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Ferdov S. Interzeolite Transformation from FAU-to-EDI Type of Zeolite. Molecules 2024; 29:1744. [PMID: 38675564 PMCID: PMC11052343 DOI: 10.3390/molecules29081744] [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: 03/05/2024] [Revised: 03/28/2024] [Accepted: 04/09/2024] [Indexed: 04/28/2024] Open
Abstract
This study reports for the first time the transformation of the pre-made FAU type of zeolite to the EDI type of zeolite. The concentration of the KOH solution controls this interzeolite transformation, which unusually occurs at both room temperature and under hydrothermal conditions. The transformation involves the amorphization and partial dissolution of the parent FAU phase, followed by the crystallization of EDI zeolite. At room temperature, the transformation (11-35 days) provides access to well-shaped nano-sized crystals and hollow hierarchical particles while the hydrothermal synthesis results in faster crystallization (6-27 h). These findings reveal an example of an interzeolite transformation to a potassium zeolite that lacks common composite building units with the parent zeolite phase. Finally, this work also demonstrates the first room-temperature synthesis of EDI zeolite from a gel precursor.
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Affiliation(s)
- Stanislav Ferdov
- Physics Centre of Minho and Porto Universities (CF-UM-UP), University of Minho, 4800-058 Guimarães, Portugal
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2
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Barbosa JC, Correia DM, Fidalgo-Marijuan A, Gonçalves R, Ferdov S, de Zea Bermudez V, Lanceros-Mendez S, Costa CM. High Performance Ternary Solid Polymer Electrolytes Based on High Dielectric Poly(vinylidene fluoride) Copolymers for Solid State Lithium-Ion Batteries. ACS Appl Mater Interfaces 2023. [PMID: 37379238 DOI: 10.1021/acsami.3c03361] [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: 06/30/2023]
Abstract
Renewable energy sources require efficient energy storage systems. Lithium-ion batteries stand out among those systems, but safety and cycling stability problems still need to be improved. This can be achieved by the implementation of solid polymer electrolytes (SPE) instead of the typically used separator/electrolyte system. Thus, ternary SPEs have been developed based on poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) and poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene), P(VDF-TrFE-CFE) as host polymers, clinoptilolite (CPT) zeolite added to stabilize the battery cycling performance, and ionic liquids (ILs) (1-butyl-3-methylimidazolium thiocyanate ([BMIM][SCN])), 1-methyl-1-propylpyrrolidinium bis(trifluoromethylsulfonyl)imide ([PMPyr][TFSI]) or lithium bis(trifluoromethanesulfonyl)imide (LiTFSI), incorporated to increase the ionic conductivity. The samples were processed by doctor blade with solvent evaporation at 160 °C. The nature of the polymer matrix and fillers affect the morphology and mechanical properties of the samples and play an important role in electrochemical parameters such as ionic conductivity value, electrochemical window stability, and lithium-transference number. The best ionic conductivity (4.2 × 10-5 S cm-1) and lithium transference number (0.59) were obtained for the PVDF-HFP-CPT-[PMPyr][TFSI] sample. Charge-discharge battery tests at C/10 showed excellent battery performance with values of 150 mAh g-1 after 50 cycles, regardless of the polymer matrix and IL used. In the rate performance tests, the best SPE was the one based on the P(VDF-TrFE-CFE) host polymer, with a discharge value at C-rate of 98.7 mAh g-1, as it promoted ionic dissociation. This study proves for the first time the suitability of P(VDF-TrFE-CFE) as SPE in lithium-ion batteries, showing the relevance of the proper selection of the polymer matrix, IL type, and lithium salt in the formulation of the ternary SPE, in order to optimize solid-state battery performance. In particular, the enhancement of the ionic conductivity provided by the IL and the effect of the high dielectric constant polymer P(VDF-TrFE-CFE) in improving battery cyclability in a wide range of discharge rates must be highlighted.
