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Parchovianská I, Parchovianský M, Pecušová B, Hanzel O, Pakseresht A. Synthesis and Characterization of Fluorite-Type La2Ce2O7 Plasma Sprayable Powder for TBCs Application. MATERIALS 2022; 15:ma15114007. [PMID: 35683305 PMCID: PMC9182331 DOI: 10.3390/ma15114007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 05/30/2022] [Accepted: 06/02/2022] [Indexed: 12/10/2022]
Abstract
This work focuses on the fabrication of lanthanum cerate (La2Ce2O7, LC) powders via two chemical routes: modified Pechini sol-gel method and solid-state synthesis. The synthesized LC powders were heat treated in the temperature range of 1000–1400 °C for 6 h and investigated as a material for thermal barrier coating (TBC) applications. For this purpose, the powder morphology, chemical composition, crystal structure and thermal stability were studied. Scanning electron microscopy (SEM) of the synthesized powders revealed an agglomerated structure consisting of fine and uniformly distributed grains. Energy-dispersive X-ray spectroscopy (EDXS) indicated that the chemical compositions of the LC powders were similar to the stoichiometric ratio of La2Ce2O7. A cubic fluorite structure was observed by X-ray diffraction analysis (XRD) after calcining the LC powder prepared by solid-state synthesis at 1300 °C. In contrast, there was always a fluorite structure in the LC powder synthesized by the Pechini sol-gel method after heat treatment over the entire temperature range. The thermal behavior of the LC powders was analyzed by differential scanning calorimetry (DSC) and thermogravimetric analysis (TG) in the temperature range of 25–1300 °C. Neither an obvious mass change nor a visible energy change was observed within the tested temperature range, indicating high phase stability of the LC powder and its suitability for TBC applications. Spheroidization on the prepared LC powders was also investigated, revealing that powder size and morphology had a significant impact on the spheroidization efficiency.
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Affiliation(s)
- Ivana Parchovianská
- Centre for Functional and Surface Functionalised Glass, Alexander Dubček University of Trenčín, Študentská 2, 911 50 Trenčín, Slovakia; (M.P.); (B.P.); (A.P.)
- Correspondence:
| | - Milan Parchovianský
- Centre for Functional and Surface Functionalised Glass, Alexander Dubček University of Trenčín, Študentská 2, 911 50 Trenčín, Slovakia; (M.P.); (B.P.); (A.P.)
| | - Beáta Pecušová
- Centre for Functional and Surface Functionalised Glass, Alexander Dubček University of Trenčín, Študentská 2, 911 50 Trenčín, Slovakia; (M.P.); (B.P.); (A.P.)
| | - Ondrej Hanzel
- Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dúbravská Cesta 9, 845 36 Bratislava, Slovakia;
| | - Amirhossein Pakseresht
- Centre for Functional and Surface Functionalised Glass, Alexander Dubček University of Trenčín, Študentská 2, 911 50 Trenčín, Slovakia; (M.P.); (B.P.); (A.P.)
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Lazić V, Živković LS, Sredojević D, Fernandes MM, Lanceros-Mendez S, Ahrenkiel SP, Nedeljković JM. Tuning Properties of Cerium Dioxide Nanoparticles by Surface Modification with Catecholate-type of Ligands. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:9738-9746. [PMID: 32787065 DOI: 10.1021/acs.langmuir.0c01163] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Cerium dioxide (CeO2) finds applications in areas such as corrosion protection, solar cells, or catalysis, finding increasing applications in biomedicine. This work reports on surface-modified CeO2 particles in order to tune their applicability in the biomedical field. Stable aqueous CeO2 sol, consisting of 3-4 nm in size crystallites, was synthesized using forced hydrolysis. The coordination of catecholate-type of ligands (catechol, caffeic acid, tiron, and dopamine) to the surface-Ce atoms is followed with the appearance of absorption in the visible spectral range as a consequence of interfacial charge-transfer complex formation. The spectroscopic observations are complemented with the density functional theory calculations using a cluster model. The synthesized samples were characterized by X-ray diffraction analysis, transmission electron microscopy, and nitrogen adsorption-desorption isotherms. The ζ-potential measurements indicated that the stability of CeO2 sol is preserved upon surface modification. The pristine CeO2 nanoparticles (NPs) are nontoxic against pre-osteoblast cells in the entire studied concentration range (up to 1.5 mM). Hybrid CeO2 NPs, capped with dopamine or caffeic acid, display toxic behavior for concentrations ≥0.17 and 1.5 mM, respectively. On the other hand, surface-modified CeO2 NPs with catechol and tiron promote the proliferation of pre-osteoblast cells.
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Affiliation(s)
- Vesna Lazić
- Vinča Institute of Nuclear Sciences, University of Belgrade, P.O. Box 522, 11001 Belgrade, