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Sadykov V, Pikalova E, Sadovskaya E, Shlyakhtina A, Filonova E, Eremeev N. Design of Mixed Ionic-Electronic Materials for Permselective Membranes and Solid Oxide Fuel Cells Based on Their Oxygen and Hydrogen Mobility. MEMBRANES 2023; 13:698. [PMID: 37623759 PMCID: PMC10456803 DOI: 10.3390/membranes13080698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 07/23/2023] [Accepted: 07/25/2023] [Indexed: 08/26/2023]
Abstract
Oxygen and hydrogen mobility are among the important characteristics for the operation of solid oxide fuel cells, permselective membranes and many other electrochemical devices. This, along with other characteristics, enables a high-power density in solid oxide fuel cells due to reducing the electrolyte resistance and enabling the electrode processes to not be limited by the electrode-electrolyte-gas phase triple-phase boundary, as well as providing high oxygen or hydrogen permeation fluxes for membranes due to a high ambipolar conductivity. This work focuses on the oxygen and hydrogen diffusion of mixed ionic (oxide ionic or/and protonic)-electronic conducting materials for these devices, and its role in their performance. The main laws of bulk diffusion and surface exchange are highlighted. Isotope exchange techniques allow us to study these processes in detail. Ionic transport properties of conventional and state-of-the-art materials including perovskites, Ruddlesden-Popper phases, fluorites, pyrochlores, composites, etc., are reviewed.
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Affiliation(s)
- Vladislav Sadykov
- Federal Research Center, Boreskov Institute of Catalysis SB RAS, 630090 Novosibirsk, Russia; (E.S.); (N.E.)
| | - Elena Pikalova
- Institute of High Temperature Electrochemistry UB RAS, 620137 Yekaterinburg, Russia;
- Graduate School of Economics and Management, Ural Federal University, 620002 Yekaterinburg, Russia
| | - Ekaterina Sadovskaya
- Federal Research Center, Boreskov Institute of Catalysis SB RAS, 630090 Novosibirsk, Russia; (E.S.); (N.E.)
| | - Anna Shlyakhtina
- Federal Research Center, Semenov Institute of Chemical Physics RAS, 119991 Moscow, Russia;
| | - Elena Filonova
- Institute of Natural Sciences and Mathematics, Ural Federal University, 620002 Yekaterinburg, Russia;
| | - Nikita Eremeev
- Federal Research Center, Boreskov Institute of Catalysis SB RAS, 630090 Novosibirsk, Russia; (E.S.); (N.E.)
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Kamgang-Syapnjeu P, Njoya D, Kamseu E, Balme S, Bechelany M, Soussan L. Bio-Based Ceramic Membranes for Bacteria Removal from Water. MEMBRANES 2022; 12:901. [PMID: 36135919 PMCID: PMC9506390 DOI: 10.3390/membranes12090901] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Revised: 09/11/2022] [Accepted: 09/12/2022] [Indexed: 06/16/2023]
Abstract
Bio-based ceramic membranes were elaborated from kaolinite clays, coconut husks and eggshells to retain E. coli bacteria present in water intended for human consumption. Their characterization and removal performances are investigated in this work. These bio-ceramic membranes were obtained by heating the formulation containing 75% clay, 15% coconut husk and 10% eggshell at 900 °C or 1000 °C, at different temperature rates, to give S1, S2 and S3 materials. Thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC), mercury porosimetry and scanning electron microscopy (SEM) were used to characterize these membranes. Water flux density, bacterial removal and biofouling were also assessed. Water flux density was shown to depend on material porosity. Bacteria retention was 90% (with 1 log-removal) for S1, 80% (with 0.7 log-removal) for S2 and 100% (with 3.3 log-removal) for S3. Membranes S1 and S2 presented reversible biofouling, while no fouling was evidenced for S3 in the tested conditions. This work shows that the best bio-ceramic membrane in terms of bacterial removal and flux density was S3. Its water flux density was 2123 ± 72 L/h/m2 at an initial pressure of 0.2 bar. This material is particularly interesting because its production protocol is quite simple, fast and without the addition of chemical additives. Moreover, it can be used to efficiently remove bacteria from drinking water.
