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Morales M, Rezayat M, García-González S, Mateo A, Jiménez-Piqué E. Ru-Ce 0.7Zr 0.3O 2-δ as an Anode Catalyst for the Internal Reforming of Dimethyl Ether in Solid Oxide Fuel Cells. Nanomaterials (Basel) 2024; 14:603. [PMID: 38607137 PMCID: PMC11013270 DOI: 10.3390/nano14070603] [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: 02/19/2024] [Revised: 03/19/2024] [Accepted: 03/21/2024] [Indexed: 04/13/2024]
Abstract
The development of direct dimethyl ether (DME) solid oxide fuel cells (SOFCs) has several drawbacks, due to the low catalytic activity and carbon deposition of conventional Ni-zirconia-based anodes. In the present study, the insertion of 2.0 wt.% Ru-Ce0.7Zr0.3O2-δ (ruthenium-zirconium-doped ceria, Ru-CZO) as an anode catalyst layer (ACL) is proposed to be a promising solution. For this purpose, the CZO powder was prepared by the sol-gel synthesis method, and subsequently, nanoparticles of Ru (1.0-2.0 wt.%) were synthesized by the impregnation method and calcination. The catalyst powder was characterized by BET-specific surface area, X-ray diffraction (XRD), field emission scanning electron microscopy with an energy-dispersive spectroscopy detector (FESEM-EDS), and transmission electron microscopy (TEM) techniques. Afterward, the catalytic activity of Ru-CZO catalyst was studied using DME partial oxidation. Finally, button anode-supported SOFCs with Ru-CZO ACL were prepared, depositing Ru-CZO onto the anode support and using an annealing process. The effect of ACL on the electrochemical performance of cells was investigated under a DME and air mixture at 750 °C. The results showed a high dispersion of Ru in the CZO solid solution, which provided a complete DME conversion and high yields of H2 and CO at 750 °C. As a result, 2.0 wt.% Ru-CZO ACL enhanced the cell performance by more than 20% at 750 °C. The post-test analysis of cells with ACL proved a remarkable resistance of Ru-CZO ACL to carbon deposition compared to the reference cell, evidencing the potential application of Ru-CZO as a catalyst as well as an ACL for direct DME SOFCs.
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Affiliation(s)
- Miguel Morales
- Structural Integrity and Materials Reliability Centre (CIEFMA), Department of Materials Science and Engineering, EEBE—Campus Diagonal Besòs, Universitat Politècnica de Catalunya—BarcelonaTech, C/Eduard Maristany, 16, 08019 Barcelona, Spain; (M.R.); (S.G.-G.); (A.M.); (E.J.-P.)
- Barcelona Research Center in Multiscale Science and Engineering, EEBE—Campus Diagonal Besòs, Universitat Politècnica de Catalunya—BarcelonaTech, C/Eduard Maristany, 16, 08019 Barcelona, Spain
| | - Mohammad Rezayat
- Structural Integrity and Materials Reliability Centre (CIEFMA), Department of Materials Science and Engineering, EEBE—Campus Diagonal Besòs, Universitat Politècnica de Catalunya—BarcelonaTech, C/Eduard Maristany, 16, 08019 Barcelona, Spain; (M.R.); (S.G.-G.); (A.M.); (E.J.-P.)
- Barcelona Research Center in Multiscale Science and Engineering, EEBE—Campus Diagonal Besòs, Universitat Politècnica de Catalunya—BarcelonaTech, C/Eduard Maristany, 16, 08019 Barcelona, Spain
| | - Sandra García-González
- Structural Integrity and Materials Reliability Centre (CIEFMA), Department of Materials Science and Engineering, EEBE—Campus Diagonal Besòs, Universitat Politècnica de Catalunya—BarcelonaTech, C/Eduard Maristany, 16, 08019 Barcelona, Spain; (M.R.); (S.G.-G.); (A.M.); (E.J.-P.)
- Barcelona Research Center in Multiscale Science and Engineering, EEBE—Campus Diagonal Besòs, Universitat Politècnica de Catalunya—BarcelonaTech, C/Eduard Maristany, 16, 08019 Barcelona, Spain
| | - Antonio Mateo
- Structural Integrity and Materials Reliability Centre (CIEFMA), Department of Materials Science and Engineering, EEBE—Campus Diagonal Besòs, Universitat Politècnica de Catalunya—BarcelonaTech, C/Eduard Maristany, 16, 08019 Barcelona, Spain; (M.R.); (S.G.-G.); (A.M.); (E.J.-P.)
- Barcelona Research Center in Multiscale Science and Engineering, EEBE—Campus Diagonal Besòs, Universitat Politècnica de Catalunya—BarcelonaTech, C/Eduard Maristany, 16, 08019 Barcelona, Spain
| | - Emilio Jiménez-Piqué
- Structural Integrity and Materials Reliability Centre (CIEFMA), Department of Materials Science and Engineering, EEBE—Campus Diagonal Besòs, Universitat Politècnica de Catalunya—BarcelonaTech, C/Eduard Maristany, 16, 08019 Barcelona, Spain; (M.R.); (S.G.-G.); (A.M.); (E.J.-P.)
- Barcelona Research Center in Multiscale Science and Engineering, EEBE—Campus Diagonal Besòs, Universitat Politècnica de Catalunya—BarcelonaTech, C/Eduard Maristany, 16, 08019 Barcelona, Spain
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Duan YJ, Nabahat M, Tong Y, Ortiz-Membrado L, Jiménez-Piqué E, Zhao K, Wang YJ, Yang Y, Wada T, Kato H, Pelletier JM, Qiao JC, Pineda E. Connection between Mechanical Relaxation and Equilibration Kinetics in a High-Entropy Metallic Glass. Phys Rev Lett 2024; 132:056101. [PMID: 38364152 DOI: 10.1103/physrevlett.132.056101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 11/08/2023] [Accepted: 11/17/2023] [Indexed: 02/18/2024]
Abstract
The slow transition from an out-of-equilibrium glass towards a supercooled liquid is a complex relaxation phenomenon. In this Letter, we study the correlation between mechanical relaxation and equilibration kinetics in a Pd_{20}Pt_{20}Cu_{20}Ni_{20}P_{20} high-entropy metallic glass. The evolution of stress relaxation with aging time was obtained with an unprecedented detail, allowing us to pinpoint new interesting features. The long structural relaxation towards equilibrium contains a wide distribution of activation energies, instead of being just associated to the β relaxation as commonly accepted. The stress relaxation time can be correlated with the equilibration rate and we observe a decrease of microstructural heterogeneity which contrasts with an increase of dynamic heterogeneity. These results significantly enhance our insight of the interplay between relaxation dynamics and thermodynamics in metallic glasses.
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Affiliation(s)
- Y J Duan
- School of Mechanics, Civil Engineering and Architecture, Northwestern Polytechnical University, Xi'an 710072, China
- Department of Physics, Institute of Energy Technologies, Universitat Politècnica de Catalunya, Barcelona 08019, Spain
| | - M Nabahat
- Department of Physics, Institute of Energy Technologies, Universitat Politècnica de Catalunya, Barcelona 08019, Spain
| | - Yu Tong
- CAS Key Laboratory of Magnetic Materials and Devices, and Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - L Ortiz-Membrado
- Department of Materials Science, Universitat Politècnica de Catalunya, Barcelona 08019, Spain
| | - E Jiménez-Piqué
- Department of Materials Science, Universitat Politècnica de Catalunya, Barcelona 08019, Spain
| | - Kun Zhao
- State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China
- School of Engineering Science, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yun-Jiang Wang
- State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China
- School of Engineering Science, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Y Yang
- Department of Mechanical Engineering, College of Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Kowloon, Hong Kong SAR, China
- Department of Materials Science and Engineering, College of Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Kowloon, Hong Kong SAR, China
| | - T Wada
- Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - H Kato
- Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - J M Pelletier
- Université de Lyon, MATEIS, UMR CNRS5510, Bâtiment Blaise Pascal, INSA-Lyon, F-69621 Villeurbanne Cedex, France
| | - J C Qiao
- School of Mechanics, Civil Engineering and Architecture, Northwestern Polytechnical University, Xi'an 710072, China
| | - E Pineda
- Department of Physics, Institute of Energy Technologies, Universitat Politècnica de Catalunya, Barcelona 08019, Spain
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Colombi S, Macor LP, Ortiz-Membrado L, Pérez-Amodio S, Jiménez-Piqué E, Engel E, Pérez-Madrigal MM, García-Torres J, Alemán C. Enzymatic Degradation of Polylactic Acid Fibers Supported on a Hydrogel for Sustained Release of Lactate. ACS Appl Bio Mater 2023; 6:3889-3901. [PMID: 37608579 DOI: 10.1021/acsabm.3c00546] [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] [Indexed: 08/24/2023]
Abstract
The incorporation of exogenous lactate into cardiac tissues is a regenerative strategy that is rapidly gaining attention. In this work, two polymeric platforms were designed to achieve a sustained release of lactate, combining immediate and prolonged release profiles. Both platforms contained electrospun poly(lactic acid) (PLA) fibers and an alginate (Alg) hydrogel. In the first platform, named L/K(x)/Alg-PLA, lactate and proteinase K (x mg of enzyme per 1 g of PLA) were directly loaded into the Alg hydrogel, into which PLA fibers were assembled. In the second platform, L/Alg-K(x)/PLA, fibers were produced by electrospinning a proteinase K:PLA solution and, subsequently, assembled within the lactate-loaded hydrogel. After characterizing the chemical, morphological, and mechanical properties of the systems, as well as their cytotoxicity, the release profiles of the two platforms were determined considering different amounts of proteinase K (x = 5.2, 26, and 52 mg of proteinase K per 1 g of PLA), which is known to exhibit a broad cleavage activity. The profiles obtained using L/Alg-K(x)/PLA platforms with x = 26 and 52 were the closest to the criteria that must be met for cardiac tissue regeneration. Finally, the amount of lactate directly loaded in the Alg hydrogel for immediate release and the amount of protein in the electrospinning solution were adapted to achieve a constant lactate release of around 6 mM per day over 1 or 2 weeks. In the optimized bioplatform, in which 6 mM lactate was loaded in the hydrogel, the amount of fibers was increased by a factor of ×3, the amount of enzyme was adjusted to 40 mg per 1 g of PLA, and a daily lactate release of 5.9 ± 2.7 mM over a period of 11 days was achieved. Accordingly, the engineered device fully satisfied the characteristics and requirements for heart tissue regeneration.
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Affiliation(s)
- Samuele Colombi
- IMEM-BRT Group, Departament d'Enginyeria Química, EEBE, Universitat Politècnica de Catalunya─BarcelonaTech, C/Eduard Maristany, 10-14, 08019 Barcelona, Spain
- Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya─BarcelonaTech, 08930 Barcelona, Spain
| | - Lorena P Macor
- IMEM-BRT Group, Departament d'Enginyeria Química, EEBE, Universitat Politècnica de Catalunya─BarcelonaTech, C/Eduard Maristany, 10-14, 08019 Barcelona, Spain
- IITEMA-CONICET, Departamento de Química, Facultad de Ciencias Exactas Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Agencia Postal Nro. 3, X5804BYA Río Cuarto, Córdoba, Argentina
| | - Laia Ortiz-Membrado
- CIEFMA, Department of Materials Science and Engineering, Universitat Politècnica de Catalunya─BarcelonaTech, Campus Diagonal Besos-EEBE, 08019 Barcelona, Spain
| | - Soledad Pérez-Amodio
- IMEM-BRT Group, Departament de Ciència i Enginyeria de Materials, EEBE, Universitat Politècnica de Catalunya (UPC), C/Eduard Maristany 10-14, 08019 Barcelona, Spain
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology, Baldiri Reixac 10-12, 08028 Barcelona, Spain
- CIBER en Bioingeniería, Biomateriales y Nanomedicina, CIBER-BBN, 50018 Zaragoza, Spain
| | - Emilio Jiménez-Piqué
- Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya─BarcelonaTech, 08930 Barcelona, Spain
- CIEFMA, Department of Materials Science and Engineering, Universitat Politècnica de Catalunya─BarcelonaTech, Campus Diagonal Besos-EEBE, 08019 Barcelona, Spain
| | - Elisabeth Engel
- IMEM-BRT Group, Departament de Ciència i Enginyeria de Materials, EEBE, Universitat Politècnica de Catalunya (UPC), C/Eduard Maristany 10-14, 08019 Barcelona, Spain
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology, Baldiri Reixac 10-12, 08028 Barcelona, Spain
- CIBER en Bioingeniería, Biomateriales y Nanomedicina, CIBER-BBN, 50018 Zaragoza, Spain
| | - Maria M Pérez-Madrigal
- IMEM-BRT Group, Departament d'Enginyeria Química, EEBE, Universitat Politècnica de Catalunya─BarcelonaTech, C/Eduard Maristany, 10-14, 08019 Barcelona, Spain
- Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya─BarcelonaTech, 08930 Barcelona, Spain
| | - José García-Torres
- Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya─BarcelonaTech, 08930 Barcelona, Spain
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Universitat Politècnica de Catalunya (UPC), 08019 Barcelona, Spain
| | - Carlos Alemán
- IMEM-BRT Group, Departament d'Enginyeria Química, EEBE, Universitat Politècnica de Catalunya─BarcelonaTech, C/Eduard Maristany, 10-14, 08019 Barcelona, Spain
- Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya─BarcelonaTech, 08930 Barcelona, Spain
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology, Baldiri Reixac 10-12, 08028 Barcelona, Spain
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Morales M, Laguna-Bercero MÁ, Jiménez-Piqué E. Hydrogen-Rich Gas Production by Steam Reforming and Oxidative Steam Reforming of Methanol over La 0.6Sr 0.4CoO 3-δ: Effects of Preparation, Operation Conditions, and Redox Cycles. ACS Appl Energy Mater 2023; 6:7887-7898. [PMID: 37592929 PMCID: PMC10431340 DOI: 10.1021/acsaem.3c00778] [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] [Figures] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Accepted: 07/10/2023] [Indexed: 08/19/2023]
Abstract
La0.6Sr0.4CoO3-δ (LSC) perovskite, as a potential catalyst precursor for hydrogen (H2)-rich production by steam reforming of methanol (SRM) and oxidative steam reforming of methanol (OSRM), was investigated. For this purpose, LSC was synthesized by the citrate sol-gel method and characterized by complementary analytical techniques. The catalytic activity was studied for the as-prepared and prereduced LSC and compared with the undoped LaCoO3-δ (LCO) at several feed gas compositions. Furthermore, the degradation and regeneration of LSC under repeated redox cycles were studied. The results evidenced that the increase in the water/methanol ratio under SRM, and the O2 addition under OSRM, increased the CO2 formation and decreased both the H2 selectivity and catalyst deactivation caused by carbon deposition. Methanol conversion of the prereduced LSC was significantly enhanced at a lower temperature than that of as-prepared LSC and undoped LCO. This was attributed to the performance of metallic cobalt nanoparticles highly dispersed under reducing atmospheres. The reoxidation program in repetitive redox cycles played a crucial role in the regeneration of catalysts, which could be regenerated to the initial perovskite structure under a specific thermal treatment, minimizing the degradation of the catalytic activity and surface.
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Affiliation(s)
- Miguel Morales
- CIEFMA—Department
of Materials Science and Engineering, EEBE—Campus Diagonal
Besòs, Universitat Politècnica
de Catalunya—BarcelonaTech, C/Eduard Maristany 16, 08019 Barcelona, Spain
- Barcelona
Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya—BarcelonaTech, C/Eduard Maristany 16, 08019 Barcelona, Spain
| | - Miguel Ángel Laguna-Bercero
- Instituto
de Nanociencia y Materiales de Aragón, INMA, CSIC, Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Emilio Jiménez-Piqué
- CIEFMA—Department
of Materials Science and Engineering, EEBE—Campus Diagonal
Besòs, Universitat Politècnica
de Catalunya—BarcelonaTech, C/Eduard Maristany 16, 08019 Barcelona, Spain
- Barcelona
Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya—BarcelonaTech, C/Eduard Maristany 16, 08019 Barcelona, Spain
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5
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Liang J, Almandoz E, Ortiz-Membrado L, Rodríguez R, de Ara JF, Fuentes GG, Llanes L, Jiménez-Piqué E. Mechanical Performance of AlCrSiN and AlTiSiN Coatings on Inconel and Steel Substrates after Thermal Treatments. Materials (Basel) 2022; 15:8605. [PMID: 36500100 PMCID: PMC9741020 DOI: 10.3390/ma15238605] [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] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 11/01/2022] [Accepted: 11/23/2022] [Indexed: 06/17/2023]
Abstract
The objective of this study was to explore the mechanical properties of AlCrSiN and AlTiSiN coatings deposited on Inconel and steel substrates after thermal treatments of 500 °C and 800 °C. Nanoindentation was used to measure the hardness and elastic modulus of the coatings, and microindentation was used for observing the contact damage with Hertzian contact loadings. Microscratch and Mercedes tests were used to evaluate the adhesive strength between coating and substrate with both progressive and static loads, respectively. The surface damage was inspected by optical microscopy and scanning electron microscopy (SEM). Focus ion beams (FIB) were used to mill the cross-sections in order to detect the extent and mode of failure. The results show that AlCrSiN coatings and Inconel substrates exhibit better mechanical performance, even after thermal treatments.
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Affiliation(s)
- Jing Liang
- CIEFMA-Department of Materials Science and Engineering, EEBE, Universitat Politècnica de Catalunya-BarcelonaTECH, Avda. Eduard Maristany 16, 08019 Barcelona, Spain
| | - Eluxka Almandoz
- Centre of Advanced Surface Engineering, AIN, Cordovilla, 31191 Navarra, Spain
- Science Department, Universidad Pública de Navarra (UPNA), Campus de Arrosadía, 31006 Pamplona, Spain
| | - Laia Ortiz-Membrado
- CIEFMA-Department of Materials Science and Engineering, EEBE, Universitat Politècnica de Catalunya-BarcelonaTECH, Avda. Eduard Maristany 16, 08019 Barcelona, Spain
| | - Rafael Rodríguez
- Institute for Advanced Materials and Mathematics (INAMAT2), Universidad Pública de Navarra (UPNA), Campus de Arrosadía, 31006 Pamplona, Spain
- Engineering Department, Public University of Navarre, Campus Arrosadía S/N, 31006 Pamplona, Spain
| | | | - Gonzalo G. Fuentes
- Centre of Advanced Surface Engineering, AIN, Cordovilla, 31191 Navarra, Spain
| | - Luis Llanes
- CIEFMA-Department of Materials Science and Engineering, EEBE, Universitat Politècnica de Catalunya-BarcelonaTECH, Avda. Eduard Maristany 16, 08019 Barcelona, Spain
- Barcelona Research Center in Multiscale Science and Engineering-Universitat Politècnica de Catalunya-BarcelonaTECH, Avda. Eduard Maristany 16, 08019 Barcelona, Spain
| | - Emilio Jiménez-Piqué
- CIEFMA-Department of Materials Science and Engineering, EEBE, Universitat Politècnica de Catalunya-BarcelonaTECH, Avda. Eduard Maristany 16, 08019 Barcelona, Spain
- Barcelona Research Center in Multiscale Science and Engineering-Universitat Politècnica de Catalunya-BarcelonaTECH, Avda. Eduard Maristany 16, 08019 Barcelona, Spain