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Affiliation(s)
- João C Barbosa
- Physics Centre of Minho and Porto Universities (CF-UM-UP) and Laboratory of Physics for Materials and Emergent Technologies, LapMET, University of Minho 4710-057 Braga, Portugal
- CQ-VR, University of Trás-os-Montes e Alto Douro, 5000-801 Vila Real, Portugal
| | | | - Arkaitz Fidalgo-Marijuan
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain
- Department of Organic and Inorganic Chemistry, University of the Basque Country UPV/EHU, 48940 Leioa, Spain
| | - Renato Gonçalves
- Centre of Chemistry, University of Minho, 4710-057 Braga, Portugal
| | - Stanislav Ferdov
- Physics Centre of Minho and Porto Universities (CF-UM-UP) and Laboratory of Physics for Materials and Emergent Technologies, LapMET, University of Minho 4710-057 Braga, Portugal
| | - Verónica de Zea Bermudez
- CQ-VR, University of Trás-os-Montes e Alto Douro, 5000-801 Vila Real, Portugal
- Department of Chemistry, University of Trás-os-Montes e Alto Douro, 5000-801 Vila Real, Portugal
| | - Senentxu Lanceros-Mendez
- Physics Centre of Minho and Porto Universities (CF-UM-UP) and Laboratory of Physics for Materials and Emergent Technologies, LapMET, University of Minho 4710-057 Braga, Portugal
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain
- Ikerbasque, Basque Foundation for Science, 48009 Bilbao, Spain
| | - Carlos M Costa
- Physics Centre of Minho and Porto Universities (CF-UM-UP) and Laboratory of Physics for Materials and Emergent Technologies, LapMET, University of Minho 4710-057 Braga, Portugal
- Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, 4710-053 Braga, Portugal
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3
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Barbosa J, Correia DM, Fidalgo-Marijuan A, Gonçalves R, Ferdov S, de Zea Bermudez V, Costa CM, Lanceros-Mendez S. Influence of Solvent Evaporation Temperature on the Performance of Ternary Solid Polymer Electrolytes Based on Poly(vinylidene fluoride- co-hexafluoropropylene) Combining an Ionic Liquid and a Zeolite. ACS Appl Energy Mater 2023; 6:5239-5248. [PMID: 37234969 PMCID: PMC10206616 DOI: 10.1021/acsaem.3c00155] [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: 01/17/2023] [Accepted: 04/25/2023] [Indexed: 05/28/2023]
Abstract
Solid polymer electrolytes (SPEs) will allow improving safety and durability in next-generation solid-state lithium-ion batteries (LIBs). Within the SPE class, ternary composites are a suitable approach as they provide high room-temperature ionic conductivity and excellent cycling and electrochemical stability. In this work, ternary SPEs based on poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) as a polymer host, clinoptilolite (CPT) zeolite, and 1-butyl-3-methylimidazolium thiocyanate ([Bmim][SCN])) ionic liquid (IL) as fillers were produced by solvent evaporation at different temperatures (room temperature, 80, 120, and 160 °C). Solvent evaporation temperature affects the morphology, degree of crystallinity, and mechanical properties of the samples as well as the ionic conductivity and lithium transference number. The highest ionic conductivity (1.2 × 10-4 S·cm-1) and lithium transference number (0.66) have been obtained for the SPE prepared at room temperature and 160 °C, respectively. Charge-discharge battery tests show the highest value of discharge capacity of 149 and 136 mAh·g-1 at C/10 and C/2 rates, respectively, for the SPE prepared at 160 °C. We conclude that the fine control of the solvent evaporation temperature during the preparation of the SPE allows us to optimize solid-state battery performance.
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Affiliation(s)
- João
C. Barbosa
- Physics
Centre of Minho and Porto Universities (CF-UM-UP) and Laboratory of
Physics for Materials and Emergent Technologies, LapMET, University of Minho, 4710-057 Braga, Portugal
- CQ-VR, University
of Trás-os-Montes e Alto Douro, 5000-801 Vila Real, Portugal
| | | | - Arkaitz Fidalgo-Marijuan
- BCMaterials,
Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain
- Department
of Organic and Inorganic Chemistry, University
of the Basque Country UPV/EHU, 48940 Leioa, Spain
| | - Renato Gonçalves
- Center
of Chemistry, University of Minho, 4710-057 Braga, Portugal
| | - Stanislav Ferdov
- Physics
Centre of Minho and Porto Universities (CF-UM-UP) and Laboratory of
Physics for Materials and Emergent Technologies, LapMET, University of Minho, 4710-057 Braga, Portugal
| | - Verónica de Zea Bermudez
- CQ-VR, University
of Trás-os-Montes e Alto Douro, 5000-801 Vila Real, Portugal
- Department
of Chemistry, University of Trás-os-Montes
e Alto Douro, 5000-801 Vila Real, Portugal
| | - Carlos M. Costa
- Physics
Centre of Minho and Porto Universities (CF-UM-UP) and Laboratory of
Physics for Materials and Emergent Technologies, LapMET, University of Minho, 4710-057 Braga, Portugal
- Institute
of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, 4710-053 Braga, Portugal
| | - Senentxu Lanceros-Mendez
- Physics
Centre of Minho and Porto Universities (CF-UM-UP) and Laboratory of
Physics for Materials and Emergent Technologies, LapMET, University of Minho, 4710-057 Braga, Portugal
- BCMaterials,
Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain
- Ikerbasque,
Basque Foundation for Science, 48009 Bilbao, Spain
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4
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Ferdov S, Shivachev B, Titorenkova R, Petrova N, Tarassov M, Nikolova R. Indium silicate with an imandrite-type structure. RSC Adv 2022; 12:12531-12536. [PMID: 35480364 PMCID: PMC9040156 DOI: 10.1039/d2ra00864e] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Accepted: 04/14/2022] [Indexed: 12/02/2022] Open
Abstract
This work reports the synthesis and characterization of novel zeolite-like indium silicate MS-2 (Minho-Sofia, solid number 2). The structure of this material is analogous to that of the mineral imandrite (Na6Ca1.5FeSi6O18), with In instead of Fe in the octahedral position. MS-2 is the first structurally confirmed indium silicate prepared under mild hydrothermal conditions and the only synthetic indium silicate related to the lovozerite mineral group. MS-2 (Na6.23Ca1.62In0.68Si6O18) exhibits significant indium deficiency in the octahedral position thus having the highest Si/In (8.8) ratio among the known indium silicates. The framework consists of occupationally disordered InO6 octahedra interconnected by 6-membered rings of [Si6O18] tetrahedra. The three-dimensional (3D) tunnel system is occupied by Na+ and Ca2+ charge-balancing ions. The low framework density (16.2 FC/1000 Å3) and high thermal stability (up to 900 °C) are comparable to other molecular sieves. This work reports the synthesis and characterization of novel zeolite-like indium silicate MS-2 (Minho-Sofia, solid number 2).![]()
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Affiliation(s)
- Stanislav Ferdov
- Center of Physics of the Universities of Minho and Porto, University of Minho 4800-058 Guimarães Portugal
| | - Boris Shivachev
- Institute of Mineralogy and Crystallography, Bulgarian Academy of Sciences Sofia 1113 Bulgaria
| | - Rositsa Titorenkova
- Institute of Mineralogy and Crystallography, Bulgarian Academy of Sciences Sofia 1113 Bulgaria
| | - Nadia Petrova
- Institute of Mineralogy and Crystallography, Bulgarian Academy of Sciences Sofia 1113 Bulgaria
| | - Mihail Tarassov
- Institute of Mineralogy and Crystallography, Bulgarian Academy of Sciences Sofia 1113 Bulgaria
| | - Rositsa Nikolova
- Institute of Mineralogy and Crystallography, Bulgarian Academy of Sciences Sofia 1113 Bulgaria
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5
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Barbosa JC, Correia DM, Fernández EM, Fidalgo-Marijuan A, Barandika G, Gonçalves R, Ferdov S, de Zea Bermudez V, Costa CM, Lanceros-Mendez S. High-Performance Room Temperature Lithium-Ion Battery Solid Polymer Electrolytes Based on Poly(vinylidene fluoride- co-hexafluoropropylene) Combining Ionic Liquid and Zeolite. ACS Appl Mater Interfaces 2021. [PMID: 34636238 DOI: 10.1039/d1ma00244a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
The demand for more efficient energy storage devices has led to the exponential growth of lithium-ion batteries. To overcome the limitations of these systems in terms of safety and to reduce environmental impact, solid-state technology emerges as a suitable approach. This work reports on a three-component solid polymer electrolyte system based on poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP), the ionic liquid 1-butyl-3-methylimidazolium thiocyanate ([BMIM][SCN]), and clinoptilolite zeolite (CPT). The influences of the preparation method and of the dopants on the electrolyte stability, ionic conductivity, and battery performance were studied. The developed electrolytes show an improved room temperature ionic conductivity (1.9 × 10-4 S cm-1), thermal stability (up to 300 °C), and mechanical stability. The corresponding batteries exhibit an outstanding room temperature performance of 160.3 mAh g-1 at a C/15-rate, with a capacity retention of 76% after 50 cycles. These results represent a step forward in a promising technology aiming the widespread implementation of solid-state batteries.