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Affiliation(s)
- Pelagie Kamgang-Syapnjeu
- Laboratory of Applied Inorganic Chemistry, Faculty of Sciences, University of Yaounde 1, Yaounde P.O. Box 812, Cameroon
| | - Dayirou Njoya
- Laboratory of Applied Inorganic Chemistry, Faculty of Sciences, University of Yaounde 1, Yaounde P.O. Box 812, Cameroon
| | - Elie Kamseu
- Laboratory of Materials Analysis, Mission de Promotion des Matériaux Locaux (MIPROMALO), Yaounde P.O. Box 2396, Cameroon
| | - Sebastien Balme
- Institut Européen des Membranes, IEM UMR 5635, Univ. Montpellier, ENSCM, CNRS, 34090 Montpellier, France
| | - Mikhael Bechelany
- Institut Européen des Membranes, IEM UMR 5635, Univ. Montpellier, ENSCM, CNRS, 34090 Montpellier, France
| | - Laurence Soussan
- Institut Européen des Membranes, IEM UMR 5635, Univ. Montpellier, ENSCM, CNRS, 34090 Montpellier, France
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The Development of New Perovskite-Type Oxygen Transport Membranes Using Machine Learning. CRYSTALS 2022. [DOI: 10.3390/cryst12070947] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The aim of this work is to predict suitable chemical compositions for the development of new ceramic oxygen gas separation membranes, avoiding doping with toxic cobalt or expensive rare earths. For this purpose, we have chosen the system Sr1−xBax(Ti1−y−zVyFez)O3−δ (cubic perovskite-type phases). We have evaluated available experimental data, determined missing crystallographic information using bond-valence modeling and programmed a Python code to be able to generate training data sets for property predictions using machine learning. Indeed, suitable compositions of cubic perovskite-type phases can be predicted in this way, allowing for larger electronic conductivities of up to σe = 1.6 S/cm and oxygen conductivities of up to σi = 0.008 S/cm at T = 1173 K and an oxygen partial pressure pO2 = 10−15 bar, thus enabling practical applications.
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Surface Optimization of Commercial Porous Ti Substrates by EPD of Titanium Nitride. MEMBRANES 2022; 12:membranes12050531. [PMID: 35629857 PMCID: PMC9144476 DOI: 10.3390/membranes12050531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 05/15/2022] [Accepted: 05/17/2022] [Indexed: 02/05/2023]
Abstract
In this work, the infiltration of TiN powders by electrophoretic deposition (EPD) in aqueous media was considered as alternative method to reduce the size craters and the roughness of commercial porous Ti substrates. Ti substrates can be used as suitable supports for the deposition of dense hydrogen separation TiNx-based membranes by physical vapor deposition (PVD) techniques. The influence of various EPD deposition parameters on surface morphology and roughness of TiN-infiltrated substrates were investigated in order to optimize their surface properties. The results suggest that a multi-step EPD procedure is an effective technique for reducing substrate surface defects of commercial porous Ti substrates which could then be successfully used as proper supports for the deposition of dense and defect-free TiNx layers, also aligning the thermal mismatch between the active layer and the porous substrate.
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Development of H2 selective silica membranes: Performance evaluation through single gas permeation and gas separation tests. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118432] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Mortalò C, Deambrosis SM, Montagner F, Zin V, Fabrizio M, Pasquali L, Capelli R, Montecchi M, Miorin E. Production Strategies of TiN x Coatings via Reactive High Power Impulse Magnetron Sputtering for Selective H 2 Separation. MEMBRANES 2021; 11:membranes11050360. [PMID: 34063392 PMCID: PMC8156242 DOI: 10.3390/membranes11050360] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 05/11/2021] [Accepted: 05/13/2021] [Indexed: 11/16/2022]
Abstract
This scientific work aims to optimize the preparation of titanium nitride coatings for selective H2 separation using the Reactive High Power Impulse Magnetron Sputtering technology (RHiPIMS). Currently, nitride-based thin films are considered promising membranes for hydrogen. The first series of TiNx/Si test samples were developed while changing the reactive gas percentage (N2%) during the process. Obtained coatings were extensively characterized in terms of morphology, composition, and microstructure. A 500 nm thick, dense TiNx coating was then deposited on a porous alumina substrate and widely investigated. Moreover, the as-prepared TiNx films were heat-treated in an atmosphere containing hydrogen in order to prove their chemical and structural stability; which revealed to be promising. This study highlighted how the RHiPIMS method permits fine control of the grown layer's stoichiometry and microstructure. Moreover, it pointed out the need for a protective layer to prevent surface oxidation of the nitride membrane by air and the necessity to deepen the study of TiNx/alumina interface in order to improve film/substrate adhesion.
