1
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Greaney PA, Hosseini SA, de Sousa Oliveira L, Davies A, Neophytou N. Super-Suppression of Long-Wavelength Phonons in Constricted Nanoporous Geometries. Nanomaterials (Basel) 2024; 14:795. [PMID: 38727389 PMCID: PMC11085507 DOI: 10.3390/nano14090795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Revised: 04/27/2024] [Accepted: 04/29/2024] [Indexed: 05/12/2024]
Abstract
In a typical semiconductor material, the majority of the heat is carried by long-wavelength, long-mean-free-path phonons. Nanostructuring strategies to reduce thermal conductivity, a promising direction in the field of thermoelectrics, place scattering centers of size and spatial separation comparable to the mean free paths of the dominant phonons to selectively scatter them. The resultant thermal conductivity is in most cases well predicted using Matthiessen's rule. In general, however, long-wavelength phonons are not as effectively scattered as the rest of the phonon spectrum. In this work, using large-scale molecular-dynamics simulations, non-equilibrium Green's function simulations, and Monte Carlo simulations, we show that specific nanoporous geometries that create narrow constrictions in the passage of phonons lead to anticorrelated heat currents in the phonon spectrum. This effect results in super-suppression of long-wavelength phonons due to heat trapping and reductions in the thermal conductivity to values well below those predicted by Matthiessen's rule.
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Affiliation(s)
- P. Alex Greaney
- Department of Mechanical Engineering, University of California Riverside, Riverside, CA 92521, USA;
| | - S. Aria Hosseini
- Department of Mechanical Engineering, University of California Riverside, Riverside, CA 92521, USA;
| | | | - Alathea Davies
- Department of Chemistry, University of Wyoming, Laramie, WY 82071, USA; (L.d.S.O.); (A.D.)
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2
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Castelli F, Consolati G. Modelling Annihilation Properties of Positronium Confined in Nanoporous Materials: A Review. Int J Mol Sci 2024; 25:3692. [PMID: 38612506 PMCID: PMC11011886 DOI: 10.3390/ijms25073692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 03/19/2024] [Accepted: 03/22/2024] [Indexed: 04/14/2024] Open
Abstract
Positronium (Ps) is a valuable probe to investigate nanometric or sub-nanometric cavities in non-metallic materials, where Ps can be confined. Accessible experimental measurements concern the lifetime of trapped Ps, which is largely influenced by pick-off processes, depending on the size of the cavity as well as on the density of the electrons belonging to the surface of the host trap. Another relevant physical quantity is the contact density, that is the electron density at the positron position, which is usually found to be well below the vacuum value. Here, we review the principal models that have been formulated to account and explain for these physical properties of confined Ps. Starting with models, treating Ps as a single particle formulated essentially to study pick-off, we go on to describe more refined two-particle models because a two-body model is the simplest approach able to describe any change in the contact density, observed in many materials. Finally, we consider a theory of Ps annihilation in nanometric voids in which the exchange correlations between the electron of Ps and the outer electrons play a fundamental role. This theory is not usually taken into account in the literature, but it has to be considered for a correct theory of pick-off annihilation processes.
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Affiliation(s)
- Fabrizio Castelli
- Department of Physics “Aldo Pontremoli”, Università degli Studi di Milano, Via Celoria 16, 20133 Milano, Italy
- Istituto Nazionale di Fisica Nucleare, Sezione di Milano, Via Celoria 16, 20133 Milano, Italy;
| | - Giovanni Consolati
- Istituto Nazionale di Fisica Nucleare, Sezione di Milano, Via Celoria 16, 20133 Milano, Italy;
- Department of Aerospace Science and Technology, Politecnico di Milano, Via La Masa 34, 20156 Milano, Italy
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3
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Hayashi T, Kikuchi M, Murase N, Matsuno T, Sugimura N, Kuroda K, Shimojima A. Hexagonal Prismatic Siloxanes Functionalized with Organosilyl Groups as Building Blocks of Nanoporous Materials. Chemistry 2024; 30:e202304080. [PMID: 38200698 DOI: 10.1002/chem.202304080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 12/28/2023] [Accepted: 01/10/2024] [Indexed: 01/12/2024]
Abstract
Utilization of well-defined siloxane molecules allows for the construction of functional siloxane-based nanoporous materials based on the molecular design. Herein, a novel class of siloxane-based porous materials is synthesized via cross-linking of dimethylsilyl- and dimethylvinylsilyl-functionalized cage siloxanes with double-6-ring (D6R) geometry. Compared with the conventional double-4-ring cage siloxane, this study highlights the characteristics of D6R siloxanes as building blocks, demonstrating their high surface area and chemical stability. Furthermore, density functional theory calculations show their unique cation encapsulation ability.
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Affiliation(s)
- Taiki Hayashi
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo, 169-8555, Japan
| | - Miharu Kikuchi
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo, 169-8555, Japan
| | - Nanako Murase
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo, 169-8555, Japan
| | - Takamichi Matsuno
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo, 169-8555, Japan
- Kagami Memorial Research Institute for Materials Science and Technology, Waseda University, 2-8-26 Nishiwaseda, Shinjuku-ku, Tokyo, 169-0051, Japan
- Waseda Research Institute for Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo, 169-8555, Japan
| | - Natsuhiko Sugimura
- Materials Characterization Central Laboratory, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo, 169-8555, Japan
| | - Kazuyuki Kuroda
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo, 169-8555, Japan
- Kagami Memorial Research Institute for Materials Science and Technology, Waseda University, 2-8-26 Nishiwaseda, Shinjuku-ku, Tokyo, 169-0051, Japan
| | - Atsushi Shimojima
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo, 169-8555, Japan
- Kagami Memorial Research Institute for Materials Science and Technology, Waseda University, 2-8-26 Nishiwaseda, Shinjuku-ku, Tokyo, 169-0051, Japan
- Waseda Research Institute for Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo, 169-8555, Japan
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4
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Bushuev YG, Grosu Y, Chorążewski M. Spontaneous Dipole Reorientation in Confined Water and Its Effect on Wetting/Dewetting of Hydrophobic Nanopores. ACS Appl Mater Interfaces 2024; 16:7604-7616. [PMID: 38300737 PMCID: PMC10875646 DOI: 10.1021/acsami.3c17272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 01/10/2024] [Accepted: 01/16/2024] [Indexed: 02/03/2024]
Abstract
The properties of nanoconfined fluids are important for a broad range of natural and engineering systems. In particular, wetting/dewetting of hydrophobic nanoporous materials is crucial due to their broad applicability for molecular separation and liquid purification; energy storage, conversion, recuperation, and dissipation; for catalysis, chromatography, and so on. In this work, a rapid, orchestrated, and spontaneous dipole reorientation was observed in hydrophobic nanotubes of various pore sizes d (7.9-16.5 Å) via simulations. This phenomenon leads to the fragmentation of water clusters in the narrow nanopores (d = 7.9, 10 Å) and strongly affects dewetting through cluster repulsion. The cavitation in these pores has an electrostatic origin. The dependence of hydrogen-bonded network properties on the tube aperture is obtained and is used to explain wetting (intrusion)-dewetting (extrusion) hysteresis. Computer simulations and experimental data demonstrate that d equals ca. 12.5 Å is a threshold between a nonhysteretic (spring) behavior, where intrusion-extrusion is reversible, and a hysteretic one (shock absorber), where hysteresis is prominent. This work suggests that water clustering and the electrostatic nature of cavitation are important factors that can be effectively exploited for controlling the wetting/dewetting of nanoporous materials.
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Affiliation(s)
- Yuriy G. Bushuev
- Institute
of Chemistry, University of Silesia in Katowice, Szkolna 9 Street, 40-006 Katowice, Poland
| | - Yaroslav Grosu
- Institute
of Chemistry, University of Silesia in Katowice, Szkolna 9 Street, 40-006 Katowice, Poland
- Centre
for Cooperative Research on Alternative Energies (CIC EnergiGUNE), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein
48, Vitoria, Gasteiz 01510, Spain
| | - Mirosław Chorążewski
- Institute
of Chemistry, University of Silesia in Katowice, Szkolna 9 Street, 40-006 Katowice, Poland
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5
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Wu KY, Brister D, Bélanger P, Tran SD. Exploring the Potential of Nanoporous Materials for Advancing Ophthalmic Treatments. Int J Mol Sci 2023; 24:15599. [PMID: 37958583 PMCID: PMC10650608 DOI: 10.3390/ijms242115599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 10/23/2023] [Accepted: 10/23/2023] [Indexed: 11/15/2023] Open
Abstract
The landscape of ophthalmology is undergoing significant transformations, driven by technological advancements and innovations in materials science. One of the advancements in this evolution is the application of nanoporous materials, endowed with unique physicochemical properties ideal for a variety of ophthalmological applications. Characterized by their high surface area, tunable porosity, and functional versatility, these materials have the potential to improve drug delivery systems and ocular devices. This review, anchored by a comprehensive literature focusing on studies published within the last five years, examines the applications of nanoporous materials in ocular drug delivery systems (DDS), contact lenses, and intraocular lenses. By consolidating the most current research, this review aims to serve as a resource for clinicians, researchers, and material scientists engaged in the rapidly evolving field of ophthalmology.
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Affiliation(s)
- Kevin Y. Wu
- Department of Surgery—Division of Ophthalmology, University of Sherbrooke, Sherbrooke, QC J1G 2E8, Canada; (K.Y.W.)
| | - Danielle Brister
- College of Public Health, National Taiwan University (NTU), Taipei 106319, Taiwan
| | - Paul Bélanger
- Department of Surgery—Division of Ophthalmology, University of Sherbrooke, Sherbrooke, QC J1G 2E8, Canada; (K.Y.W.)
| | - Simon D. Tran
- Faculty of Dental Medicine and Oral Health Sciences, McGill University, Montreal, QC H3A 1G1, Canada
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6
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Ju J, Hayward RC. Cocontinuous Nanostructures by Microphase Separation of Statistically Cross-Linked Polystyrene/Poly(2-vinylpyridine) Networks. ACS Appl Mater Interfaces 2023; 15:49633-49641. [PMID: 37843430 DOI: 10.1021/acsami.3c10985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2023]
Abstract
Cocontinuous polymeric nanostructures have drawn considerable attention due to their ability to combine distinct, percolation-dependent properties of two different polymer domains. Randomly end-linked copolymer networks (RECNs) have previously been shown to support the formation of disordered cocontinuous nanostructures across wide composition windows in a robust way. However, achieving highly efficient linking of telechelic polymers with excellent end-group fidelity often requires complex synthetic routes. As an alternative, we study here statistically cross-linked copolymer networks (SCCNs) composed of polystyrene and poly(2-vinylpyridine) (PS and P2VP) with cross-linkable allyl pendent groups that are conveniently synthesized by controlled radical copolymerization. Via selective extraction of P2VP, coupled with gravimetry, small-angle X-ray scattering, and electron microscopy, we find disordered cocontinuous phases across wide composition ranges (up to ≈ 35 wt %), approaching values previously determined for RECNs. Remarkably, even for samples that appear to exhibit full percolation, a substantial fraction of P2VP (≈ 20-30 wt %) cannot be removed, which we ascribe to short strands between nearby cross-linkers that are physically embedded within PS domains. The resulting PS porous monoliths with residual surface P2VP layers enable facile surface modification to resist protein adsorption and templating of porous gold nanostructures.
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Affiliation(s)
- Jaechul Ju
- Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80303, United States
| | - Ryan C Hayward
- Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80303, United States
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7
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Zhang L, Gonçalves AAS, Jaroniec M. Synthesis of nanoporous carbonaceous materials at lower temperatures. Front Chem 2023; 11:1277826. [PMID: 37901162 PMCID: PMC10606552 DOI: 10.3389/fchem.2023.1277826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Accepted: 10/02/2023] [Indexed: 10/31/2023] Open
Abstract
Nanoporous carbonaceous materials are ideal ingredients in various industrial products due to their large specific surface area. They are typically prepared by post-synthesis activation and templating methods. Both methods require the input of large amounts of energy to sustain thermal treatment at high temperatures (typically >600°C), which is clearly in violation of the green-chemistry principles. To avoid this issue, other strategies have been developed for the synthesis of carbonaceous materials at lower temperatures (<600°C). This mini review is focused on three strategies suitable for processing carbons at lower temperatures, namely, hydrothermal carbonization, in situ hard templating method, and mechanically induced self-sustaining reaction. Typical procedures of these strategies are demonstrated by using recently reported examples. At the end, some problems associated with the strategies and potential solutions are discussed.
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Affiliation(s)
- Liping Zhang
- Faculty of Materials Science, Shenzhen MSU-BIT University, Shenzhen, China
| | | | - Mietek Jaroniec
- Department of Chemistry and Biochemistry, Kent State University, Kent, OH, United States
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8
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Gao W, Sheng L, Chen J, Gong F, Tang Z, Yin Q, Yang K, Tu Z, Li Y, Wang L, Wang J, Tang Y, Xu H, Wang C, He X. Converting Nafion into Li + -Conductive Nanoporous Materials. Small 2023; 19:e2300697. [PMID: 37144437 DOI: 10.1002/smll.202300697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 04/16/2023] [Indexed: 05/06/2023]
Abstract
Sulfonated polymers have long been used as proton-conducting materials in fuel cells, and their ionic transport features are highly attractive for electrolytes in lithium-ion/metal batteries (LIBs/LMBs). However, most studies are still based on a preconceived notion of using them directly as polymeric ionic carriers, which precludes exploring them as nanoporous media to construct efficient lithium ions (Li+ ) transport network. Here, effective Li+ -conducting channels realized by swelling nanofibrous Nafion is demonstrated, which is a classical sulfonated polymer in fuel cells. The sulfonic acid groups, interact with LIBs liquid electrolytes to form porous ionic matrix of Nafion and assist partial desolvation of Li+ -solvates to further enhance Li+ transport. Li-symmetric cells and Li-metal full cells (Li4 Ti5 O12 or high-voltage LiNi0.6 Co0.2 Mn0.2 O2 as a cathode) with such membrane show excellent cycling performance and stabilized Li-metal anode. The finding provides a strategy to convert the vast sulfonated polymer family into efficient Li+ electrolyte, promoting the development of high-energy-density LMBs.