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Affiliation(s)
- João C Barbosa
- Center of Physics, University of Minho, 4710-058 Braga, Portugal
- Department of Chemistry and CQ-VR, University of Trás-os-Montes e Alto Douro, 5000-801 Vila Real, Portugal
| | - Daniela M Correia
- Center of Physics, University of Minho, 4710-058 Braga, Portugal
- Department of Chemistry and CQ-VR, University of Trás-os-Montes e Alto Douro, 5000-801 Vila Real, Portugal
| | - Eva M Fernández
- Department of Organic and Inorganic Chemistry, Universidad del Pais Vasco (UPV/EHU), 48940 Leioa, Spain
| | - Arkaitz Fidalgo-Marijuan
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain
| | - Gotzone Barandika
- Department of Organic and Inorganic Chemistry, Universidad del Pais Vasco (UPV/EHU), 48940 Leioa, Spain
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain
| | - Renato Gonçalves
- Center of Chemistry, University of Minho, 4710-058 Braga, Portugal
| | - Stanislav Ferdov
- Center of Physics, University of Minho, 4710-058 Braga, Portugal
| | - Verónica de Zea Bermudez
- Department of Chemistry and CQ-VR, University of Trás-os-Montes e Alto Douro, 5000-801 Vila Real, Portugal
| | - Carlos M Costa
- Center of Physics, University of Minho, 4710-058 Braga, Portugal
- Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, 4710-053 Braga, Portugal
| | - Senentxu Lanceros-Mendez
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain
- Ikerbasque, Basque Foundation for Science, 48009 Bilbao, Spain
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6
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Barbosa JC, Correia DM, Fernández EM, Fidalgo-Marijuan A, Barandika G, Gonçalves R, Ferdov S, de Zea Bermudez V, Costa CM, Lanceros-Mendez S. High-Performance Room Temperature Lithium-Ion Battery Solid Polymer Electrolytes Based on Poly(vinylidene fluoride- co-hexafluoropropylene) Combining Ionic Liquid and Zeolite. ACS Appl Mater Interfaces 2021; 13:48889-48900. [PMID: 34636238 DOI: 10.1021/acsami.1c15209] [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: 06/13/2023]
Abstract
The demand for more efficient energy storage devices has led to the exponential growth of lithium-ion batteries. To overcome the limitations of these systems in terms of safety and to reduce environmental impact, solid-state technology emerges as a suitable approach. This work reports on a three-component solid polymer electrolyte system based on poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP), the ionic liquid 1-butyl-3-methylimidazolium thiocyanate ([BMIM][SCN]), and clinoptilolite zeolite (CPT). The influences of the preparation method and of the dopants on the electrolyte stability, ionic conductivity, and battery performance were studied. The developed electrolytes show an improved room temperature ionic conductivity (1.9 × 10-4 S cm-1), thermal stability (up to 300 °C), and mechanical stability. The corresponding batteries exhibit an outstanding room temperature performance of 160.3 mAh g-1 at a C/15-rate, with a capacity retention of 76% after 50 cycles. These results represent a step forward in a promising technology aiming the widespread implementation of solid-state batteries.
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Affiliation(s)
- João C Barbosa
- Center of Physics, University of Minho, 4710-058 Braga, Portugal
- Department of Chemistry and CQ-VR, University of Trás-os-Montes e Alto Douro, 5000-801 Vila Real, Portugal
| | - Daniela M Correia
- Center of Physics, University of Minho, 4710-058 Braga, Portugal
- Department of Chemistry and CQ-VR, University of Trás-os-Montes e Alto Douro, 5000-801 Vila Real, Portugal
| | - Eva M Fernández
- Department of Organic and Inorganic Chemistry, Universidad del Pais Vasco (UPV/EHU), 48940 Leioa, Spain
| | - Arkaitz Fidalgo-Marijuan
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain
| | - Gotzone Barandika
- Department of Organic and Inorganic Chemistry, Universidad del Pais Vasco (UPV/EHU), 48940 Leioa, Spain
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain
| | - Renato Gonçalves
- Center of Chemistry, University of Minho, 4710-058 Braga, Portugal
| | - Stanislav Ferdov
- Center of Physics, University of Minho, 4710-058 Braga, Portugal
| | - Verónica de Zea Bermudez
- Department of Chemistry and CQ-VR, University of Trás-os-Montes e Alto Douro, 5000-801 Vila Real, Portugal
| | - Carlos M Costa
- Center of Physics, University of Minho, 4710-058 Braga, Portugal
- Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, 4710-053 Braga, Portugal
| | - Senentxu Lanceros-Mendez
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain
- Ikerbasque, Basque Foundation for Science, 48009 Bilbao, Spain
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7
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Ferdov S, Lopes AML, Araujo JP, Shivachev B, Titorenkova R, Petrova N, Nikolova R. Three-Dimensional (3D) Microporous Iron Silicate with an Imandrite Type of Structure. Inorg Chem 2021; 60:4563-4568. [PMID: 33709692 DOI: 10.1021/acs.inorgchem.0c03487] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Small-pore iron silicate MS-1 (Minho-Sofia, solid number 1) with a 3D porous system, an analogue of the rare mineral imandrite, has been synthesized and characterized. This material is the lowest framework density iron silicate, one of the most siliceous (Si/Fe = 6) iron silicates, the first iron cyclosilicate achieved at hydrothermal conditions, and the only synthetic iron-based member of the lovozerite mineral group.
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Affiliation(s)
- Stanislav Ferdov
- Center of Physics of the Universities of Minho and Porto, University of Minho, 4800-058 Guimarães, Portugal
| | - Armandina M L Lopes
- IFIMUP-Instituto de Física de Materiais Avançados, Nanotecnologia e Fotónica, Departamento de Física e Astronomia da Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal
| | - João P Araujo
- IFIMUP-Instituto de Física de Materiais Avançados, Nanotecnologia e Fotónica, Departamento de Física e Astronomia da Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal
| | - Boris Shivachev
- Institute of Mineralogy and Crystallography, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria
| | - Rositsa Titorenkova
- Institute of Mineralogy and Crystallography, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria
| | - Nadia Petrova
- Institute of Mineralogy and Crystallography, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria
| | - Rosica Nikolova
- Institute of Mineralogy and Crystallography, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria
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8
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Martins PM, Salazar H, Aoudjit L, Gonçalves R, Zioui D, Fidalgo-Marijuan A, Costa CM, Ferdov S, Lanceros-Mendez S. Crystal morphology control of synthetic giniite for enhanced photo-Fenton activity against the emerging pollutant metronidazole. Chemosphere 2021; 262:128300. [PMID: 33182084 DOI: 10.1016/j.chemosphere.2020.128300] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 09/07/2020] [Accepted: 09/08/2020] [Indexed: 06/11/2023]
Abstract
Metronidazole (MNZ) is a recalcitrant antibiotic with toxic and carcinogenic effects in aquatic environments. In this work, Fe5(PO4)4(OH)3·2H2O (giniite) particles were synthesised with three different alkaline cations (Li+, Na+ and K+) and used as Fenton catalysts for MNZ removal. It is shown that the addition of different cations during the hydrothermal synthesis process promote different morphologies from asterisk-like to flower-like and branches-like, maintaining the crystalline structure of pure giniite. The photo-Fenton activity of these particles was then evaluated through the degradation of MNZ under sunlight radiation for 9 h. The results indicate that the alkaline cation has a predominant role in the photo-Fenton efficiency, as demonstrated by the superior degradation efficiencies of Na@giniite particles (91.2% and 72.5% with giniite concentration of 0.2 g L-1 and 0.07 g L-1, respectively), related with its high surface area (10.7 m2 g-1). Thus, it is demonstrated the suitability of Na@giniite particles as Fenton catalyst for MNZ removal from water.
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Affiliation(s)
- P M Martins
- Centre/Department of Physics, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal; Centre/Department of Chemistry, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal; IB-S - Institute for Research and Innovation on Bio-Sustainability, University of Minho, 4710-057, Braga, Portugal.
| | - H Salazar
- Centre/Department of Physics, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal; Centre/Department of Chemistry, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal; IB-S - Institute for Research and Innovation on Bio-Sustainability, University of Minho, 4710-057, Braga, Portugal
| | - L Aoudjit
- Unité de Développement des équipements Solaires, UDES /Centre de Développement des Energies Renouvelables, CDER, Bou Ismail, 42415, W. Tipaza, Algeria
| | - R Gonçalves
- Centre/Department of Chemistry, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal
| | - D Zioui
- Unité de Développement des équipements Solaires, UDES /Centre de Développement des Energies Renouvelables, CDER, Bou Ismail, 42415, W. Tipaza, Algeria
| | - A Fidalgo-Marijuan
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940, Leioa, Spain
| | - C M Costa
- Centre/Department of Physics, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal; Centre/Department of Chemistry, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal
| | - S Ferdov
- Centre/Department of Physics, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal
| | - S Lanceros-Mendez
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940, Leioa, Spain; IKERBASQUE, Basque Foundation for Science, 48013, Bilbao, Spain.
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9
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Ferdov S, Lin Z. The first hafnium germanate with garnet-type of structure: Mild hydrothermal synthesis, crystal structure and new mechanism of hydroxyl inclusion. J SOLID STATE CHEM 2019. [DOI: 10.1016/j.jssc.2019.02.031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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10
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Ferdov S. Euhedral crystals of Na 2TiGeO 5with switchable translucency and reorientable microstructure. CrystEngComm 2019. [DOI: 10.1039/c9ce00780f] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Crystal twinning in euhedral crystals reveals anomalous optical properties.
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Affiliation(s)
- Stanislav Ferdov
- Department of Physics
- University of Minho
- 4800-058 Guimarães
- Portugal
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11
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Carvalho I, Ferdov S, Mansilla C, Marques S, Cerqueira M, Pastrana L, Henriques M, Gaidau C, Ferreira P, Carvalho S. Development of antimicrobial leather modified with Ag–TiO2 nanoparticles for footwear industry. ACTA ACUST UNITED AC 2018. [DOI: 10.1016/j.stmat.2018.09.002] [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] [Indexed: 11/29/2022]
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12
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Landi S, Carneiro J, Ferdov S, Fonseca AM, Neves IC, Ferreira M, Parpot P, Soares OS, Pereira MF. Photocatalytic degradation of Rhodamine B dye by cotton textile coated with SiO 2 -TiO 2 and SiO 2 -TiO 2 -HY composites. J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2017.05.047] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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13
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Ram P, Gören A, Ferdov S, Silva MM, Singhal R, Costa CM, Sharma RK, Lanceros-Méndez S. Improved performance of rare earth doped LiMn2O4cathodes for lithium-ion battery applications. NEW J CHEM 2016. [DOI: 10.1039/c6nj00198j] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
LiMn2O4has been doped with different rare earth elements in order to improve battery cycling performance and reduce capacity fading.
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Affiliation(s)
- Pura Ram
- Department of Chemistry
- Indian Institute of Technology Jodhpur
- Rajasthan
- India
| | - Attila Gören
- Departamento/Centro de Física
- Universidade do Minho
- 4710-057 Braga
- Portugal
- Departamento/Centro de Química
| | - Stanislav Ferdov
- Departamento/Centro de Física
- Universidade do Minho
- 4710-057 Braga
- Portugal
| | - Maria M. Silva
- Departamento/Centro de Química
- Universidade do Minho
- 4710-057 Braga
- Portugal
| | - Rahul Singhal
- Department of Physics and Engineering Physics
- Central Connecticut State University
- New Britain
- USA
| | - Carlos M. Costa
- Departamento/Centro de Física
- Universidade do Minho
- 4710-057 Braga
- Portugal
- Departamento/Centro de Química
| | - Rakesh K. Sharma
- Department of Chemistry
- Indian Institute of Technology Jodhpur
- Rajasthan
- India
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14
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Abstract
Layered titanosilicates (JDF-L1 and AM-4) revealed size- and pattern-dependent overgrowth of an MFI-type of zeolite.
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Affiliation(s)
- Stanislav Ferdov
- Department of Physics
- University of Minho
- 4800-058 Guimarães, Portugal
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15
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Lopes AML, Araújo JP, Ferdov S. Room temperature synthesis of Bi25FeO39 and hydrothermal kinetic relations between sillenite- and distorted perovskite-type bismuth ferrites. Dalton Trans 2014; 43:18010-6. [DOI: 10.1039/c4dt01825g] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Sillentite-type Bi25FeO39 is synthesized at room temperature and its kinetic relations with rombohedrally distorted perovskite-type BiFeO3 are revealed.
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Affiliation(s)
- Armandina M. L. Lopes
- IFIMUP and IN-Institute of Nanoscience and Nanotechnology
- Department of Physics and Astronomy
- Faculty of Sciences
- University of Porto
- 4169-007 Porto, Portugal
| | - João P. Araújo
- IFIMUP and IN-Institute of Nanoscience and Nanotechnology
- Department of Physics and Astronomy
- Faculty of Sciences
- University of Porto
- 4169-007 Porto, Portugal
| | - Stanislav Ferdov
- Department of Physics
- University of Minho
- 4800-058 Guimarães, Portugal
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16
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Ferdov S. Low-Density Macroporous Foams Obtained from a Molecular Sieve by Temperature-Induced Amorphization. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201305335] [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: 11/09/2022]
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17
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Ferdov S. Low-Density Macroporous Foams Obtained from a Molecular Sieve by Temperature-Induced Amorphization. Angew Chem Int Ed Engl 2013; 52:12135-8. [DOI: 10.1002/anie.201305335] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2013] [Revised: 09/03/2013] [Indexed: 11/10/2022]
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18
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Zhang X, Xu H, Zuo Z, Lin Z, Ferdov S, Dong J. Hydrothermal synthesis of copper zirconium phosphate hydrate [Cu(OH)2Zr(HPO4)2·2H2O] and an investigation of its lubrication properties in grease. ACS Appl Mater Interfaces 2013; 5:7989-7994. [PMID: 23895405 DOI: 10.1021/am402073b] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Copper zirconium phosphate hydrate (Cu(OH)2Zr(HPO4)2·2H2O, hereafter referred to as Cu-α-ZrP) with high crystallinity was directly synthesized in a NaF-CuO-ZrO-P2O5-H2O system under hydrothermal conditions. The copper ion was confirmed to be an exchangeable cation in the Cu-α-ZrP through elemental analysis and a proton ion exchange process. The crystal structure of the Cu-α-ZrP was determined ab initio by using X-ray powder diffraction data. In the structure, the CuO6 octahedron would be located in an exchangeable atom position. Moreover, Cu-α-ZrP was evaluated as an additive in grease in a four ball test. The maximum nonseizure load (PB, representing the load-carrying capacity) of the base grease containing Cu-α-ZrP was increased from 353 to 1235 N. The excellent load-carrying capacity may be explained by the easier adherence of the material to the worn surface forming a tight protective film.
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Affiliation(s)
- Xiaosheng Zhang
- Research Institute of Special Chemicals, Taiyuan University of Technology, Taiyuan 030024, Shanxi, PR China
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19
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Ferdov S, Shikova E, Ivanova Z, Dimowa LT, Nikolova RP, Lin Z, Shivachev BL. A microporous titanosilicate for selective killing of HeLa cancer cells. RSC Adv 2013. [DOI: 10.1039/c3ra23381b] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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20
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Ferdov S, Ferreira RA, Lin Z, Wu Z. Mild hydrothermal synthesis, crystal structure, photoluminescence properties and emission quantum yield of a new zirconium germanate with garnet-type structure. J SOLID STATE CHEM 2012. [DOI: 10.1016/j.jssc.2012.01.064] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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21
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Abstract
For the first time, reduced pressure to induce a framework contraction of the microporous titanosilicate ETS-4 is used. A vacuum of 10(-2) Torr decreases the temperature of structural contraction from 200 degrees C to near room temperature and presents a potential alternative to the temperature-induced and anion-controlled molecular gate effect. The dimensions and the reversibility of the temperature- and vacuum-induced framework contractions are evaluated by in situ X-ray diffraction experiments. On the basis of these studies, it is revealed that Na-ETS-4 possesses a more rigid framework than Sr-ETS-4, which discloses a way to control the framework flexibility of ETS-4.
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Affiliation(s)
- Stanislav Ferdov
- Department of Physics, University of Minho, 4800-058 Guimaraes, Portugal.