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Affiliation(s)
- Cecilia Mortalò
- National Research Council of Italy—CNR, Institute of Condensed Matter Chemistry and Technologies for Energy—ICMATE, Corso Stati Uniti 4, 35127 Padova, Italy; (C.M.); (F.M.); (V.Z.); (M.F.); (E.M.)
| | - Silvia Maria Deambrosis
- National Research Council of Italy—CNR, Institute of Condensed Matter Chemistry and Technologies for Energy—ICMATE, Corso Stati Uniti 4, 35127 Padova, Italy; (C.M.); (F.M.); (V.Z.); (M.F.); (E.M.)
- Correspondence: ; Tel.: +39-049-892-5871
| | - Francesco Montagner
- National Research Council of Italy—CNR, Institute of Condensed Matter Chemistry and Technologies for Energy—ICMATE, Corso Stati Uniti 4, 35127 Padova, Italy; (C.M.); (F.M.); (V.Z.); (M.F.); (E.M.)
| | - Valentina Zin
- National Research Council of Italy—CNR, Institute of Condensed Matter Chemistry and Technologies for Energy—ICMATE, Corso Stati Uniti 4, 35127 Padova, Italy; (C.M.); (F.M.); (V.Z.); (M.F.); (E.M.)
| | - Monica Fabrizio
- National Research Council of Italy—CNR, Institute of Condensed Matter Chemistry and Technologies for Energy—ICMATE, Corso Stati Uniti 4, 35127 Padova, Italy; (C.M.); (F.M.); (V.Z.); (M.F.); (E.M.)
- National Research Council of Italy—CNR, Engineering ICT and Technologies for Energy and Transportation Department, Piazzale A, Moro 7, 00185 Roma, Italy
| | - Luca Pasquali
- Dipartimento di Ingegneria E. Ferrari, Università di Modena e Reggio Emilia, via Vivarelli 10, 41125 Modena, Italy; (L.P.); (R.C.); (M.M.)
- IOM-CNR, s.s. 14, Km. 163.5 in AREA Science Park, Basovizza, 34149 Trieste, Italy
- Department of Physics, University of Johannesburg, P.O. Box 524, Auckland Park 2006, South Africa
| | - Raffaella Capelli
- Dipartimento di Ingegneria E. Ferrari, Università di Modena e Reggio Emilia, via Vivarelli 10, 41125 Modena, Italy; (L.P.); (R.C.); (M.M.)
- IOM-CNR, s.s. 14, Km. 163.5 in AREA Science Park, Basovizza, 34149 Trieste, Italy
- Department of Physics, University of Johannesburg, P.O. Box 524, Auckland Park 2006, South Africa
| | - Monica Montecchi
- Dipartimento di Ingegneria E. Ferrari, Università di Modena e Reggio Emilia, via Vivarelli 10, 41125 Modena, Italy; (L.P.); (R.C.); (M.M.)
| | - Enrico Miorin
- National Research Council of Italy—CNR, Institute of Condensed Matter Chemistry and Technologies for Energy—ICMATE, Corso Stati Uniti 4, 35127 Padova, Italy; (C.M.); (F.M.); (V.Z.); (M.F.); (E.M.)
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Farnam M, bin Mukhtar H, bin Mohd Shariff A. A Review on Glassy and Rubbery Polymeric Membranes for Natural Gas Purification. CHEMBIOENG REVIEWS 2021. [DOI: 10.1002/cben.202100002] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Marjan Farnam
- Polymer Engineering Division Vancouver British Columbia Canada
| | - Hilmi bin Mukhtar
- Universiti Teknologi PETRONAS Department of Chemical Engineering, Seri Iskandar 32610 Perak Darul Ridzuan Malaysia
| | - Azmi bin Mohd Shariff
- Universiti Teknologi PETRONAS Department of Chemical Engineering, Seri Iskandar 32610 Perak Darul Ridzuan Malaysia
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Douloudi M, Nikoli E, Katsika T, Vardavoulias M, Arkas M. Dendritic Polymers as Promising Additives for the Manufacturing of Hybrid Organoceramic Nanocomposites with Ameliorated Properties Suitable for an Extensive Diversity of Applications. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 11:E19. [PMID: 33374206 PMCID: PMC7823723 DOI: 10.3390/nano11010019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 12/19/2020] [Accepted: 12/20/2020] [Indexed: 12/12/2022]
Abstract
As the field of nanoscience is rapidly evolving, interest in novel, upgraded nanomaterials with combinatory features is also inevitably increasing. Hybrid composites, offer simple, budget-conscious and environmental-friendly solutions that can cater multiple needs at the same time and be applicable in many nanotechnology-related and interdisciplinary studies. The physicochemical idiocrasies of dendritic polymers have inspired their implementation as sorbents, active ingredient carriers and templates for complex composites. Ceramics are distinguished for their mechanical superiority and absorption potential that render them ideal substrates for separation and catalysis technologies. The integration of dendritic compounds to these inorganic hosts can be achieved through chemical attachment of the organic moiety onto functionalized surfaces, impregnation and absorption inside the pores, conventional sol-gel reactions or via biomimetic mediation of dendritic matrices, inducing the formation of usually spherical hybrid nanoparticles. Alternatively, dendritic polymers can propagate from ceramic scaffolds. All these variants are covered in detail. Optimization techniques as well as established and prospected applications are also presented.