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Affiliation(s)
- Weitao Gao
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084, P. R. China
| | - Li Sheng
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084, P. R. China
| | - Jia Chen
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084, P. R. China
| | - Fan Gong
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084, P. R. China
- State Key Laboratory of Advanced Design and Manufacture for Vehicle Body, Hunan University, Changsha, 410082, P. R. China
| | - Zhuozhuo Tang
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084, P. R. China
| | - Qinan Yin
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084, P. R. China
- Key Laboratory of Metallurgical Equipment and Control Technology, Ministry of Education, Wuhan University of Science and Technology, Wuhan, 430081, P. R. China
| | - Kai Yang
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084, P. R. China
| | - Ziqiang Tu
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084, P. R. China
- Key Laboratory of Metallurgical Equipment and Control Technology, Ministry of Education, Wuhan University of Science and Technology, Wuhan, 430081, P. R. China
| | - Yang Li
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084, P. R. China
- Key Laboratory of Metallurgical Equipment and Control Technology, Ministry of Education, Wuhan University of Science and Technology, Wuhan, 430081, P. R. China
| | - Li Wang
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084, P. R. China
| | - Jianlong Wang
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084, P. R. China
| | - Yaping Tang
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084, P. R. China
| | - Hong Xu
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084, P. R. China
| | - Cheng Wang
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084, P. R. China
| | - Xiangming He
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084, P. R. China
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9
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Oliva G, Fiorillo AS, Islam SK, Pullano SA. Detection of Propionic Acids Trapped in Thin Zeolite Layer Using Thermal Desorption Analysis. Sensors (Basel) 2023; 23:7352. [PMID: 37687805 PMCID: PMC10490041 DOI: 10.3390/s23177352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 08/21/2023] [Accepted: 08/22/2023] [Indexed: 09/10/2023]
Abstract
Volatile organic compounds (VOCs) have recently received considerable attention for the analysis and monitoring of different biochemical processes in biological systems such as humans, plants, and microorganisms. The advantage of using VOCs to gather information about a specific process is that they can be extracted using different types of samples, even at low concentrations. Therefore, VOC levels represent the fingerprints of specific biochemical processes. The aim of this work was to develop a sensor based on a photoionization detector (PID) and a zeolite layer, used as an alternative analytic separation technique for the analysis of VOCs. The identification of VOCs occurred through the evaluation of the emissive profile during the thermal desorption phase, using a stainless-steel chamber for analysis. Emission profiles were evaluated using a double exponential mathematical model, which fit well if compared with the physical system, describing both the evaporation and diffusion processes. The results showed that the zeolite layer was selective for propionic acid molecules if compared to succinic acid molecules, showing linear behavior even at low concentrations. The process to define the optimal adsorption time between the propionic acid molecules was performed in the range of 5 to 60 min, followed by a thermal desorption process at 100 °C. An investigation of the relationship between the evaporation and diffusion rates showed that the maximum concentration of detected propionic acid molecules occurred in 15 min. Other analyses were performed to study how the concentration of VOCs depended on the desorption temperature and the volume of the analysis chamber. For this purpose, tests were performed using three analysis chambers with volumes of 25 × 10-6, 50 × 10-6, and 150 × 10-6 m3 at three different desorption temperatures of 20 °C, 50 °C, and 100 °C, respectively. The results demonstrated that the evaporation rate of the VOCs increased rapidly with an increasing temperature, while the diffusion rate remained almost constant and was characterized by a slow decay time. The diffusion ratio increased when using a chamber with a larger volume. These results highlight the capabilities of this alternative technique for VOC analysis, even for samples with low concentrations. The coupling of a zeolite layer and a PID improves the detection selectivity in portable devices, demonstrating the feasibility of extending its use to a wide range of new applications.
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Affiliation(s)
- Giuseppe Oliva
- Biomedical Applications Technologies & Sensors (BATS) Laboratory, Department of Health Sciences, Magna Græcia University of Catanzaro, Viale Europa, 88100 Catanzaro, Italy;
| | - Antonino S. Fiorillo
- Biomedical Applications Technologies & Sensors (BATS) Laboratory, Department of Health Sciences, Magna Græcia University of Catanzaro, Viale Europa, 88100 Catanzaro, Italy;
| | - Syed Kamrul Islam
- Department of Electrical Engineering and Computer Science, University of Missouri, Columbia, MO 65211, USA;
| | - Salvatore A. Pullano
- Biomedical Applications Technologies & Sensors (BATS) Laboratory, Department of Health Sciences, Magna Græcia University of Catanzaro, Viale Europa, 88100 Catanzaro, Italy;
- Department of Electrical Engineering and Computer Science, University of Missouri, Columbia, MO 65211, USA;
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10
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Sims MB, Goetze JW, Gorbea GD, Gdowski ZM, Lodge TP, Bates FS. Photocrosslinkable Polymeric Bicontinuous Microemulsions. ACS Appl Mater Interfaces 2023; 15:10044-10052. [PMID: 36774627 DOI: 10.1021/acsami.2c22927] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
We present an approach to photocrosslink bicontinuous microemulsions derived from ternary blends of poly(methoxyethyl acrylate) (PM, Mn = 4200 g/mol), poly(hexyl methacrylate-co-coumarin methacrylate) (PHC, Mn = 6800 g/mol), and PM-b-PHC diblock polymer (Mn = 19,400 g/mol) in a phase-selective manner, enabling structural characterization at an unprecedented level of detail. This strategy utilizes the [2 + 2] photodimerization reaction of coumarin derivatives to covalently crosslink blends without the use of harsh reagents or disruptive thermal treatment, thus preserving the intricate network structure throughout curing. The resulting crosslinked bicontinuous microemulsions exhibited rubbery behavior at elevated temperatures, achieving an elastic shear modulus of nearly 1 MPa at 70 °C, owing to the presence of the three-dimensional co-continuous network morphology. The dimensional stabilization afforded by crosslinking further allowed the microstructure to be directly imaged by scanning electron microscopy and atomic force microscopy. Contrary to recent theoretical findings, the BμE appears in a wide temperature and compositional window, suggesting that it is a robust feature of these blends. As a proof of concept demonstrating both the utility of bicontinuous microemulsion-derived materials and versatility of this strategy toward broader applications in energy storage and transport, the uncrosslinked portion of a cured blend was extracted by washing and replaced with an ionic liquid; the resultant heterogeneous solid electrolyte exhibited a room-temperature conductivity of 2 mS/cm, approximately one-quarter that of the pure ionic liquid.
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Affiliation(s)
- Michael B Sims
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Joshua W Goetze
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Gabriela Diaz Gorbea
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Zachary M Gdowski
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Timothy P Lodge
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Frank S Bates
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
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11
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Bushuev YG, Grosu Y, Chorążewski M, Meloni S. Effect of the Topology on Wetting and Drying of Hydrophobic Porous Materials. ACS Appl Mater Interfaces 2022; 14:30067-30079. [PMID: 35730678 PMCID: PMC9264313 DOI: 10.1021/acsami.2c06039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Establishing molecular mechanisms of wetting and drying of hydrophobic porous materials is a general problem for science and technology within the subcategories of the theory of liquids, chromatography, nanofluidics, energy storage, recuperation, and dissipation. In this article, we demonstrate a new way to tackle this problem by exploring the effect of the topology of pure silica nanoparticles, nanotubes, and zeolites. Using molecular dynamics simulations, we show how secondary porosity promotes the intrusion of water into micropores and affects the hydrophobicity of materials. It is demonstrated herein that for nano-objects, the hydrophobicity can be controlled by changing the ratio of open to closed nanometer-sized lateral pores. This effect can be exploited to produce new materials for practical applications when the hydrophobicity needs to be regulated without significantly changing the chemistry or structure of the materials. Based on these simulations and theoretical considerations, for pure silica zeolites, we examined and then classified the experimental database of intrusion pressures, thus leading to the prediction of any zeolite's intrusion pressure. We show a correlation between the intrusion pressure and the ratio of the accessible pore surface area to total pore volume. The correlation is valid for some zeolites and mesoporous materials. It can facilitate choosing prospective candidates for further investigation and possible exploitation, especially for energy storage, recuperation, and dissipation.
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Affiliation(s)
- Yuriy G. Bushuev
- Institute
of Chemistry, University of Silesia in Katowice, Szkolna 9 street, 40-006 Katowice, Poland
| | - Yaroslav Grosu
- Centre
for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein
48, 01510 Vitoria-Gasteiz, Spain
| | - Mirosław
A. Chorążewski
- Institute
of Chemistry, University of Silesia in Katowice, Szkolna 9 street, 40-006 Katowice, Poland
| | - Simone Meloni
- Dipartimento
di Scienze Chimiche, Farmaceutiche ed Agrarie
(DOCPAS), Università degli Studi di Ferrara (Unife), Via Luigi Borsari 46, I-44121 Ferrara, Italy
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12
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Zajdel P, Madden DG, Babu R, Tortora M, Mirani D, Tsyrin NN, Bartolomé L, Amayuelas E, Fairen-Jimenez D, Lowe AR, Chorążewski M, Leao JB, Brown CM, Bleuel M, Stoudenets V, Casciola CM, Echeverría M, Bonilla F, Grancini G, Meloni S, Grosu Y. Turning Molecular Springs into Nano-Shock Absorbers: The Effect of Macroscopic Morphology and Crystal Size on the Dynamic Hysteresis of Water Intrusion-Extrusion into-from Hydrophobic Nanopores. ACS Appl Mater Interfaces 2022; 14:26699-26713. [PMID: 35656844 PMCID: PMC9204699 DOI: 10.1021/acsami.2c04314] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 05/23/2022] [Indexed: 05/27/2023]
Abstract
Controlling the pressure at which liquids intrude (wet) and extrude (dry) a nanopore is of paramount importance for a broad range of applications, such as energy conversion, catalysis, chromatography, separation, ionic channels, and many more. To tune these characteristics, one typically acts on the chemical nature of the system or pore size. In this work, we propose an alternative route for controlling both intrusion and extrusion pressures via proper arrangement of the grains of the nanoporous material. To prove the concept, dynamic intrusion-extrusion cycles for powdered and monolithic ZIF-8 metal-organic framework were conducted by means of water porosimetry and in operando neutron scattering. We report a drastic increase in intrusion-extrusion dynamic hysteresis when going from a fine powder to a dense monolith configuration, transforming an intermediate performance of the ZIF-8 + water system (poor molecular spring) into a desirable shock-absorber with more than 1 order of magnitude enhancement of dissipated energy per cycle. The obtained results are supported by MD simulations and pave the way for an alternative methodology of tuning intrusion-extrusion pressure using a macroscopic arrangement of nanoporous material.
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Affiliation(s)
- Paweł Zajdel
- Institute
of Physics, University of Silesia in Katowice, 75 Pulku Piechoty 1, 41-500 Chorzow, Poland
| | - David G. Madden
- The
Adsorption & Advanced Materials Laboratory (AML),
Department of Chemical Engineering & Biotechnology, University of Cambridge, Philippa Fawcett Drive, Cambridge CB3 0AS, U.K.
| | - Robin Babu
- The
Adsorption & Advanced Materials Laboratory (AML),
Department of Chemical Engineering & Biotechnology, University of Cambridge, Philippa Fawcett Drive, Cambridge CB3 0AS, U.K.
| | - Marco Tortora
- Dipartimento
di Ingegneria Meccanica e Aerospaziale, Sapienza Università di Roma, via Eudossiana 18, 00184 Rome, Italy
| | - Diego Mirani
- Department
of Chemistry & INSTM University of Pavia, Via Taramelli 14, Pavia I-27100, Italy
| | - Nikolay Nikolaevich Tsyrin
- Laboratory
of Thermomolecular Energetics, National
Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic
Institute”, Pr.
Peremogy 37, 03056 Kyiv, Ukraine
| | - Luis Bartolomé
- Centre for
Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Albert Einstein 48, 01510 Vitoria-Gasteiz, Spain
| | - Eder Amayuelas
- Centre for
Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Albert Einstein 48, 01510 Vitoria-Gasteiz, Spain
| | - David Fairen-Jimenez
- The
Adsorption & Advanced Materials Laboratory (AML),
Department of Chemical Engineering & Biotechnology, University of Cambridge, Philippa Fawcett Drive, Cambridge CB3 0AS, U.K.
| | - Alexander Rowland Lowe
- Institute
of Chemistry, University of Silesia in Katowice, Szkolna 9, 40-006 Katowice, Poland
| | - Mirosław Chorążewski
- Institute
of Chemistry, University of Silesia in Katowice, Szkolna 9, 40-006 Katowice, Poland
| | - Juscelino B. Leao
- NIST
Center for Neutron Research, National Institute
of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - Craig M. Brown
- NIST
Center for Neutron Research, National Institute
of Standards and Technology, Gaithersburg, Maryland 20899, United States
- Chemical
and Biochemical Department, University of
Delaware, Newark, Delaware 19716, United
States
| | - Markus Bleuel
- NIST
Center for Neutron Research, National Institute
of Standards and Technology, Gaithersburg, Maryland 20899, United States
- Department
of Materials Science and Engineering, University
of Maryland, College Park, Maryland 20742-2115, United States
| | - Victor Stoudenets
- Laboratory
of Thermomolecular Energetics, National
Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic
Institute”, Pr.