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22
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Abstract
For the first time heteroepitaxial growth of MFI zeolite over ETS-4 and ETS-10 is described, and a structural model of the interface between the molecular sieves is proposed.
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Affiliation(s)
- Stanislav Ferdov
- Department of Physics, University of Minho, 4800-058 Guimarães, Portugal.
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23
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Liu L, Ferdov S, Coelho C, Kong Y, Mafra L, Li JP, Dong JX, Kolitsch U, Sá Ferreira RA, Tillmanns E, Rocha J, Lin Z. New Crystalline Layered Zinc Phosphate with 10-Membered-Ring Channels Perpendicular to Layers. Inorg Chem 2009; 48:4598-600. [DOI: 10.1021/ic900107p] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Lei Liu
- Research Institute of Special Chemicals, Taiyuan University of Technology, 030024 Taiyuan, People's Republic of China
| | - Stanislav Ferdov
- Department of Chemistry, CICECO, University of Aveiro, Aveiro 3810-193, Portugal
- Department of Physics, University of Minho, Campus de Azurém, 4800-058 Guimarães, Portugal
| | - Cristina Coelho
- Department of Chemistry, CICECO, University of Aveiro, Aveiro 3810-193, Portugal
| | - Ying Kong
- Research Institute of Special Chemicals, Taiyuan University of Technology, 030024 Taiyuan, People's Republic of China
| | - Luís Mafra
- Department of Chemistry, CICECO, University of Aveiro, Aveiro 3810-193, Portugal
| | - Jin P. Li
- Research Institute of Special Chemicals, Taiyuan University of Technology, 030024 Taiyuan, People's Republic of China
| | - Jin X. Dong
- Research Institute of Special Chemicals, Taiyuan University of Technology, 030024 Taiyuan, People's Republic of China
| | - Uwe Kolitsch
- Mineralogisch-Petrographische Abteilung, Naturhistorisches Museum, Burgring 7, A-1010 Wien, Austria
| | - Rute A. Sá Ferreira
- Department of Physics, CICECO, University of Aveiro, Aveiro 3810-193, Portugal
| | - Ekkehart Tillmanns
- Institut für Mineralogie and Kristallographie, Universität Wien, Geozentrum, Althanstrasse 14, A-1090 Wien, Austria
| | - João Rocha
- Department of Chemistry, CICECO, University of Aveiro, Aveiro 3810-193, Portugal
| | - Zhi Lin
- Department of Chemistry, CICECO, University of Aveiro, Aveiro 3810-193, Portugal
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24
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Ferdov S, Reis MS, Lin Z, Ferreira RAS. Hydrothermal Synthesis, Crystal Structure, and Magnetic Properties of a New Inorganic Vanadium(III) Phosphate with a Chain Structure. Inorg Chem 2008; 47:10062-6. [DOI: 10.1021/ic801318c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Stanislav Ferdov
- Departments of Chemistry and Physics, CICECO, University of Aveiro, 3810-193 Aveiro, Portugal, and Department of Physics, University of Minho, Guimarães, Portugal
| | - Mario S. Reis
- Departments of Chemistry and Physics, CICECO, University of Aveiro, 3810-193 Aveiro, Portugal, and Department of Physics, University of Minho, Guimarães, Portugal
| | - Zhi Lin
- Departments of Chemistry and Physics, CICECO, University of Aveiro, 3810-193 Aveiro, Portugal, and Department of Physics, University of Minho, Guimarães, Portugal
| | - Rute A. Sá Ferreira
- Departments of Chemistry and Physics, CICECO, University of Aveiro, 3810-193 Aveiro, Portugal, and Department of Physics, University of Minho, Guimarães, Portugal
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25
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26
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Ferdov S, Mihailova B, Kostov-Kytin V, Kalvachev Y, Petrov O. Hydrothermal synthesis and characterization of a novel zirconosilicate. Acta Crystallogr A 2004. [DOI: 10.1107/s0108767304095972] [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: 11/10/2022] Open
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27
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Abstract
A rapid procedure for synthesis of highly crystalline and pure samples of JDF-L1 without using organics are reactants or templates is described and indexation of the powder X-ray diffraction pattern of this phase is presented.
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Affiliation(s)
- Stanislav Ferdov
- Marie Curie Fellowship of the European Community, Institute of Mineralogy and Crystallography, University of Vienna, Vienna, Austria
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