, and the nonlinear rheology is characterized by a broad yielding transition. Our studies reinforce the similarity of nanoemulsions to solid particulates, and identify important qualitative differences between the microstructure and viscoelastic properties of colloidal gels formed by homogeneous percolation and those formed by phase separation.
Collapse
Affiliation(s)
- Matthew E Helgeson
- Department of Chemical Engineering, University of California Santa Barbara, Santa Barbara, CA 93117, USA.
| | | | | | | | | | | | | | | |
Collapse
|
34
|
Lee MN, Santiago-Cordoba MA, Hamilton CE, Subbaiyan NK, Duque JG, Obrey KAD. Developing Monolithic Nanoporous Gold with Hierarchical Bicontinuity Using Colloidal Bijels. J Phys Chem Lett 2014; 5:809-812. [PMID: 26274071 DOI: 10.1021/jz5001962] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We report a universal platform for the synthesis of monolithic porous gold materials with hierarchical bicontinuous morphology and combined macro- and mesoporosity using a synergistic combination of nanocasting and chemical dealloying. This robust and accessible approach offers a new design paradigm for the parallel optimization of active surface area and mass transport in porous metal electrodes.
Collapse
Affiliation(s)
| | | | | | - Navaneetha K Subbaiyan
- ‡Physical Chemistry and Applied Spectroscopy, Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Juan G Duque
- ‡Physical Chemistry and Applied Spectroscopy, Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | | |
Collapse
|
35
|
Abstract
Templating is one of the most important techniques for the controlled synthesis of nanostructured materials. This powerful tool uses a pre-existing guide with desired nanoscale features to direct the formation of nanomaterials into forms that are otherwise difficult to obtain. As a result, templated synthesis is capable of producing nanostructures with unique structures, morphologies and properties. In this review, we summarize the general principles of templated synthesis and cover recent developments in this area. As a wide variety of synthesis techniques are utilized to produce nanomaterials using template-based methods, the discussion is organized around the various types of common templates. We examine the use of both physical and chemical hard colloidal templates, soft templates, and other non-colloidal templates, followed by our perspective on the state of the field and potential future directions.
Collapse
Affiliation(s)
- Yiding Liu
- Department of Chemistry, University of California, Riverside, CA 92521, USA
| | | | | |
Collapse
|
36
|
Li X, Yao K, Lu W, Wang J. Facile interfacial synthesis of gold micro/nanostructures and their applications for efficient surface enhanced Raman scattering. CrystEngComm 2013. [DOI: 10.1039/c2ce26673c] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
37
|
Jin R, Xing Y, Yu X, Sun S, Yu D, Wang F, Wu W, Song S. Facile Synthesis of Well-Dispersed Silver Nanoparticles on Hierarchical Flower-like Ni3Si2O5(OH)4with a High Catalytic Activity towards 4-Nitrophenol Reduction. Chem Asian J 2012; 7:2955-61. [DOI: 10.1002/asia.201200791] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2012] [Indexed: 11/08/2022]
|
38
|
Jones BH, Lodge TP. Nanocasting nanoporous inorganic and organic materials from polymeric bicontinuous microemulsion templates. Polym J 2012. [DOI: 10.1038/pj.2011.136] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
39
|
Li Z, Mi L, Chen W, Hou H, Liu C, Wang H, Zheng Z, Shen C. Three-dimensional CuS hierarchical architectures as recyclable catalysts for dye decolorization. CrystEngComm 2012. [DOI: 10.1039/c2ce00018k] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
40
|
Ravetti-Duran R, Blin JL, Stébé MJ, Castel C, Pasc A. Tuning the morphology and the structure of hierarchical meso–macroporous silica by dual templating with micelles and solid lipid nanoparticles (SLN). ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm35004a] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|
41
|
Jones BH, Lodge TP. Hierarchically structured materials from block polymer confinement within bicontinuous microemulsion-derived nanoporous polyethylene. ACS NANO 2011; 5:8914-8927. [PMID: 21992221 DOI: 10.1021/nn203096x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The self-assembly behavior of block polymers under strong two-dimensional and three-dimensional confinement has been well-studied in the past decade. Confinement effects enable access to a large suite of morphologies not typically observed in the bulk. We have used nanoporous polyethylene, derived from a polymeric bicontinuous microemulsion, as a novel template for the confinement of several different cylinder-forming block polymer systems: poly(isoprene-b-2-vinylpyridine), poly(styrene-b-isoprene), and poly(isoprene-b-dimethylsiloxane). The resultant materials exhibit unique hierarchical arrangements of structure with two distinct length scales. First, the polyethylene template imparts a disordered, microemulsion-like periodicity between bicontinuous polyethylene and block polymer networks with sizes on the order of 100 nm. Second, the block polymer networks display internal periodic arrangements produced by the spontaneous segregation of their incompatible constituents. The microphase-separated morphologies observed are similar to those previously reported for confinement of block polymers in cylindrical pores. However, at present, the morphologies are spatially variant in a complex manner, due to the three-dimensionally interconnected nature of the confining geometry and its distribution in pore sizes. We have further exploited the unique structure of the polyethylene template to generate new hierarchically structured porous monoliths. Poly(isoprene-b-2-vinylpyridine) is used as a model system in which the pyridine block is cross-linked, post-infiltration, and the polyethylene template is subsequently extracted. The resultant materials possess a three-dimensionally continuous pore network, of which the pore walls retain the unique, microphase-separated morphology of the confined block polymer.
Collapse
Affiliation(s)
- Brad H Jones
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | | |
Collapse
|