Peremogy 37, 03056 Kyiv, Ukraine
| | - Carlo Massimo Casciola
- Dipartimento
di Ingegneria Meccanica e Aerospaziale, Sapienza Università di Roma, via Eudossiana 18, 00184 Rome, Italy
| | - María Echeverría
- Centre for
Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Albert Einstein 48, 01510 Vitoria-Gasteiz, Spain
| | - Francisco Bonilla
- Centre for
Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Albert Einstein 48, 01510 Vitoria-Gasteiz, Spain
| | - Giulia Grancini
- Department
of Chemistry & INSTM University of Pavia, Via Taramelli 14, Pavia I-27100, Italy
| | - Simone Meloni
- Dipartimento di Scienze Chimiche e Farmaceutiche
(DipSCF), Università degli Studi
di Ferrara (Unife), Via
Luigi Borsari 46, I-44121 Ferrara, Italy
| | - Yaroslav Grosu
- Centre for
Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Albert Einstein 48, 01510 Vitoria-Gasteiz, Spain
- Institute
of Chemistry, University of Silesia in Katowice, Szkolna 9, 40-006 Katowice, Poland
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13
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Bushuev YG, Grosu Y, Chora̧żewski M, Meloni S. Subnanometer Topological Tuning of the Liquid Intrusion/Extrusion Characteristics of Hydrophobic Micropores. Nano Lett 2022; 22:2164-2169. [PMID: 35258978 PMCID: PMC8949755 DOI: 10.1021/acs.nanolett.1c02140] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 02/17/2022] [Indexed: 05/27/2023]
Abstract
Intrusion (wetting)/extrusion (drying) of liquids in/from lyophobic nanoporous systems is key in many fields, including chromatography, nanofluidics, biology, and energy materials. Here we demonstrate that secondary topological features decorating main channels of porous systems dramatically affect the intrusion/extrusion cycle. These secondary features, allowing an unexpected bridging with liquid in the surrounding domains, stabilize the water stream intruding a micropore. This reduces the intrusion/extrusion barrier and the corresponding pressures without altering other properties of the system. Tuning the intrusion/extrusion pressures via subnanometric topological features represents a yet unexplored strategy for designing hydrophobic micropores. Though energy is not the only field of application, here we show that the proposed tuning approach may bring 20-75 MPa of intrusion/extrusion pressure increase, expanding the applicability of hydrophobic microporous materials.
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Affiliation(s)
- Yuriy G. Bushuev
- Institute
of Chemistry, University of Silesia in Katowice, Szkolna 9 Street, 40-006 Katowice, Poland
| | - Yaroslav Grosu
- Centre for
Cooperative Research on Alternative Energies (CIC energiGUNE), Basque
Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein 48, 01510 Vitoria-Gasteiz, Spain
| | - Mirosław
A. Chora̧żewski
- Institute
of Chemistry, University of Silesia in Katowice, Szkolna 9 Street, 40-006 Katowice, Poland
| | - Simone Meloni
- Dipartimento
di Scienze Chimiche, Farmaceutiche ed Agrarie (DOCPAS), Università degli Studi di Ferrara (Unife), Via Luigi Borsari 46, I-44121 Ferrara, Italy
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14
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Koopmann AK, Torres-Rodríguez J, Salihovic M, Schoiber J, Musso M, Fritz-Popovski G, Huesing N, Elsaesser MS. Tannin-Based Nanoscale Carbon Spherogels as Electrodes for Electrochemical Applications. ACS Appl Nano Mater 2021; 4:14115-14125. [PMID: 34977479 PMCID: PMC8713360 DOI: 10.1021/acsanm.1c03431] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Accepted: 11/19/2021] [Indexed: 05/04/2023]
Abstract
A promising route to monolithic, hollow sphere carbon assemblies based on sustainable precursors with a tailored nanostructure is presented. These carbon assemblies, recently termed carbon spherogels, are generated via a polystyrene sphere template-based sol-gel process of mimosa tannin and biomass-derived 5-(hydroxymethyl)furfural. By completely replacing petroleum-based precursors (especially toxic formaldehyde) highly porous, nanoscale carbon monoliths are obtained, which are investigated as state-of-the-art, sustainable electrode materials for energy storage. This study defines the required synthesis parameters, in particular the highly acidic initial pH and a tannin/water ratio of at least 0.05 or lower, for a successful and homogeneous generation of these biobased carbon spherogels.
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Affiliation(s)
- Ann-Kathrin Koopmann
- Department
of Chemistry and Physics of Materials, Paris-Lodron-University
of Salzburg, 5020 Salzburg, Austria
- Salzburg
Center for Smart Materials, 5020 Salzburg, Austria
| | - Jorge Torres-Rodríguez
- Department
of Chemistry and Physics of Materials, Paris-Lodron-University
of Salzburg, 5020 Salzburg, Austria
- Salzburg
Center for Smart Materials, 5020 Salzburg, Austria
| | - Miralem Salihovic
- Department
of Chemistry and Physics of Materials, Paris-Lodron-University
of Salzburg, 5020 Salzburg, Austria
| | - Juergen Schoiber
- Department
of Chemistry and Physics of Materials, Paris-Lodron-University
of Salzburg, 5020 Salzburg, Austria
| | - Maurizio Musso
- Department
of Chemistry and Physics of Materials, Paris-Lodron-University
of Salzburg, 5020 Salzburg, Austria
| | | | - Nicola Huesing
- Department
of Chemistry and Physics of Materials, Paris-Lodron-University
of Salzburg, 5020 Salzburg, Austria
- Salzburg
Center for Smart Materials, 5020 Salzburg, Austria
| | - Michael S. Elsaesser
- Department
of Chemistry and Physics of Materials, Paris-Lodron-University
of Salzburg, 5020 Salzburg, Austria
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15
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Głowniak S, Szczęśniak B, Choma J, Jaroniec M. Advances in Microwave Synthesis of Nanoporous Materials. Adv Mater 2021; 33:e2103477. [PMID: 34580939 DOI: 10.1002/adma.202103477] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 06/28/2021] [Indexed: 05/03/2023]
Abstract
Usually, porous materials are synthesized by using conventional electric heating, which can be energy- and time-consuming. Microwave heating is commonly used in many households to quickly heat food. Microwave ovens can also be used as powerful devices in the synthesis of various porous materials. The microwave-assisted synthesis offers a simple, fast, efficient, and economic way to obtain many of the advanced nanomaterials. This review summarizes the recent achievements in the microwave-assisted synthesis of diverse groups of nanoporous materials including silicas, carbons, metal-organic frameworks, and metal oxides. Microwave-assisted methods afford highly porous materials with high specific surface areas (SSAs), e.g., activated carbons with SSA ≈3100 m2 g-1 , metal-organic frameworks with SSA ≈4200 m2 g-1 , covalent organic frameworks with SSA ≈2900 m2 g-1 , and metal oxides with relatively small SSA ≈300 m2 g-1 . These methods are also successfully implemented for the preparation of ordered mesoporous silicas and carbons as well as spherically shaped nanomaterials. Most of the nanoporous materials obtained under microwave irradiation show potential applications in gas adsorption, water treatment, catalysis, energy storage, and drug delivery, among others.
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Affiliation(s)
- Sylwia Głowniak
- Institute of Chemistry, Military University of Technology, Warsaw, 00-908, Poland
| | - Barbara Szczęśniak
- Institute of Chemistry, Military University of Technology, Warsaw, 00-908, Poland
| | - Jerzy Choma
- Institute of Chemistry, Military University of Technology, Warsaw, 00-908, Poland
| | - Mietek Jaroniec
- Department of Chemistry and Biochemistry, Advanced Materials and Liquid Crystal Institute, Kent State University, Kent, OH, 44242, USA
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16
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Castelli F, Consolati G, Tanzi Marlotti G. Positronium Confined in Nanocavities: The Role of Electron Exchange Correlations. Nanomaterials (Basel) 2021; 11:2350. [PMID: 34578665 DOI: 10.3390/nano11092350] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/21/2021] [Accepted: 09/04/2021] [Indexed: 11/17/2022]
Abstract
Positronium atoms (Ps) are commonly employed as a probe to characterize nanometric or subnanometric voids or vacancies in nonmetallic materials, where Ps can end up confined. The annihilation lifetime of a trapped Ps is strongly modified by pickoff and depends on the cavity size and on the electron density in the confining cavity surface. Here, we develop a theory of the Ps annihilation in nanocavities based on the fundamental role of the exchange correlations between the Ps-electron and the outer electrons, which are not usually considered but must be considered to correctly theorize the pickoff annihilation processes. We obtain an important relation connecting the two relevant annihilation rates (for the p-Ps and the o-Ps) with the electron density, which has the property of being totally independent of the geometrical characteristics of the nanoporous medium. This general relation can be used to gather information on the electron density and on the average cavity radius of the confining medium, starting from the experimental data on PALS annihilation spectra. Moreover, by analyzing our results, we also highlight that a reliable interpretation of the PALS spectra can only be obtained if the rule of 1/3 between the intensities of p-Ps and o-Ps lifetimes can be fulfilled.
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17
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Chorążewski M, Zajdel P, Feng T, Luo D, Lowe AR, Brown CM, Leão JB, Li M, Bleuel M, Jensen G, Li D, Faik A, Grosu Y. Compact Thermal Actuation by Water and Flexible Hydrophobic Nanopore. ACS Nano 2021; 15:9048-9056. [PMID: 33982556 PMCID: PMC10537034 DOI: 10.1021/acsnano.1c02175] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Efficient and compact energy conversion is at the heart of the sustainable development of humanity. In this work it is demonstrated that hydrophobic flexible nanoporous materials can be used for thermal-to-mechanical energy conversion when coupled with water. In particular, a reversible nonhysteretic wetting-drying (contraction-expansion) cycle provoked by periodic temperature fluctuations was realized for water and a superhydrophobic nanoporous Cu2(tebpz) MOF (tebpz = 3,3',5,5'-tetraethyl-4,4'-bipyrazolate). A thermal-to-mechanical conversion efficiency of ∼30% was directly recorded by high-precision PVT-calorimetry, while the operational cycle was confirmed by in operando neutron scattering. The obtained results provide an alternative approach for compact energy conversion exploiting solid-liquid interfacial energy in nanoscopic flexible heterogeneous systems.
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Affiliation(s)
- Mirosław Chorążewski
- Institute of Chemistry, University of Silesia, Szkolna 9, 40-006 Katowice, Poland
| | - Paweł Zajdel
- Institute of Physics, University of Silesia, ul. 75 Pulku Piechoty 1, 41-500 Chorzów, Poland
| | - Tong Feng
- Department of Chemistry, Shantou University, Guangdong 515063, China
| | - Dong Luo
- College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China
| | - Alexander R Lowe
- Institute of Chemistry, University of Silesia, Szkolna 9, 40-006 Katowice, Poland
| | - Craig M Brown
- Chemical and Biochemical Department, University of Delaware, Newark, Delaware 19716, United States
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - Juscelino B Leão
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - Mian Li
- Department of Chemistry, Shantou University, Guangdong 515063, China
| | - Markus Bleuel
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
- Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742-2115, United States
| | - Grethe Jensen
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - Dan Li
- College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China
| | - Abdessamad Faik
- Materials Science, Energy and Nano-engineering Department, University Mohammed VI Polytechnic, Ben Guerir 43150, Morocco
- Centre for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein 48, 01510 Vitoria-Gasteiz, Spain
| | - Yaroslav Grosu
- Institute of Chemistry, University of Silesia, Szkolna 9, 40-006 Katowice, Poland
- Centre for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein 48, 01510 Vitoria-Gasteiz, Spain
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18
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Vazquez M, Liu M, Zhang Z, Chandresh A, Kanj AB, Wenzel W, Heinke L. Structural and Dynamic Insights into the Conduction of Lithium-Ionic-Liquid Mixtures in Nanoporous Metal-Organic Frameworks as Solid-State Electrolytes. ACS Appl Mater Interfaces 2021; 13:21166-21174. [PMID: 33905243 DOI: 10.1021/acsami.1c00366] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Metal-organic framework (MOF)-based separators in Li-ion batteries (LIBs) have the potential to improve the battery performance. The mobility and conduction of lithium and organic ionic liquids (ILs) in these materials acting as (quasi) solid-state electrolytes are crucial for the battery power output. Here, we investigate the mobility of a Li-based IL in MOF nanopores and unveil the details of the conduction mechanism by molecular dynamics (MD) simulations. A complex conductivity depending on the Li-IL loading and on the IL composition is observed. Most importantly, the presence of Li prevents the collapse of the conductivity at high IL loadings. The fully atomistic MD simulations including guest-guest and guest-host interactions elucidate the competing mechanisms: Li follows a Grotthuss-like conduction mechanism with large mobility. While at small pore fillings, the Li conduction is limited by the large distance between the anions facilitating the Grotthuss-like conduction; the conduction at high pore fillings is governed by field-induced concentration inhomogeneities. Because of the small MOF pore windows, which hinders the simultaneous passage of the large IL cations and anions in opposite directions, the IL shows field-induced MOF pore blocking and ion bunching. The regions of low anion concentration and high cation concentration represent barriers for Li, decreasing its mobility. In comparison to Li-free IL, the IL bunching effect is attenuated by the formation of charge-neutral Li-anion complexes, resulting in a tremendously increased conductivity at maximum pore filling. The exploitation of this mechanism may enhance the development of advanced batteries based on IL and nanoporous separators.
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Affiliation(s)
- Micaela Vazquez
- Karlsruhe Institute of Technology (KIT), Institute of Functional Interfaces (IFG), Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen 76344, Germany
| | - Modan Liu
- Karlsruhe Institute of Technology (KIT), Institute of Nanotechnology (INT), Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen 76344, Germany
| | - Zejun Zhang
- Karlsruhe Institute of Technology (KIT), Institute of Functional Interfaces (IFG), Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen 76344, Germany
| | - Abhinav Chandresh
- Karlsruhe Institute of Technology (KIT), Institute of Functional Interfaces (IFG), Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen 76344, Germany
| | - Anemar Bruno Kanj
- Karlsruhe Institute of Technology (KIT), Institute of Functional Interfaces (IFG), Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen 76344, Germany
| | - Wolfgang Wenzel
- Karlsruhe Institute of Technology (KIT), Institute of Nanotechnology (INT), Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen 76344, Germany
| | - Lars Heinke
- Karlsruhe Institute of Technology (KIT), Institute of Functional Interfaces (IFG), Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen 76344, Germany
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19
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Kan M, Yan ZW, Wang X, Hitt JL, Xiao L, McNeill JM, Wang Y, Zhao Y, Mallouk TE. Corrigendum: 2-Aminobenzenethiol-Functionalized Silver-Decorated Nanoporous Silicon Photoelectrodes for Selective CO 2 Reduction. Angew Chem Int Ed Engl 2021; 60:6854. [PMID: 33725424 DOI: 10.1002/anie.202101640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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20
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Abstract
In the last two decades, metal-organic frameworks (MOFs) have attracted overwhelming attention. With readily tunable structures and functionalities, MOFs offer an unprecedentedly vast degree of design flexibility from enormous number of inorganic and organic building blocks or via postsynthetic modification to produce functional nanoporous materials. A large extent of experimental and computational studies of MOFs have been focused on gas phase applications, particularly the storage of low-carbon footprint energy carriers and the separation of CO2-containing gas mixtures. With progressive success in the synthesis of water- and solvent-resistant MOFs over the past several years, the increasingly active exploration of MOFs has been witnessed for widespread liquid phase applications such as liquid fuel purification, aromatics separation, water treatment, solvent recovery, chemical sensing, chiral separation, drug delivery, biomolecule encapsulation and separation. At this juncture, the recent experimental and computational studies are summarized herein for these multifaceted liquid phase applications to demonstrate the rapid advance in this burgeoning field. The challenges and opportunities moving from laboratory scale towards practical applications are discussed.
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Affiliation(s)
- Anjaiah Nalaparaju
- Department of Chemical and Biomolecular EngineeringNational University of SingaporeSingapore117576Singapore
| | - Jianwen Jiang
- Department of Chemical and Biomolecular EngineeringNational University of SingaporeSingapore117576Singapore
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21
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Santos A, Marsal LF, Kumeria T. Editorial: Engineered Nanoporous Materials for Chemical Sensors and Biosensors. Front Chem 2020; 8:595931. [PMID: 33282841 PMCID: PMC7688623 DOI: 10.3389/fchem.2020.595931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 09/28/2020] [Indexed: 11/13/2022] Open
Affiliation(s)
- Abel Santos
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA, Australia.,Institute for Photonics and Advanced Sensing, The University of Adelaide, Adelaide, SA, Australia.,Australian Research Council (ARC) Center of Excellence for Nanoscale BioPhotonics, The University of Adelaide, Adelaide, SA, Australia
| | - Lluis F Marsal
- Department of Electronic, Electric, and Automatics Engineering, Rovira i Virgili University, Tarragona, Spain
| | - Tushar Kumeria
- School of Materials Science and Engineering, University of New South Wales, Sydney, NSW, Australia
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22
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Jorayev P, Tashov I, Rozyyev V, Nguyen TS, Dogan NA, Yavuz CT. Covalent Amine Tethering on Ketone Modified Porous Organic Polymers for Enhanced CO 2 Capture. ChemSusChem 2020; 13:6433-6441. [PMID: 33058470 DOI: 10.1002/cssc.202002190] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 10/11/2020] [Indexed: 06/11/2023]
Abstract
Effective removal of excess greenhouse gas CO2 necessitates new adsorbents that can overcome the shortcomings of the current capture methods. To achieve that, porous materials are often modified post-synthetically with reactive amine functionalities but suffer from significant surface area losses. Herein, we report a successful amine post-functionalization of a highly porous covalent organic polymer, COP-130, without losing much porosity. By varying the amine substituents, we recorded a remarkable increase in CO2 uptake and selectivity. Ketone functionality, a rarely accessible functional group for porous polymers, was inserted prior to amination and led to covalent tethering of amines. Interestingly, aminated polymers demonstrated relatively low heats of adsorption, which is useful for the rapid recyclability of materials, due to the formation of suspected intramolecular hydrogen bonding.
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Affiliation(s)
- Perman Jorayev
- Graduate School of Energy, Environment, Water and Sustainability (EEWS), Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Korea
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, CB3 0AS, UK
| | - Intizar Tashov
- Department of Chemical and Biomolecular Engineering KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Korea
| | - Vepa Rozyyev
- Graduate School of Energy, Environment, Water and Sustainability (EEWS), Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Korea
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL, 60637, USA
| | - Thien S Nguyen
- Graduate School of Energy, Environment, Water and Sustainability (EEWS), Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Korea
| | - Nesibe A Dogan
- Department of Chemical and Biomolecular Engineering KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Korea
| | - Cafer T Yavuz
- Graduate School of Energy, Environment, Water and Sustainability (EEWS), Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Korea
- Department of Chemical and Biomolecular Engineering KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Korea
- Department of Chemistry KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Korea
- KAIST Institute for the NanoCentury KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Korea
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23
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Tanabe Y, Ito Y, Sugawara K, Koshino M, Kimura S, Naito T, Johnson I, Takahashi T, Chen M. Dirac Fermion Kinetics in 3D Curved Graphene. Adv Mater 2020; 32:e2005838. [PMID: 33118240 DOI: 10.1002/adma.202005838] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 10/06/2020] [Indexed: 05/24/2023]
Abstract
3D integration of graphene has attracted attention for realizing carbon-based electronic devices. While the 3D integration can amplify various excellent properties of graphene, the influence of 3D curved surfaces on the fundamental physical properties of graphene has not been clarified. The electronic properties of 3D nanoporous graphene with a curvature radius down to 25-50 nm are systematically investigated and the ambipolar electronic states of Dirac fermions are essentially preserved in the 3D graphene nanoarchitectures, while the 3D curvature can effectively suppress the slope of the linear density of states of Dirac fermion near the Fermi level are demonstrated. Importantly, the 3D curvature can be utilized to tune the back-scattering-suppressed electrical transport of Dirac fermions and enhance both electron localization and electron-electron interaction. As a result, nanoscale curvature provides a new degree of freedom to manipulate 3D graphene electrical properties, which may pave a new way to design new 3D graphene devices with preserved 2D electronic properties and novel functionalities.
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Affiliation(s)
- Yoichi Tanabe
- Department of Applied Science, Okayama University of Science, Okayama, 700-0005, Japan
| | - Yoshikazu Ito
- Institute of Applied Physics, Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki, 305-8573, Japan
| | - Katsuaki Sugawara
- Department of Physics, Graduate School of Science, Tohoku University, Sendai, 980-8578, Japan
- Advanced Institute for Materials Research, Tohoku University, Sendai, 980-8577, Japan
| | - Mikito Koshino
- Department of Physics, Osaka University, Osaka, 560-0043, Japan
| | - Shojiro Kimura
- Institute for Materials Research, Tohoku University, Sendai, 980-8577, Japan
| | - Tomoya Naito
- Department of Physics, Graduate School of Science, The University of Tokyo, Tokyo, 113-0033, Japan
- RIKEN Nishina Center, Wako, 351-0198, Japan
| | - Isaac Johnson
- Department of Materials Science and Engineering, Hopkins Extreme Materials Institute, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Takashi Takahashi
- Advanced Institute for Materials Research, Tohoku University, Sendai, 980-8577, Japan
| | - Mingwei Chen
- Advanced Institute for Materials Research, Tohoku University, Sendai, 980-8577, Japan
- Department of Materials Science and Engineering, Hopkins Extreme Materials Institute, Johns Hopkins University, Baltimore, MD, 21218, USA
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He D, Gao Y, Yao Y, Wu L, Zhang J, Huang ZH, Wang MX. Asymmetric Supercapacitors Based on Hierarchically Nanoporous Carbon and ZnCo 2O 4 From a Single Biometallic Metal-Organic Frameworks (Zn/Co-MOF). Front Chem 2020; 8:719. [PMID: 33173759 PMCID: PMC7538659 DOI: 10.3389/fchem.2020.00719] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Accepted: 07/13/2020] [Indexed: 11/13/2022] Open
Abstract
Metal-organic framework (MOF)-derived nanoporous carbons (NPCs) and porous metal oxide nanostructures or nanocomposites have gathered considerable interest due to their potential use in supercapacitor (SCs) applications, owing to their precise control over porous architectures, pore volumes, and surface area. Bimetallic MOFs could provide rich redox reactions deriving from improved charge transfer between different metal ions, so their supercapacitor performance could be further greatly enhanced. In this study, "One-for-All" strategy is adopted to synthesize both positive and negative electrodes for hybrid asymmetric SCs (ASCs) from a single bimetallic MOF. The bimetallic Zn/Co-MOF with cuboid-like structures were synthesized by a simple method. The MOF-derived nanoporous carbons (NPC) were then obtained by post-heat treatment of the as-synthesized Zn/Co-MOF and rinsing with HCl, and bimetallic oxides (ZnCo2O4) were achieved by sintering the Zn/Co-MOF in air. The as-prepared MOF-derived NPC and bimetallic oxides were utilized as negative and positive materials to assemble hybrid ASCs with 6 M KOH as an electrolyte. Owing to the matchable voltage window and specific capacitance between the negative (NPC) and positive (ZnCo2O4), the as-assembled ASCs delivered high specific capacitance of 94.4 F/g (cell), excellent energy density of 28.6 Wh/kg at a power density of 100 W/kg, and high cycling stability of 87.2% after 5,000 charge-discharge cycles. This strategy is promising in producing high-energy-density electrode materials in supercapacitors.
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Affiliation(s)
- Da He
- Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemical and Environmental Engineering, Wuhan Institute of Technology, Wuhan, China
| | - Yu Gao
- Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemical and Environmental Engineering, Wuhan Institute of Technology, Wuhan, China
| | - Yucen Yao
- College of Chemistry and Environmental Engineering, Chongqing University of Arts and Sciences, Chongqing, China
| | - Ling Wu
- Hubei Province Key Laboratory of Coal Conversion and New Carbon Materials, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan, China
| | - Jiang Zhang
- Hubei Province Key Laboratory of Coal Conversion and New Carbon Materials, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan, China
| | - Zheng-Hong Huang
- Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing, China
| | - Ming-Xi Wang
- Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemical and Environmental Engineering, Wuhan Institute of Technology, Wuhan, China
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Sun Q, Wang N, Xu Q, Yu J. Nanopore-Supported Metal Nanocatalysts for Efficient Hydrogen Generation from Liquid-Phase Chemical Hydrogen Storage Materials. Adv Mater 2020; 32:e2001818. [PMID: 32638425 DOI: 10.1002/adma.202001818] [Citation(s) in RCA: 79] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 04/11/2020] [Accepted: 04/14/2020] [Indexed: 05/11/2023]
Abstract
Hydrogen has emerged as an environmentally attractive fuel and a promising energy carrier for future applications to meet the ever-increasing energy challenges. The safe and efficient storage and release of hydrogen remain a bottleneck for realizing the upcoming hydrogen economy. Hydrogen storage based on liquid-phase chemical hydrogen storage materials is one of the most promising hydrogen storage techniques, which offers considerable potential for large-scale practical applications for its excellent safety, great convenience, and high efficiency. Recently, nanopore-supported metal nanocatalysts have stood out remarkably in boosting the field of liquid-phase chemical hydrogen storage. Herein, the latest research progress in catalytic hydrogen production is summarized, from liquid-phase chemical hydrogen storage materials, such as formic acid, ammonia borane, hydrous hydrazine, and sodium borohydride, by using metal nanocatalysts confined within diverse nanoporous materials, such as metal-organic frameworks, porous carbons, zeolites, mesoporous silica, and porous organic polymers. The state-of-the-art synthetic strategies and advanced characterizations for these nanocatalysts, as well as their catalytic performances in hydrogen generation, are presented. The limitation of each hydrogen storage system and future challenges and opportunities on this subject are also discussed. References in related fields are provided, and more developments and applications to achieve hydrogen energy will be inspired.
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Affiliation(s)
- Qiming Sun
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Ning Wang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Qiang Xu
- AIST-Kyoto University Chemical Energy Materials Open Innovation Laboratory (ChEM-OIL), National Institute of Advanced Industrial Science and Technology (AIST), Sakyo-ku, Kyoto, 606-8501, Japan
| | - Jihong Yu
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
- International Center of Future Science, Jilin University, 2699 Qianjin Street, Changchun, 130012, P. R. China
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26
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Chen D, Ning S, Lan J, Peng M, Duan H, Pan A, Tan Y. General Synthesis of Nanoporous 2D Metal Compounds with 3D Bicontinous Structure. Adv Mater 2020; 32:e2004055. [PMID: 33058319 DOI: 10.1002/adma.202004055] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Revised: 08/27/2020] [Indexed: 06/11/2023]
Abstract
Although 2D layered metal compounds are widely exploited using various techniques such as exfoliation and vapor-phase-assisted growth, it is still challenging to construct the 2D materials in a 3D configuration with preservation of the unique physicochemical properties of the metal compounds. Herein, a general synthetic strategy is reported for a wide variety of 2D (atomic-scale thickness) metal compounds with 3D bicontinous nanoporous structure. 19 binary compounds including sulfides, selenides, tellurides, carbides, and nitrides, and five alloyed compounds, are successfully prepared via a surface alloy strategy, which are readily created by using a recyclable nanoporous gold assisted chemical vapor deposition process. These 3D nanoporous metal compounds with preserved 2D physicochemical properties, tunable pore sizes, and compositions for electrocatalytic applications, show excellent catalytic performance in the electrochemical N2 reduction reaction. This work opens up a promising avenue for fundamental studies and potential applications of a wide variety of nanoporous metal compounds.
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Affiliation(s)
- Dechao Chen
- College of Materials Science and Engineering, Hunan University, Changsha, Hunan, 410082, China
| | - Shoucong Ning
- Department of Materials Science and Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore, 117575, Singapore
| | - Jiao Lan
- College of Materials Science and Engineering, Hunan University, Changsha, Hunan, 410082, China
| | - Ming Peng
- College of Materials Science and Engineering, Hunan University, Changsha, Hunan, 410082, China
| | - Huigao Duan
- College of Mechanical and Vehicle Engineering, Hunan University, Changsha, Hunan, 410082, China
| | - Anlian Pan
- College of Materials Science and Engineering, Hunan University, Changsha, Hunan, 410082, China
| | - Yongwen Tan
- College of Materials Science and Engineering, Hunan University, Changsha, Hunan, 410082, China
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27
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Acevedo YM, Sengar N, Min M, Clancy P. Transferable Molecular Model of Woven Covalent Organic Framework Materials. ACS Appl Mater Interfaces 2020; 12:48957-48968. [PMID: 32972130 DOI: 10.1021/acsami.0c13792] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Two woven covalent organic framework materials (COF-505 and COF-506) have been synthesized since 2016, and the latter demonstrated the ability to take up dyes and other small molecules. This opens the door to applications such as separations, sensing, and catalysis. However, accelerating the design of future woven materials by changing the chemistry of the "threads" will require a computational model for these materials. Since no such atomic-scale model exists, we have developed a protocol for optimizing a force field for woven materials which can be used as the input to molecular dynamics simulations. Their high density and elasticity made these COFs challenging to model at a semiempirical level. Our modeling approach required simultaneous optimization of lattice parameters and elasticity using density functional theory-derived energy barriers and available experimental results. We used this force field, parameterized to fit COF-505, without change, to predict the structure of COF-506. This model allowed us to predict an anisotropy in 505's elasticity and preferred directions for diffusion which cannot be seen experimentally. The pore size distribution for 506 is dominated by small pores (80% <10 Å dia.), though 5% of the pores are up to 20 Å in diameter. We confirmed the experimental result that gases (barring helium) do not diffuse appreciably in COF-505. We validated our (unaltered) force field model to accurately predict experimental uptake data for tetrahydrofuran and methyl orange dye in COF-506. We proposed an atomic-scale mechanism by which COF-505 becomes metallated and demetallated. In addition, in advance of experimental studies, we determined the ability of 505 to incorporate other metals, such as Zn and Fe, which might be considered artificial photosynthesis agents. These predictions validate that Cu was a particularly appropriate choice of metal center for the synthesis, showcasing the ability of this model to play a role in designing woven materials a priori.
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Affiliation(s)
- Yaset M Acevedo
- Robert F. Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Nikita Sengar
- Robert F. Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, New York 14853, United States
- Department of Chemical and Biomolecular Engineering, The Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Meng Min
- Robert F. Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, New York 14853, United States
- Department of Chemical and Biomolecular Engineering, The Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Paulette Clancy
- Robert F. Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, New York 14853, United States
- Department of Chemical and Biomolecular Engineering, The Johns Hopkins University, Baltimore, Maryland 21218, United States
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28
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Abstract
Nanoporous materials (NPMs) made by dealloying have been well recognized as multifunctional electrodes for lithium-ion batteries (LIBs). In recent years, there are ever-increasing demands on grid-scale energy storage devices composed by earth-abundant elements such as Na, K, Mg, Al, and Zn. Compared to LIBs, these electrochemical cells face critical challenges such as slow kinetics of redox reactions and structural instability owing to large ion size and/or multiple-electron process. Much interest has been focused on NPMs to address these issues with great success. This Minireview discusses the recent research progresses on these novel electrode materials in the emerging post-lithium batteries, including the rational-design of NPMs, structure-performance correlation in each battery system, and insights into future development of this rapidly growing field.
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Affiliation(s)
- Xuan Wu
- Tianjin Key Laboratory of Advanced Functional Porous Materials, Institute for New Energy Materials and Low-Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin, 300384, P. R. China
- State Key Laboratory of Quality Research in Chinese Medicines, Macau University of Science and Technology, Taipa, Macau, P. R. China
| | - Guang He
- Tianjin Key Laboratory of Advanced Functional Porous Materials, Institute for New Energy Materials and Low-Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin, 300384, P. R. China
| | - Yi Ding
- Tianjin Key Laboratory of Advanced Functional Porous Materials, Institute for New Energy Materials and Low-Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin, 300384, P. R. China
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29
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Kan M, Yan ZW, Wang X, Hitt JL, Xiao L, McNeill JM, Wang Y, Zhao Y, Mallouk TE. 2-Aminobenzenethiol-Functionalized Silver-Decorated Nanoporous Silicon Photoelectrodes for Selective CO 2 Reduction. Angew Chem Int Ed Engl 2020; 59:11462-11469. [PMID: 32249497 DOI: 10.1002/anie.202001953] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Indexed: 01/17/2023]
Abstract
A molecularly thin layer of 2-aminobenzenethiol (2-ABT) was adsorbed onto nanoporous p-type silicon (b-Si) photocathodes decorated with Ag nanoparticles (Ag NPs). The addition of 2-ABT alters the balance of the CO2 reduction and hydrogen evolution reactions, resulting in more selective and efficient reduction of CO2 to CO. The 2-ABT adsorbate layer was characterized by Fourier transform infrared (FTIR) spectroscopy and modeled by density functional theory calculations. Ex situ X-ray photoelectron spectroscopy (XPS) of the 2-ABT modified electrodes suggests that surface Ag atoms are in the +1 oxidation state and coordinated to 2-ABT via Ag-S bonds. Under visible light illumination, the onset potential for CO2 reduction was -50 mV vs. RHE, an anodic shift of about 150 mV relative to a sample without 2-ABT. The adsorption of 2-ABT lowers the overpotentials for both CO2 reduction and hydrogen evolution. A comparison of electrodes functionalized with different aromatic thiols and amines suggests that the primary role of the thiol group in 2-ABT is to anchor the NH2 group near the Ag surface, where it serves to bind CO2 and also to assist in proton transfer.
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Affiliation(s)
- Miao Kan
- School of Environmental Science and Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai, 200240, China.,Department of Chemistry, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Zhifei Wang Yan
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Xingtao Wang
- School of Environmental Science and Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Jeremy L Hitt
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Langqiu Xiao
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Jeffrey M McNeill
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Yong Wang
- School of Environmental Science and Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Yixin Zhao
- School of Environmental Science and Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Thomas E Mallouk
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA, 19104, USA
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30
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Dong Q, Zhou F, Jiang J, Xu WL, Behera D, Sengupta B, Yu M. Advanced Functional Hierarchical Nanoporous Structures with Tunable Microporous Coatings Formed via an Interfacial Reaction Processing. ACS Appl Mater Interfaces 2020; 12:26360-26366. [PMID: 32419448 DOI: 10.1021/acsami.0c05310] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
It is challenging, but constructing hierarchical nanoporous structures with microporous coatings for various important applications, such as entrapment of homogeneous catalysts, size/shape selective catalysis, and so forth, is an urgent need. Moreover, microporous inorganic coatings are particularly desirable because of their excellent stability in organic solvents and at elevated temperatures and pressures. In this study, we design a novel liquid phase interfacial reaction process to form a defect-free, hybrid coating, which can be subsequently converted into microporous coatings, with tunable pore size, on nanoporous materials. As an example to entrap functional materials, tetrakis(triphenylphosphine) palladium (Pd(PPh3)4) was in situ synthesized in the mesoporous channels and encapsulated by the microporous coating shell. The encapsulated Pd(PPh3)4 catalyst exhibited negligible Pd leaching, providing a promising solution for the challenging catalyst separation problem in homogeneous catalysis. These results suggest that this novel strategy might be an effective way of forming microporous inorganic coatings on nanoporous materials for entrapping functional materials for wide applications.
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Affiliation(s)
- Qiaobei Dong
- Department of Chemical & Biological Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
| | - Fanglei Zhou
- Department of Chemical & Biological Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
| | - Ji Jiang
- Department of Chemical & Biological Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
| | - Weiwei L Xu
- Department of Chemical & Biological Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
| | - Dinesh Behera
- Department of Chemical & Biological Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
| | - Bratin Sengupta
- Department of Chemical & Biological Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
| | - Miao Yu
- Department of Chemical & Biological Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
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31
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Pullano SA, Falcone F, Critello DC, Bianco MG, Menniti M, Fiorillo AS. An Affordable Fabrication of a Zeolite-Based Capacitor for Gas Sensing. Sensors (Basel) 2020; 20:E2143. [PMID: 32290282 DOI: 10.3390/s20072143] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 03/20/2020] [Accepted: 04/07/2020] [Indexed: 11/16/2022]
Abstract
The development of even more compact, inexpensive, and highly sensitive gas sensors is widespread, even though their performances are still limited and technological improvements are in continuous evolution. Zeolite is a class of material which has received particular attention in different applications due to its interesting adsorption/desorption capabilities. The behavior of a zeolite 4A modified capacitor has been investigated for the adsorption of nitrogen (N2), nitric oxide (NO) and 1,1-Difluoroethane (C2H4F2), which are of interest in the field of chemical, biological, radiological, and nuclear threats. Sample measurements were carried out in different environmental conditions, and the variation of the sensor electric capacitance was investigated. The dielectric properties were influenced by the type and concentration of gas species in the environment. Higher changes in capacitance were shown during the adsorption of dry air (+4.2%) and fluorinated gas (+7.3%), while lower dielectric variations were found upon exposure to N2 (-0.4%) and NO (-0.5%). The proposed approach pointed-out that a simple fabrication process may provide a convenient and affordable fabrication of reusable capacitive gas sensor.
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32
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Dantas S, Neimark AV. Coupling Structural and Adsorption Properties of Metal-Organic Frameworks: From Pore Size Distribution to Pore Type Distribution. ACS Appl Mater Interfaces 2020; 12:15595-15605. [PMID: 32157869 DOI: 10.1021/acsami.0c01682] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Metal-organic frameworks (MOFs) attract a rapidly growing attention across the disciplines due to their multifarious pore structures and unique ability to selectively adsorb, store, and release various guest molecules. Pore structure characterization and coupling of adsorption and structural properties are imperative for rational design of advanced MOF materials and their applications. The pore structure of MOFs represents a three-dimensional network comprised of several types of pore compartments: interconnected cages and channels distinguished by their size, shape, and chemistry. Here, we propose a novel methodology for pore structure characterization of MOF materials based on matching of the experimental adsorption isotherms to in silico-generated fingerprint isotherms of adsorption in individual pore compartments of the ideal crystal. The proposed approach couples structural and adsorption properties, determines the contributions of different types of pores into the total adsorption, and estimates to what extent the pore structure of the sample under investigation is different from the ideal crystal. The MOF pore structure is characterized by the pore type distribution (PTD), which is more informative than the traditional pore size distribution that is based on oversimplistic pore models. The method is illustrated on the example of Ar adsorption at 87 K on hydrated and dehydrated structures of Cu-BTC, one of the most well-known MOF materials. The PTD determined from the experimental isotherm provides an estimate of the crystal fraction in the sample and the accessibility and degree of hydration of different types of pore compartments. In addition, the PTD determined from the experimental adsorption isotherm is used to predict the isosteric heat of adsorption that provides important information on the specifics of adsorption interactions. The results are found to be in excellent agreement with experimental data. Such detailed information about the pore structure and adsorption properties of practical MOF samples cannot be obtained with currently available methods of adsorption characterization.
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Affiliation(s)
- Silvio Dantas
- Department of Chemical and Biochemical Engineering, Rutgers, The State University of New Jersey, 98 Brett Road, Piscataway, New Jersey 08854, United States
| | - Alexander V Neimark
- Department of Chemical and Biochemical Engineering, Rutgers, The State University of New Jersey, 98 Brett Road, Piscataway, New Jersey 08854, United States
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33
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Gimenez R, Soler-Illia GJAA, Berli CLA, Bellino MG. Nanopore-Enhanced Drop Evaporation: When Cooler or More Saline Water Droplets Evaporate Faster. ACS Nano 2020; 14:2702-2708. [PMID: 31927978 DOI: 10.1021/acsnano.9b06618] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The evaporation of water droplets on surfaces is a ubiquitous phenomenon in nature and has critical importance in a broad range of technical applications. Here, we show a substantial enhancement of liquid evaporation rate when droplets are on nanoporous thin film surfaces. We also reveal how this nanopore-enhanced evaporation leads to counterintuitive phenomena: cooler or more saline water droplets evaporate faster. We find indeed that, contrary to typical evaporation behavior of sessile droplets on nonporous surfaces, the droplets placed on nanoporous thin films evaporate more rapidly when salt concentration increases or when the temperature decreases. This peculiar droplet evaporation behavior is related to the key role of the steady wetted annulus that is self-generated into the nanopore network in the drop periphery, which leads to an effectively enhanced evaporation area that controls the overall evaporation process. Our results provide the prospect of conceiving fresh scenarios in the evaporation of drops on surfaces in both relevant applications and fundamental insights.
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Affiliation(s)
- Rocio Gimenez
- Instituto de Nanociencia y Nanotecnología CNEA-CONICET, Av. Gral. Paz 1499, San Martín, Buenos Aires B1650, Argentina
| | - Galo J A A Soler-Illia
- Instituto de Nanosistemas, UNSAM-CONICET, Av. 25 de Mayo 1021, San Martín 1650, Argentina
| | - Claudio Luis Alberto Berli
- INTEC (Universidad Nacional del Litoral-CONICET) Predio CCT CONICET Santa Fe, RN 168, 3000, Santa Fe 1704, Argentina
| | - Martín Gonzalo Bellino
- Instituto de Nanociencia y Nanotecnología CNEA-CONICET, Av. Gral. Paz 1499, San Martín, Buenos Aires B1650, Argentina
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Caddeo F, Loche D, Casula MF, Corrias A. Growing CeO 2 Nanoparticles Within the Nano-Porous Architecture of the SiO 2 Aerogel. Front Chem 2020; 8:57. [PMID: 32117882 PMCID: PMC7018665 DOI: 10.3389/fchem.2020.00057] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Accepted: 01/17/2020] [Indexed: 11/13/2022] Open
Abstract
In this study, new CeO2-SiO2 aerogel nanocomposites obtained by controlled growth of CeO2 nanoparticles within the highly porous matrix of a SiO2 aerogel are presented. The nanocomposites have been synthesized via a sol-gel route, employing cerium (III) nitrate as the CeO2 precursor and selected surfactants to control the growth of the CeO2 nanoparticles, which occurs during the supercritical drying of the aerogels. Samples with different loading of the CeO2 dispersed phase, ranging from 5 to 15%, were obtained. The nanocomposites showed the morphological features typical of the SiO2 aerogels such as open mesoporosity with surface area values up to 430 m2·g-1. TEM and XRD characterizations show that nanocrystals of the dispersed CeO2 nanophase grow within the aerogel already during the supercritical drying process, with particle sizes in the range of 3 to 5 nm. TEM in particular shows that the CeO2 nanoparticles are well-distributed within the aerogel matrix. We also demonstrate the stability of the nanocomposites under high temperature conditions, performing thermal treatments in air at 450 and 900°C. Interestingly, the CeO2 nanoparticles undergo a very limited crystal growth, with sizes up to only 7 nm in the case of the sample subjected to a 900°C treatment.
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Affiliation(s)
- Francesco Caddeo
- School of Physical Sciences, University of Kent, Canterbury, United Kingdom
| | - Danilo Loche
- School of Physical Sciences, University of Kent, Canterbury, United Kingdom
| | - Maria F Casula
- Department of Mechanical, Chemical and Material Engineering, University of Cagliari, Cagliari, Italy
| | - Anna Corrias
- School of Physical Sciences, University of Kent, Canterbury, United Kingdom
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Cheng CF, Chen YM, Zou F, Liu K, Xia Y, Huang YF, Tung WY, Krishnan MR, Vogt BD, Wang CL, Ho RM, Zhu Y. Li-Ion Capacitor Integrated with Nano-network-Structured Ni/NiO/C Anode and Nitrogen-Doped Carbonized Metal-Organic Framework Cathode with High Power and Long Cyclability. ACS Appl Mater Interfaces 2019; 11:30694-30702. [PMID: 31373480 DOI: 10.1021/acsami.9b06354] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Lithium-ion capacitors (LICs) represent a new type of energy-storage devices, which have combined merits of high energy density Li-ion battery and high power density supercapacitor. Nevertheless, one significant challenge for LICs is the imbalanced kinetics between the fast capacitive cathode and relatively slow intercalation anode that limit the energy-storage performance. Here, the asymmetric LIC devices were developed based on a nitrogen-doped, carbonized zeolitic imidazolate framework (ZIF-8) cathode and a three-dimensional, nano-network-structured, conversion reaction-based Ni/NiO/C anode. These nanostructures associated with both the cathode and anode enable rapid electron and ions transport in the LIC devices, which allows the asymmetric LICs to be operated on either high energy mode (energy density of 114.7 Wh/kg at power density of 98.0 W/kg) or high power mode (power density of 60.1 kW/kg at energy density of 17.6 Wh/kg). The device also exhibited long-term cycle stability with 87% capacitance retention after 12 000 cycles. These results demonstrate that the rational design of nanoporous electrode structures can deliver a balanced, high-performance-activated cZIF-8|Ni/NiO/C-based lithium-ion capacitor.
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Affiliation(s)
| | | | | | | | | | - Yi-Fan Huang
- Department of Applied Chemistry , National Chiao Tung University , Hsinchu 30010 , Taiwan
| | | | - Mohan Raj Krishnan
- Department of Chemical Engineering , National Tsing Hua University , Hsinchu 30010 , Taiwan
| | | | - Chien-Lung Wang
- Department of Applied Chemistry , National Chiao Tung University , Hsinchu 30010 , Taiwan
| | - Rong-Ming Ho
- Department of Chemical Engineering , National Tsing Hua University , Hsinchu 30010 , Taiwan
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Rajeev G, Cowin AJ, Voelcker NH, Prieto Simon B. Magnetic Nanoparticles Enhance Pore Blockage-Based Electrochemical Detection of a Wound Biomarker. Front Chem 2019; 7:438. [PMID: 31245362 PMCID: PMC6582131 DOI: 10.3389/fchem.2019.00438] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2018] [Accepted: 05/28/2019] [Indexed: 11/29/2022] Open
Abstract
A novel pore blockage-based electrochemical immunosensor based on the combination of 100 nm-magnetic nanoparticles (MNPs), as signal enhancers, and 200 nm-pore diameter nanoporous anodic alumina (NAA) membranes, as sensing platform, is reported. A peptide conjugate mimicking flightless I (Flii), a wound healing biomarker, was chosen as target analyte. The sensing platform consists of an anti-Flii antibody (Ab1)-modified NAA membrane attached onto a gold electrode. Anti-KLH antibody (Ab2)-modified MNPs (MNP-Ab2) were used to selectively capture the Flii peptide conjugate in solution. Sensing was based on pore blockage of the Ab1-modified NAA membrane caused upon specific binding of the MNP-Ab2-analyte complex. The degree of pore blockage, and thus the concentration of the Flii peptide conjugate in the sample, was measured as a reduction in the oxidation current of a redox species ([Fe(CN)6]4-) added in solution. We demonstrated that pore blockage is drastically enhanced by applying an external magnetic field at the membrane backside to facilitate access of the MNP-Ab2-analyte complex into the pores, and thus ensure its availability to bind to the Ab1-modified NAA membrane. Combining the pore blockage-based electrochemical magnetoimmunosensor with an externally applied magnetic field, a limit of detection (LOD) of 0.5 ng/ml of Flii peptide conjugate was achieved, while sensing in the absence of magnetic field could only attain a LOD of 1.2 μg/ml. The developed sensing strategy is envisaged as a powerful solution for the ultra-sensitive detection of an analyte of interest present in a complex matrix.
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Affiliation(s)
- Gayathri Rajeev
- Future Industries Institute, University of South Australia, Mawson Lakes, SA, Australia
- Faculty of Science, Institute for Biomedical Materials and Devices, University of Technology, Sydney, NSW, Australia
| | - Allison J. Cowin
- Future Industries Institute, University of South Australia, Mawson Lakes, SA, Australia
| | - Nicolas H. Voelcker
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, Australia
- Melbourne Centre for Nanofabrication, Victorian Node of the Australian National Fabrication Facility, Clayton, VIC, Australia
- Commonwealth Scientific and Industrial Research Organisation, Clayton, VIC, Australia
- Department of Materials Science and Engineering, Monash University, Clayton, VIC, Australia
| | - Beatriz Prieto Simon
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, Australia
- Melbourne Centre for Nanofabrication, Victorian Node of the Australian National Fabrication Facility, Clayton, VIC, Australia
- Commonwealth Scientific and Industrial Research Organisation, Clayton, VIC, Australia
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Azhar A, Yamauchi Y, Allah AE, Alothman ZA, Badjah AY, Naushad M, Habila M, Wabaidur S, Wang J, Zakaria MB. Nanoporous Iron Oxide/Carbon Composites through In-Situ Deposition of Prussian Blue Nanoparticles on Graphene Oxide Nanosheets and Subsequent Thermal Treatment for Supercapacitor Applications. Nanomaterials (Basel) 2019; 9:nano9050776. [PMID: 31117195 PMCID: PMC6566787 DOI: 10.3390/nano9050776] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 05/06/2019] [Accepted: 05/08/2019] [Indexed: 11/25/2022]
Abstract
This work reports the successful preparation of nanoporous iron oxide/carbon composites through the in-situ growth of Prussian blue (PB) nanoparticles on the surface of graphene oxide (GO) nanosheets. The applied thermal treatment allows the conversion of PB nanoparticles into iron oxide (Fe2O3) nanoparticles. The resulting iron oxide/carbon composite exhibits higher specific capacitance at all scan rates than pure GO and Fe2O3 electrodes due to the synergistic contribution of electric double-layer capacitance from GO and pseudocapacitance from Fe2O3. Notably, even at a high current density of 20 A g−1, the iron oxide/carbon composite still shows a high capacitance retention of 51%, indicating that the hybrid structure provides a highly accessible path for diffusion of electrolyte ions.
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Affiliation(s)
- Alowasheeir Azhar
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan.
| | - Yusuke Yamauchi
- Key Laboratory of Eco-Chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China.
- School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, QLD 4072, Australia.
- Department of Plant & Environmental New Resources, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do 446-701, Korea.
| | - Abeer Enaiet Allah
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan.
- Chemistry Department, Faculty of Science, Beni-Suef University, Beni-Suef 62511, Egypt.
| | - Zeid A Alothman
- Advanced Material Research Chair, Chemistry Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia.
| | - Ahmad Yacine Badjah
- Advanced Material Research Chair, Chemistry Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia.
| | - Mu Naushad
- Advanced Material Research Chair, Chemistry Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia.
| | - Mohamed Habila
- Advanced Material Research Chair, Chemistry Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia.
| | - Saikh Wabaidur
- Advanced Material Research Chair, Chemistry Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia.
| | - Jie Wang
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan.
| | - Mohamed Barakat Zakaria
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan.
- School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, QLD 4072, Australia.
- Department of Chemistry, Faculty of Science, Tanta University, Tanta, Gharbeya 31527, Egypt.
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Pang F, Hou S, Wang P, Liu M, Luo Y, Zhao L. β-MnO 2 /Metal-Organic Framework Derived Nanoporous ZnMn 2 O 4 Nanorods as Lithium-Ion Battery Anodes with Superior Lithium-Storage Performance. Chemistry 2019; 25:5043-5050. [PMID: 30689233 DOI: 10.1002/chem.201806006] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Revised: 01/22/2019] [Indexed: 11/05/2022]
Abstract
Nanoporous ZnMn2 O4 nanorods have been successfully synthesized by calcining β-MnO2 /ZIF-8 precursors (ZIF-8 is a type of metal-organic framework). If measured as an anode material for lithium-ion batteries, the ZnMn2 O4 nanorods exhibit an initial discharge capacity of 1792 mA h g-1 at 200 mA g-1 , and an excellent reversible capacity of 1399.8 mA h g-1 after 150 cycles (78.1 % retention of the initial discharge capacity). Even at 1000 mA g-1 , the reversible capacity is still as high as 998.7 mA h g-1 after 300 cycles. The remarkable lithium-storage performance is attributed to the one-dimensional nanoporous structure. The nanoporous architecture not only allows more lithium ions to be stored, which provides additional interfacial lithium-storage capacity, but also buffers the volume changes, to a certain degree, during the Li+ insertion/extraction process. The results demonstrate that nanoporous ZnMn2 O4 nanorods with superior lithium-storage performance have the potential to be candidates for commercial anode materials in lithium-ion batteries.
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Affiliation(s)
- Fang Pang
- Institute of Opto-Electronic Materials and Technology, South China Normal University, Guangzhou, 510631, P.R. China.,Guangdong Provincial Engineering Technology, Research Center for Low Carbon and Advanced Energy Materials, Guangzhou, 510631, P.R. China
| | - Shuang Hou
- Institute of Opto-Electronic Materials and Technology, South China Normal University, Guangzhou, 510631, P.R. China.,Guangdong Provincial Engineering Technology, Research Center for Low Carbon and Advanced Energy Materials, Guangzhou, 510631, P.R. China
| | - Pu Wang
- Institute of Opto-Electronic Materials and Technology, South China Normal University, Guangzhou, 510631, P.R. China.,Guangdong Provincial Engineering Technology, Research Center for Low Carbon and Advanced Energy Materials, Guangzhou, 510631, P.R. China
| | - Miao Liu
- Institute of Opto-Electronic Materials and Technology, South China Normal University, Guangzhou, 510631, P.R. China.,Guangdong Provincial Engineering Technology, Research Center for Low Carbon and Advanced Energy Materials, Guangzhou, 510631, P.R. China
| | - Yizhen Luo
- Institute of Opto-Electronic Materials and Technology, South China Normal University, Guangzhou, 510631, P.R. China.,Guangdong Provincial Engineering Technology, Research Center for Low Carbon and Advanced Energy Materials, Guangzhou, 510631, P.R. China
| | - Lingzhi Zhao
- Institute of Opto-Electronic Materials and Technology, South China Normal University, Guangzhou, 510631, P.R. China.,Guangdong Provincial Engineering Technology, Research Center for Low Carbon and Advanced Energy Materials, Guangzhou, 510631, P.R. China
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Amabili M, Grosu Y, Giacomello A, Meloni S, Zaki A, Bonilla F, Faik A, Casciola CM. Pore Morphology Determines Spontaneous Liquid Extrusion from Nanopores. ACS Nano 2019; 13:1728-1738. [PMID: 30653291 DOI: 10.1021/acsnano.8b07818] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In this contribution we explore by means of experiments, theory, and molecular dynamics the effect of pore morphology on the spontaneous extrusion of nonwetting liquids from nanopores. Understanding and controlling this phenomenon is central for manipulating nanoconfined liquids, e. g., in nanofluidic applications, drug delivery, and oil extraction. Qualitatively different extrusion behaviors were observed in high-pressure water intrusion-extrusion experiments on porous materials with similar nominal diameter and hydrophobicity: macroscopic capillary models and molecular dynamics simulations revealed that the very presence or absence of extrusion is connected to the internal morphology of the pores and, in particular, to the presence of small-scale roughness or pore interconnections. Additional experiments with mercury confirmed that this mechanism is generic for nonwetting liquids and is rooted in the pore topology. The present results suggest a rational way to engineer heterogeneous systems for energy and nanofluidic applications in which the extrusion behavior can be controlled via the pore morphology.
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Affiliation(s)
- Matteo Amabili
- Dipartimento di Ingegneria Meccanica e Aerospaziale , Sapienza Università di Roma , 00184 Rome , Italy
| | - Yaroslav Grosu
- CIC Energigune , Albert Einstein 48 , Miñano ( Álava ) 01510 , Spain
| | - Alberto Giacomello
- Dipartimento di Ingegneria Meccanica e Aerospaziale , Sapienza Università di Roma , 00184 Rome , Italy
| | - Simone Meloni
- Dipartimento di Ingegneria Meccanica e Aerospaziale , Sapienza Università di Roma , 00184 Rome , Italy
| | - Abdelali Zaki
- CIC Energigune , Albert Einstein 48 , Miñano ( Álava ) 01510 , Spain
| | - Francisco Bonilla
- CIC Energigune , Albert Einstein 48 , Miñano ( Álava ) 01510 , Spain
| | - Abdessamad Faik
- CIC Energigune , Albert Einstein 48 , Miñano ( Álava ) 01510 , Spain
| | - Carlo Massimo Casciola
- Dipartimento di Ingegneria Meccanica e Aerospaziale , Sapienza Università di Roma , 00184 Rome , Italy
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40
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Simon CM, Carraro C. Multi- and instabilities in gas partitioning between nanoporous materials and rubber balloons. Proc Math Phys Eng Sci 2019; 475:20180703. [PMID: 30853846 PMCID: PMC6405450 DOI: 10.1098/rspa.2018.0703] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Accepted: 01/23/2019] [Indexed: 11/12/2022] Open
Abstract
In the two-balloon experiment, two rubber balloons are connected and allowed to exchange gas. Owing to the non-monotonic relationship between the radius of the balloon and the pressure of gas inside it, the two-balloon system presents multi- and in-stabilities. Herein, we consider a two-adsorbent system, where two different adsorbents are allowed to exchange gas. We show that, for rigid adsorbents, the thermodynamic equilibrium state is unique. Then, we consider an adsorbent-balloon system, where an adsorbent exchanges gas with a rubber balloon. This system can exhibit multiple states at thermodynamic equilibrium- two (meta)stable and one unstable. The size of the balloon, pressure of gas in the balloon, and partitioning of gas between the adsorbent and the balloon differ among the equilibrium states. Temperature changes and the addition/removal of gas into/from the adsorbent-balloon system can induce catastrophe bifurcations and show hysteresis. Furthermore, the adsorbent-balloon system exhibits a critical temperature where, when approached from below, the discrepancy of balloon size between the two (meta)stable states decreases and, beyond, bistability is impossible. Practically, our findings preclude multiple partitions of adsorbed gas in rigid, mixed-linker or stratified metal-organic frameworks and may inspire new soft actuator and sensor designs.
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Affiliation(s)
- Cory M. Simon
- School of Chemical, Biological, and Environmental Engineering, Oregon State University, Corvallis, OR, USA
| | - Carlo Carraro
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, CA, USA
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41
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Tan Y, Luo M, Liu P, Cheng C, Han J, Watanabe K, Chen M. Three-Dimensional Nanoporous Co 9S 4P 4 Pentlandite as a Bifunctional Electrocatalyst for Overall Neutral Water Splitting. ACS Appl Mater Interfaces 2019; 11:3880-3888. [PMID: 30614681 DOI: 10.1021/acsami.8b17961] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Significant progress has recently been achieved in developing noble-metal-free catalysts for electrochemical water splitting in acidic and alkaline electrolytes. However, high-performance bifunctional catalysts toward both hydrogen evolution and oxygen oxidation reactions of neutral water have not been realized in spite of the technical importance for electrochemical hydrogen production in natural environments powered by renewable energy sources of wind, solar, and so on. Here, we report a nanoporous Co9S4P4 pentlandite with three-dimensional bicontinuous nanoporosity for electrochemical water splitting in neutral solutions. The three-dimensional binder-free catalyst shows a negligible onset overpotential, low Tafel slope, and excellent poisoning tolerance for hydrogen evolution reaction, comparable to or even better than commercial Pt catalysts. Remarkably, the new catalyst also has excellent catalytic activities toward oxygen evolution and, hence, can be used as both anode and cathode for overall neutral water splitting. These extraordinary catalytic activities toward neutral water splitting have never been obtained from non-noble-metal catalysts before. The bifunctional and low-cost catalyst holds great promise for practical applications in electrochemical water splitting in natural environments.
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Affiliation(s)
- Yongwen Tan
- School of Materials Science and Engineering , Hunan University , Changsha 410082 , China
- Advanced Institute for Materials Research , Tohoku University , Sendai 980-8577 , Japan
| | - Min Luo
- Department of Physics , Shanghai Second Polytechnic University , Shanghai 201209 , China
| | - Pan Liu
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering , Shanghai Jiao Tong University , Shanghai 200030 , China
| | - Chun Cheng
- Advanced Institute for Materials Research , Tohoku University , Sendai 980-8577 , Japan
| | - Jiuhui Han
- Advanced Institute for Materials Research , Tohoku University , Sendai 980-8577 , Japan
| | - Kentaro Watanabe
- Advanced Institute for Materials Research , Tohoku University , Sendai 980-8577 , Japan
| | - Mingwei Chen
- Advanced Institute for Materials Research , Tohoku University , Sendai 980-8577 , Japan
- CREST, JST , 4-1-8 Honcho Kawaguchi , Saitama 332-0012 , Japan
- Department of Materials Science and Engineering , Johns Hopkins University , Baltimore , Maryland 21218 , United States
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42
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Song X, Zhang M, Yao M, Hao C, Qiu J. New Insights into the Anchoring Mechanism of Polysulfides inside Nanoporous Covalent Organic Frameworks for Lithium-Sulfur Batteries. ACS Appl Mater Interfaces 2018; 10:43896-43903. [PMID: 30480990 DOI: 10.1021/acsami.8b16172] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The application prospects of lithium-sulfur (Li-S) batteries are constrained by many challenges, especially the shuttle effect of lithium polysulfides (Li2S x). Recently, microporous covalent organic framework (COF) materials have been used to anchor electrodes in Li-S batteries, because of their preferable characteristics, such as self-design ability, suitable pore size, and various active groups. To identify the ideal anchoring materials that can effectively restrain the shuttle of Li2S x species, the anchoring mechanism between COF materials and Li2S x species should be investigated in depth. Therefore, we systematically investigated the anchoring mechanism between specific COF nanomaterials (consisting of boron and oxygen atoms and benzene group) and Li2S x ( x = 1, 2, 4, 6, or 8) species on the surface and inside the pore using density functional theory methods with van der Waals interactions. The detailed analysis of the adsorption energy, difference charge density, charge transfer, and atomic density of states can be used to determine that the COF nanomaterials, with the structure of boroxine connecting to benzene groups and boroxine groups not constructed at the corner of the structure, can effectively anchor the Li2S x series. Accordingly, this study provides the theoretical basis for the molecular-scale design of ideal anchoring materials, which can be useful to improve the performance of the Li-S batteries.
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Aradi E, Lewis-Fell J, Harrison RW, Greaves G, Mir AH, Donnelly SE, Hinks JA. Enhanced Radiation Tolerance of Tungsten Nanoparticles to He Ion Irradiation. Nanomaterials (Basel) 2018; 8:nano8121052. [PMID: 30558254 PMCID: PMC6316147 DOI: 10.3390/nano8121052] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 12/09/2018] [Accepted: 12/12/2018] [Indexed: 11/16/2022]
Abstract
Materials exposed to plasmas in magnetic confinement nuclear reactors will accumulate radiation-induced defects and energetically implanted gas atoms (from the plasma and transmutations), of which insoluble helium (He) is likely to be the most problematic. The large surface-area-to-volume ratio exhibited by nanoporous materials provides an unsaturable sink with the potential to continuously remove both point defects and He. This property enhances the possibilities for these materials to be tailored for high radiation-damage resistance. In order to explore the potential effect of this on the individual ligaments of nanoporous materials, we present results on the response of tungsten (W) nanoparticles (NPs) to 15 keV He ion irradiation. Tungsten foils and various sizes of NPs were ion irradiated concurrently and imaged in-situ via transmission electron microscopy at 750 °C. Helium bubbles were not observed in NPs with diameters less than 20 nm but did form in larger NPs and the foils. No dislocation loops or black spot damage were observed in any NPs up to 100 nm in diameter but were found to accumulate in the W foils. These results indicate that a nanoporous material, particularly one made up of ligaments with characteristic dimensions of 30 nm or less, is likely to exhibit significant resistance to He accumulation and structural damage and, therefore, be highly tolerant to radiation.
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Affiliation(s)
- E Aradi
- School of Computing and Engineering, University of Huddersfield, Queensgate, Huddersfield HD1 3DH, UK.
| | - J Lewis-Fell
- School of Computing and Engineering, University of Huddersfield, Queensgate, Huddersfield HD1 3DH, UK.
| | - R W Harrison
- School of Computing and Engineering, University of Huddersfield, Queensgate, Huddersfield HD1 3DH, UK.
- School of Mechanical, Aerospace and Civil Engineering, University of Manchester, Sackville Street, Manchester M1 3NJ, UK.
| | - G Greaves
- School of Computing and Engineering, University of Huddersfield, Queensgate, Huddersfield HD1 3DH, UK.
| | - A H Mir
- School of Computing and Engineering, University of Huddersfield, Queensgate, Huddersfield HD1 3DH, UK.
| | - S E Donnelly
- School of Computing and Engineering, University of Huddersfield, Queensgate, Huddersfield HD1 3DH, UK.
| | - J A Hinks
- School of Computing and Engineering, University of Huddersfield, Queensgate, Huddersfield HD1 3DH, UK.
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Kim YS, Song J, Hwang C, Wang X, Wang H, MacManus‐Driscoll JL, Song H, Cho S. Nanoporous Films and Nanostructure Arrays Created by Selective Dissolution of Water-Soluble Materials. Adv Sci (Weinh) 2018; 5:1800851. [PMID: 30479927 PMCID: PMC6247061 DOI: 10.1002/advs.201800851] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 08/27/2018] [Indexed: 05/31/2023]
Abstract
Highly porous thin films and nanostructure arrays are created by a simple process of selective dissolution of a water-soluble material, Sr3Al2O6. Heteroepitaxial nanocomposite films with self-separated phases of a target material and Sr3Al2O6 are first prepared by physical vapor deposition. NiO, ZnO, and Ni1- x Mg x O are used as the target materials. Only the Sr3Al2O6 phase in each nanocomposite film is selectively dissolved by dipping the film in water for 30 s at room temperature. This gentle and fast method minimizes damage to the remaining target materials and side reactions that can generate impurity phases. The morphologies and dimensions of the pores and nanostructures are controlled by the relative wettability of the separated phases on the growth substrates. The supercapacitor properties of the porous NiO films are enhanced compared to plain NiO films. The method can also be used to prepare porous films or nanostructure arrays of other oxides, metals, chalcogenides, and nitrides, as well as films or nanostructures with single-crystalline, polycrystalline, or amorphous nature.