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Affiliation(s)
- Marilina Douloudi
- Institute of Nanoscience Nanotechnology, NCSR “Demokritos”, Patriarchou Gregoriou Street, 15310 Athens, Greece; (E.N.); (T.K.)
| | - Eleni Nikoli
- Institute of Nanoscience Nanotechnology, NCSR “Demokritos”, Patriarchou Gregoriou Street, 15310 Athens, Greece; (E.N.); (T.K.)
| | - Theodora Katsika
- Institute of Nanoscience Nanotechnology, NCSR “Demokritos”, Patriarchou Gregoriou Street, 15310 Athens, Greece; (E.N.); (T.K.)
| | | | - Michael Arkas
- Institute of Nanoscience Nanotechnology, NCSR “Demokritos”, Patriarchou Gregoriou Street, 15310 Athens, Greece; (E.N.); (T.K.)
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Processing Ceramic Proton Conductor Membranes for Use in Steam Electrolysis. MEMBRANES 2020; 10:membranes10110339. [PMID: 33198304 PMCID: PMC7696768 DOI: 10.3390/membranes10110339] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 11/08/2020] [Accepted: 11/09/2020] [Indexed: 11/25/2022]
Abstract
Steam electrolysis constitutes a prospective technology for industrial-scale hydrogen production. The use of ceramic proton-conducting electrolytes is a beneficial option for lowering the operating temperature. However, a significant challenge with this type of electrolyte has been upscaling robust planar type devices. The fabrication of such multi-layered devices, usually via a tape casting process, requires careful control of individual layers’ shrinkages to prevent warping and cracks during sintering. The present work highlights the successful processing of 50 × 50 mm2 planar electrode-supported barium cerium yttrium zirconate BaZr0.44Ce0.36Y0.2O2.9 (BZCY(54)8/92) half cells via a sequential tape casting approach. The sintering parameters of the half-cells were analyzed and adjusted to obtain defect-free half-cells with diminished warping. Suitably dense and gas-tight electrolyte layers are obtained after co-sintering at 1350 °C for 5 h. We then assembled an electrolysis cell using Ba0.5La0.5CoO3−δ as the steam electrode, screen printed on the electrolyte layer, and fired at 800 °C. A typical Ba0.5La0.5CoO3−δ|BaZr0.44Ce0.36Y0.2O3−δ(15 μm)|NiO-SrZr0.5Ce0.4Y0.1O3−δ cell at 600 °C with 80% steam in the anode compartment reached reproducible terminal voltages of 1.4 V @ 500 mA·cm−2, achieving ~84% Faradaic efficiency. Besides electrochemical characterization, the morphology and microstructure of the layered half-cells were analyzed by a combination of high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) and energy-dispersive X-ray spectroscopy. Our results also provide a feasible approach for realizing the low-cost fabrication of large-sized protonic ceramic conducting electrolysis cells (PCECs).
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Porous Functionally Graded Plates: An Assessment of the Influence of Shear Correction Factor on Static Behavior. MATHEMATICAL AND COMPUTATIONAL APPLICATIONS 2020. [DOI: 10.3390/mca25020025] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The known multifunctional characteristic of porous graded materials makes them very attractive in a number of diversified application fields, which simultaneously poses the need to deepen research efforts in this broad field. The study of functionally graded porous materials is a research topic of interest, particularly concerning the modeling of porosity distributions and the corresponding estimations of their material properties—in both real situations and from a material modeling perspective. This work aims to assess the influence of different porosity distribution approaches on the shear correction factor, used in the context of the first-order shear deformation theory, which in turn may introduce significant effects in a structure’s behavior. To this purpose, we evaluated porous functionally graded plates with varying composition through their thickness. The bending behavior of these plates was studied using the finite element method with two quadrilateral plate element models. Verification studies were performed to assess the representativeness of the developed and implemented models, namely, considering an alternative higher-order model also employed for this specific purpose. Comparative analyses were developed to assess how porosity distributions influence the shear correction factor, and ultimately the static behavior, of the plates.
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