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Besharatloo H, de Nicolás-Morillas M, Chen M, Mateo A, Ferrari B, Gordo E, Jiménez-Piqué E, Wheeler J, Llanes L. Micropillar compression of Ti(C,N)-FeNi cermets: Microstructural, processing, and scale effects. Ann Ital Chir 2022. [DOI: 10.1016/j.jeurceramsoc.2022.09.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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García-Mintegui C, Córdoba LC, Buxadera-Palomero J, Marquina A, Jiménez-Piqué E, Ginebra MP, Cortina JL, Pegueroles M. Zn-Mg and Zn-Cu alloys for stenting applications: From nanoscale mechanical characterization to in vitro degradation and biocompatibility. Bioact Mater 2021; 6:4430-4446. [PMID: 34027233 PMCID: PMC8121665 DOI: 10.1016/j.bioactmat.2021.04.015] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [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: 10/25/2020] [Revised: 04/09/2021] [Accepted: 04/13/2021] [Indexed: 12/30/2022] Open
Abstract
In the recent decades, zinc (Zn) and its alloys have been drawing attention as promising candidates for bioresorbable cardiovascular stents due to its degradation rate more suitable than magnesium (Mg) and iron (Fe) alloys. However, its mechanical properties need to be improved in order to meet the criteria for vascular stents. This work investigates the mechanical properties, biodegradability and biocompatibility of Zn-Mg and Zn-Cu alloys in order to determine a proper alloy composition for optimal stent performance. Nanoindentation measurements are performed to characterize the mechanical properties at the nanoscale as a function of the Zn microstructure variations induced by alloying. The biodegradation mechanisms are discussed and correlated to microstructure, mechanical performance and bacterial/cell response. Addition of Mg or Cu alloying elements refined the microstructure of Zn and enhanced yield strength (YS) and ultimate tensile strength (UTS) proportional to the volume fraction of secondary phases. Zn-1Mg showed the higher YS and UTS and better performance in terms of degradation stability in Hanks' solution. Zn-Cu alloys presented an antibacterial effect for S. aureus controlled by diffusion mechanisms and by contact. Biocompatibility was dependent on the degradation rate and the nature of the corrosion products.
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Affiliation(s)
- Claudia García-Mintegui
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Technical University of Catalonia (UPC), Barcelona East School of Engineering (EEBE), 08019, Barcelona, Spain
- Resource Recovery and Environmental Management Group, UPC, EEBE, 08019, Barcelona, Spain
- Barcelona Research Center in Multiscale Science and Engineering, UPC, EEBE, 08019, Barcelona, Spain
| | - Laura Catalina Córdoba
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Technical University of Catalonia (UPC), Barcelona East School of Engineering (EEBE), 08019, Barcelona, Spain
- Institute for Bioengineering of Catalonia (IBEC), 08028, Barcelona, Spain
| | - Judit Buxadera-Palomero
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Technical University of Catalonia (UPC), Barcelona East School of Engineering (EEBE), 08019, Barcelona, Spain
- Barcelona Research Center in Multiscale Science and Engineering, UPC, EEBE, 08019, Barcelona, Spain
| | - Andrea Marquina
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Technical University of Catalonia (UPC), Barcelona East School of Engineering (EEBE), 08019, Barcelona, Spain
| | - Emilio Jiménez-Piqué
- Barcelona Research Center in Multiscale Science and Engineering, UPC, EEBE, 08019, Barcelona, Spain
- Structural Integrity, Micromechanics and Reliability of Materials Group, Department of Materials Science and Engineering, UPC, EEBE, 08019, Barcelona, Spain
| | - Maria-Pau Ginebra
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Technical University of Catalonia (UPC), Barcelona East School of Engineering (EEBE), 08019, Barcelona, Spain
- Barcelona Research Center in Multiscale Science and Engineering, UPC, EEBE, 08019, Barcelona, Spain
- Institute for Bioengineering of Catalonia (IBEC), 08028, Barcelona, Spain
| | - José Luis Cortina
- Resource Recovery and Environmental Management Group, UPC, EEBE, 08019, Barcelona, Spain
- Barcelona Research Center in Multiscale Science and Engineering, UPC, EEBE, 08019, Barcelona, Spain
| | - Marta Pegueroles
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Technical University of Catalonia (UPC), Barcelona East School of Engineering (EEBE), 08019, Barcelona, Spain
- Barcelona Research Center in Multiscale Science and Engineering, UPC, EEBE, 08019, Barcelona, Spain
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Bonamigo Moreira V, Puiggalí-Jou A, Jiménez-Piqué E, Alemán C, Meneguzzi A, Armelin E. Green Nanocoatings Based on the Deposition of Zirconium Oxide: The Role of the Substrate. Materials (Basel) 2021; 14:ma14041043. [PMID: 33672124 PMCID: PMC7926333 DOI: 10.3390/ma14041043] [Citation(s) in RCA: 4] [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] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 02/14/2021] [Accepted: 02/17/2021] [Indexed: 02/06/2023]
Abstract
Herein, the influence of the substrate in the formation of zirconium oxide monolayer, from an aqueous hexafluorozirconic acid solution, by chemical conversion and by electro-assisted deposition, has been approached. The nanoscale dimensions of the ZrO2 film is affected by the substrate nature and roughness. This study evidenced that the mechanism of Zr-EAD is dependent on the potential applied and on the substrate composition, whereas conversion coating is uniquely dependent on the adsorption reaction time. The zirconium oxide based nanofilms were more homogenous in AA2024 substrates if compared to pure Al grade (AA1100). It was justified by the high content of Cu alloying element present in the grain boundaries of the latter. Such intermetallic active sites favor the obtaining of ZrO2 films, as demonstrated by XPS and AFM results. From a mechanistic point of view, the electrochemical reactions take place simultaneously with the conventional chemical conversion process driven by ions diffusion. Such findings will bring new perspectives for the generation of controlled oxide coatings in modified electrodes used, as for example, in the construction of battery cells; in automotive and in aerospace industries, to replace micrometric layers of zinc phosphate by light-weight zirconium oxide nanometric ones. This study is particularly addressed for the reduction of industrial waste by applying green bath solutions without the need of auxiliary compounds and using lightweight ceramic materials.
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Affiliation(s)
- Vitor Bonamigo Moreira
- Department of Chemical Engineering, Universitat Politècnica de Catalunya, Campus Diagonal Besòs (EEBE), C/Eduard Maristany, 10-14, Building I, 2nd Floor, 08019 Barcelona, Spain; (V.B.M.); (A.P.-J.); (C.A.)
- Post-Graduation Program in Mining, Metallurgical and Materials Engineering (PPGE3M), Universidade Federal do Rio Grande do Sul (UFRGS), Av. Bento Gonçalves, 9500–91501-970 Porto Alegre, RS, Brazil;
| | - Anna Puiggalí-Jou
- Department of Chemical Engineering, Universitat Politècnica de Catalunya, Campus Diagonal Besòs (EEBE), C/Eduard Maristany, 10-14, Building I, 2nd Floor, 08019 Barcelona, Spain; (V.B.M.); (A.P.-J.); (C.A.)
- Barcelona Research Center for Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Campus Diagonal Besòs (EEBE), C/Eduard Maristany, 10-14, Building I, Basement Floor, 08019 Barcelona, Spain;
| | - Emilio Jiménez-Piqué
- Barcelona Research Center for Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Campus Diagonal Besòs (EEBE), C/Eduard Maristany, 10-14, Building I, Basement Floor, 08019 Barcelona, Spain;
- Department of Materials Science and Engineering, Universitat Politècnica de Catalunya, Campus Diagonal Besòs-EEBE, C/Eduard Maristany, 10-14, Building I, 1st Floor, 08019 Barcelona, Spain
| | - Carlos Alemán
- Department of Chemical Engineering, Universitat Politècnica de Catalunya, Campus Diagonal Besòs (EEBE), C/Eduard Maristany, 10-14, Building I, 2nd Floor, 08019 Barcelona, Spain; (V.B.M.); (A.P.-J.); (C.A.)
- Barcelona Research Center for Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Campus Diagonal Besòs (EEBE), C/Eduard Maristany, 10-14, Building I, Basement Floor, 08019 Barcelona, Spain;
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology, Baldiri Reixac, 10-12, 08028 Barcelona, Spain
| | - Alvaro Meneguzzi
- Post-Graduation Program in Mining, Metallurgical and Materials Engineering (PPGE3M), Universidade Federal do Rio Grande do Sul (UFRGS), Av. Bento Gonçalves, 9500–91501-970 Porto Alegre, RS, Brazil;
| | - Elaine Armelin
- Department of Chemical Engineering, Universitat Politècnica de Catalunya, Campus Diagonal Besòs (EEBE), C/Eduard Maristany, 10-14, Building I, 2nd Floor, 08019 Barcelona, Spain; (V.B.M.); (A.P.-J.); (C.A.)