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Affiliation(s)
- Yoon Seo Kim
- School of Materials Science and EngineeringUlsan National Institute of Science and Technology (UNIST)Ulsan44919Republic of Korea
| | - Jaejung Song
- School of Materials Science and EngineeringUlsan National Institute of Science and Technology (UNIST)Ulsan44919Republic of Korea
| | - Chihyun Hwang
- School of Energy and Chemical EngineeringUlsan National Institute of Science and Technology (UNIST)Ulsan44919Republic of Korea
| | - Xuejing Wang
- School of Materials EngineeringPurdue UniversityWest LafayetteIN47907USA
| | - Haiyan Wang
- School of Materials EngineeringPurdue UniversityWest LafayetteIN47907USA
| | - Judith L. MacManus‐Driscoll
- Department of Materials Science and MetallurgyUniversity of Cambridge27 Charles Babbage RoadCambridgeCB3 0FSUK
| | - Hyun‐Kon Song
- School of Energy and Chemical EngineeringUlsan National Institute of Science and Technology (UNIST)Ulsan44919Republic of Korea
| | - Seungho Cho
- School of Materials Science and EngineeringUlsan National Institute of Science and Technology (UNIST)Ulsan44919Republic of Korea
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Li W, Bandosz TJ. Role of Heteroatoms in S,N-Codoped Nanoporous Carbon Materials in CO 2 (Photo)electrochemical Reduction. ChemSusChem 2018; 11:2987-2999. [PMID: 29920975 DOI: 10.1002/cssc.201801073] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Revised: 06/14/2018] [Indexed: 06/08/2023]
Abstract
Thiourea-modified wood-based activated carbon materials were evaluated as catalysts for the CO2 electrochemical reduction reaction (CO2 ERR). The materials obtained at 950 °C showed long-term stability. The results indicated that thiophenic sulfur provides the catalytic activity for CO formation. However, it was not as active for CH4 formation as was pyridinic N. Tafel plots suggested that the nanoporous structure enhanced the kinetics for CO2 reduction. The electric conductivity limited the activity for CO2 ERR in the materials modified at 600, 800, and 900 °C. The effect of visible light on CO2 ERR was also investigated in this study. Upon irradiation, photocurrent was generated, and the current density increased during the CO2 reduction process. Combined with a band-gap alignment, the results indicate that thiophenic S in the carbon matrix contributed to the sample's photoactivity in visible light. These species enhance the overall reduction process, promoting both the hydrogen evolution reaction and CO2 reduction to CO.
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Affiliation(s)
- Wanlu Li
- Department of Chemistry and Biochemistry, The City College of New York, New York, NY, 10031, USA
- Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, New York, NY, 10016, USA
| | - Teresa J Bandosz
- Department of Chemistry and Biochemistry, The City College of New York, New York, NY, 10031, USA
- Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, New York, NY, 10016, USA
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Fruehwirth SM, Meyer R, Hauser AW. Chiral Separation via Molecular Sieving: A Computational Screening of Suitable Functionalizations for Nanoporous Graphene. Chemphyschem 2018; 19:2331-2339. [PMID: 29863766 PMCID: PMC6175349 DOI: 10.1002/cphc.201800413] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Indexed: 11/08/2022]
Abstract
In a recent study [Angew. Chem. Int. Ed., 2014, 53, 9957–9960] a new concept of chiral separation has been suggested, which is based on functionalized, nanoporous sheets of graphene. In this follow‐up article we discuss the underlying principle in greater detail and make suggestions for suitable pore functionalizations with respect to a selection of chiral prototype molecules. Considering drug molecules as future targets for a chiral separation via membranes, the necessary pore sizes represent a big challenge for standard methods of computational chemistry. Therefore, we test two common force fields (GAFF, CGenFF) as well as a semiempirical tight‐binding approach recently developed by the Grimme group (GFN‐xTB) against the computationally much more expensive density functional theory. We identify the GFN‐xTB method as the most suitable approach for future simulations of functionalized pores for the given purpose, as it is able to produce reaction pathways in very good agreement with density functional theory, even in cases where force fields tend to an extreme overestimation of barrier heights.
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Affiliation(s)
- Samuel M Fruehwirth
- Institute of Experimental Physics, Graz University of Technology, Petersgasse 16, A-8010, Graz, Austria
| | - Ralf Meyer
- Institute of Experimental Physics, Graz University of Technology, Petersgasse 16, A-8010, Graz, Austria
| | - Andreas W Hauser
- Institute of Experimental Physics, Graz University of Technology, Petersgasse 16, A-8010, Graz, Austria
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Kaneti YV, Dutta S, Hossain MSA, Shiddiky MJA, Tung KL, Shieh FK, Tsung CK, Wu KCW, Yamauchi Y. Strategies for Improving the Functionality of Zeolitic Imidazolate Frameworks: Tailoring Nanoarchitectures for Functional Applications. Adv Mater 2017; 29:1700213. [PMID: 28833624 DOI: 10.1002/adma.201700213] [Citation(s) in RCA: 199] [Impact Index Per Article: 28.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Revised: 04/13/2017] [Indexed: 05/24/2023]
Abstract
Zeolitic imidazolate frameworks (ZIFs), a subclass of metal-organic frameworks (MOFs) built with tetrahedral metal ions and imidazolates, offer permanent porosity and high thermal and chemical stabilities. While ZIFs possess some attractive physical and chemical properties, it remains important to enhance their functionality for practical application. Here, an overview of the extensive strategies which have been developed to improve the functionality of ZIFs is provided, including linker modifications, functional hybridization of ZIFs via the encapsulation of guest species (such as metal and metal oxide nanoparticles and biomolecules) into ZIFs, and hybridization with polymeric matrices to form mixed matrix membranes for industrial gas and liquid separations. Furthermore, the developed strategies for achieving size and shape control of ZIF nanocrystals are considered, which are important for optimizing the textural characteristics as well as the functional performance of ZIFs and their derived materials/hybrids. Moreover, the recent trends of using ZIFs as templates for the derivation of nanoporous hybrid materials, including carbon/metal, carbon/oxide, carbon/sulfide, and carbon/phosphide hybrids, are discussed. Finally, some perspectives on the potential future research directions and applications for ZIFs and ZIF-derived materials are offered.
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Affiliation(s)
- Yusuf Valentino Kaneti
- International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Saikat Dutta
- Department of Chemical Engineering, National Taiwan University, Taipei, 10617, Taiwan
- Catalysis Center for Energy Innovation (CCEI), University of Delaware, Newark, Delaware, 19716, USA
| | - Md S A Hossain
- Australian Institute for Innovative Materials (AIIM), University of Wollongong, Squires Way, North Wollongong, NSW, 2500, Australia
| | - Muhammad J A Shiddiky
- School of Natural Sciences, Queensland Micro and Nanotechnology Centre, Griffith University, Nathan Campus, QLD, 4111, Australia
| | - Kuo-Lun Tung
- Department of Chemical Engineering, National Taiwan University, Taipei, 10617, Taiwan
| | - Fa-Kuen Shieh
- Department of Chemistry, National Central University, Chung-Li, 32001, Taiwan
| | - Chia-Kuang Tsung
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts, 02467, USA
| | - Kevin C-W Wu
- Department of Chemical Engineering, National Taiwan University, Taipei, 10617, Taiwan
- Division of Medical Engineering Research, National Health Research Institutes, 35 Keyan Road, Zhunan, Miaoli County, 350, Taiwan
| | - Yusuke Yamauchi
- International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
- Australian Institute for Innovative Materials (AIIM), University of Wollongong, Squires Way, North Wollongong, NSW, 2500, Australia
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Ling H, Yi M, Nagai M, Xie L, Wang L, Hu B, Huang W. Controllable Organic Resistive Switching Achieved by One-Step Integration of Cone-Shaped Contact. Adv Mater 2017; 29:1701333. [PMID: 28707713 DOI: 10.1002/adma.201701333] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Revised: 06/03/2017] [Indexed: 06/07/2023]
Abstract
Conductive filaments (CFs)-based resistive random access memory possesses the ability of scaling down to sub-nanoscale with high-density integration architecture, making it the most promising nanoelectronic technology for reclaiming Moore's law. Compared with the extensive study in inorganic switching medium, the scientific challenge now is to understand the growth kinetics of nanoscale CFs in organic polymers, aiming to achieve controllable switching characteristics toward flexible and reliable nonvolatile organic memory. Here, this paper systematically investigates the resistive switching (RS) behaviors based on a widely adopted vertical architecture of Al/organic/indium-tin-oxide (ITO), with poly(9-vinylcarbazole) as the case study. A nanoscale Al filament with a dynamic-gap zone (DGZ) is directly observed using in situ scanning transmission electron microscopy (STEM) , which demonstrates that the RS behaviors are related to the random formation of spliced filaments consisting of Al and oxygen vacancy dual conductive channels growing through carbazole groups. The randomicity of the filament formation can be depressed by introducing a cone-shaped contact via a one-step integration method. The conical electrode can effectively shorten the DGZ and enhance the localized electric field, thus reducing the switching voltage and improving the RS uniformity. This study provides a deeper insight of the multiple filamentary mechanisms for organic RS effect.
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Affiliation(s)
- Haifeng Ling
- Key Laboratory for Organic Electronics and Information Displays (KLOEID), Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing, 210023, China
| | - Mingdong Yi
- Key Laboratory for Organic Electronics and Information Displays (KLOEID), Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing, 210023, China
| | - Masaru Nagai
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
| | - Linghai Xie
- Key Laboratory for Organic Electronics and Information Displays (KLOEID), Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing, 210023, China
| | - Laiyuan Wang
- Key Laboratory for Organic Electronics and Information Displays (KLOEID), Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing, 210023, China
| | - Bo Hu
- Key Laboratory for Organic Electronics and Information Displays (KLOEID), Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing, 210023, China
| | - Wei Huang
- Key Laboratory for Organic Electronics and Information Displays (KLOEID), Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing, 210023, China
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
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Abstract
Reticulated nanoporous materials generated by versatile molecular framework approaches are limited to pore dimensions on the scale of the utilized rigid molecular building blocks (<5 nm). The inherent flexibility of linear polymers precludes their utilization as long framework connectors for the extension of this strategy to larger length scales. We report a method for the fabrication of mesoporous frameworks by using bottlebrush copolymers with reactive end blocks serving as rigid macromolecular interconnectors with directional reactivity. End-reactive bottlebrush copolymers with pendant alkene functionalities were synthesized by a combination of controlled radical polymerization and polymer modification protocols. Ru-catalyzed cross-metathesis cross-linking of bottlebrush copolymers with two reactive end blocks resulted in the formation of polymer frameworks where isolated cross-linked domains were interconnected with bottlebrush copolymer bridges. The resulting materials were characterized by a continuous network pore structure with average pore sizes of 9-50 nm, conveniently tunable by the length of the utilized bottlebrush copolymer building blocks. The materials fabrication strategy described in this work expands the length scale of molecular framework materials and provides access to mesoporous polymers with a molecularly tunable reticulated pore structure without the need for templating, sacrificial component etching, or supercritical fluid drying.
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Affiliation(s)
- Esra Altay
- Department of Chemistry, University at Buffalo, The State University of New York , Buffalo, New York 14260-3000, United States
| | - Dmytro Nykypanchuk
- Center for Functional Nanomaterials, Brookhaven National Laboratory , Upton, New York 11973, United States
| | - Javid Rzayev
- Department of Chemistry, University at Buffalo, The State University of New York , Buffalo, New York 14260-3000, United States
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Alrwashdeh SS, Manke I, Markötter H, Klages M, Göbel M, Haußmann J, Scholta J, Banhart J. In Operando Quantification of Three-Dimensional Water Distribution in Nanoporous Carbon-Based Layers in Polymer Electrolyte Membrane Fuel Cells. ACS Nano 2017; 11:5944-5949. [PMID: 28541662 DOI: 10.1021/acsnano.7b01720] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Understanding the function of nanoporous materials employed in polymer electrolyte membrane fuel cells (PEMFCs) is crucial to improve their performance, durability, and cost efficiency. Up to now, the water distribution in the nm-sized pore structures was hardly accessible during operation of the cells. Here we demonstrate that phase contrast synchrotron X-ray tomography allows for an in operando quantification of the three-dimensional water distribution within the nm-sized pores of carbon-based microporous layers (MPLs). For this purpose, a fuel cell design optimized for tomographic phase contrast measurements was realized. Water in the pores of the entire MPL was detected and quantified. We found an inhomogeneous distribution of the local water saturation and a sharp boundary between mostly filled MPL and almost empty areas. We attribute the latter observation to the two-phase boundary created because condensation takes place predominantly on one side of the boundary. Furthermore, high water saturation in large areas hints at gas diffusion or transport along preferred three-dimensional paths through the material, therefore bypassing most of the MPL volume. Our approach may contribute significantly to future investigations of nanoporous fuel cell materials under realistic operating conditions.
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Affiliation(s)
- Saad S Alrwashdeh
- Helmholtz-Zentrum Berlin , Hahn-Meitner-Platz 1, 14109 Berlin, Germany
- Mechanical Engineering Department, Faculty of Engineering, Mu'tah University , P.O Box 7, Al-Karak 61710, Jordan
- Technische Universität Berlin , Straße des 17. Juni 135, 10623 Berlin, Germany
| | - Ingo Manke
- Helmholtz-Zentrum Berlin , Hahn-Meitner-Platz 1, 14109 Berlin, Germany
| | - Henning Markötter
- Helmholtz-Zentrum Berlin , Hahn-Meitner-Platz 1, 14109 Berlin, Germany
| | - Merle Klages
- Zentrum für Sonnenenergie und Wasserstoff-Forschung Baden Württemberg (ZSW) , Helmholtzstraße 8, 89081 Ulm, Germany
| | - Martin Göbel
- Volkswagen Aktiengesellschaft , 38436 Wolfsburg, Germany
| | - Jan Haußmann
- Zentrum für Sonnenenergie und Wasserstoff-Forschung Baden Württemberg (ZSW) , Helmholtzstraße 8, 89081 Ulm, Germany
| | - Joachim Scholta
- Zentrum für Sonnenenergie und Wasserstoff-Forschung Baden Württemberg (ZSW) , Helmholtzstraße 8, 89081 Ulm, Germany
| | - John Banhart
- Helmholtz-Zentrum Berlin , Hahn-Meitner-Platz 1, 14109 Berlin, Germany
- Technische Universität Berlin , Straße des 17. Juni 135, 10623 Berlin, Germany
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