- Barcelona Research Center for Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Campus Diagonal Besòs (EEBE), C/Eduard Maristany, 10-14, Building I, Basement Floor, 08019 Barcelona, Spain;
- Correspondence: ; Tel.: +34-934054447
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Roitero E, Anglada M, Mücklich F, Jiménez-Piqué E. Mechanical reliability of dental grade zirconia after laser patterning. J Mech Behav Biomed Mater 2018; 86:257-263. [DOI: 10.1016/j.jmbbm.2018.06.039] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Revised: 06/22/2018] [Accepted: 06/25/2018] [Indexed: 10/28/2022]
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Roitero E, Lasserre F, Anglada M, Mücklich F, Jiménez-Piqué E. A parametric study of laser interference surface patterning of dental zirconia: Effects of laser parameters on topography and surface quality. Dent Mater 2017; 33:e28-e38. [DOI: 10.1016/j.dental.2016.09.040] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Revised: 09/16/2016] [Accepted: 09/27/2016] [Indexed: 12/20/2022]
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Echeverry-Rendón M, Galvis O, Quintero Giraldo D, Pavón J, López-Lacomba JL, Jiménez-Piqué E, Anglada M, Robledo SM, Castaño JG, Echeverría F. Osseointegration improvement by plasma electrolytic oxidation of modified titanium alloys surfaces. J Mater Sci Mater Med 2015; 26:72. [PMID: 25631270 DOI: 10.1007/s10856-015-5408-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2014] [Accepted: 11/06/2014] [Indexed: 06/04/2023]
Abstract
Titanium (Ti) is a material frequently used in orthopedic applications, due to its good mechanical properties and high corrosion resistance. However, formation of a non-adherent fibrous tissue between material and bone drastically could affect the osseointegration process and, therefore, the mechanical stability of the implant. Modifications of topography and configuration of the tissue/material interface is one of the mechanisms to improve that process by manipulating parameters such as morphology and roughness. There are different techniques that can be used to modify the titanium surface; plasma electrolytic oxidation (PEO) is one of those alternatives, which consists of obtaining porous anodic coatings by controlling parameters such as voltage, current, anodizing solution and time of the reaction. From all of the above factors, and based on previous studies that demonstrated that bone cells sense substrates features to grow new tissue, in this work commercially pure Ti (c.p Ti) and Ti6Al4V alloy samples were modified at their surface by PEO in different anodizing solutions composed of H2SO4 and H3PO4 mixtures. Treated surfaces were characterized and used as platforms to grow osteoblasts; subsequently, cell behavior parameters like adhesion, proliferation and differentiation were also studied. Although the results showed no significant differences in proliferation, differentiation and cell biological activity, overall results showed an important influence of topography of the modified surfaces compared with polished untreated surfaces. Finally, this study offers an alternative protocol to modify surfaces of Ti and their alloys in a controlled and reproducible way in which biocompatibility of the material is not compromised and osseointegration would be improved.
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Affiliation(s)
- Mónica Echeverry-Rendón
- Programa de Estudio y Control de Enfermedades Tropicales (PECET), Instituto de Investigaciones Médicas, Facultad de Medicina, Universidad de Antioquia, Calle 70 No. 52-21, Medellín, Colombia,
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Rueda AO, Seuba J, Anglada M, Jiménez-Piqué E. Tomography of indentation cracks in feldspathic dental porcelain on zirconia. Dent Mater 2013; 29:348-56. [DOI: 10.1016/j.dental.2013.01.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2012] [Revised: 11/17/2012] [Accepted: 01/11/2013] [Indexed: 10/27/2022]
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Flores M, Fernández-Francos X, Jiménez-Piqué E, Foix D, Serra À, Ramis X. New epoxy thermosets obtained from diglycidylether of bisphenol a and modified hyperbranched polyesters with long aliphatic chains cured by diisocyanates. POLYM ENG SCI 2012. [DOI: 10.1002/pen.23225] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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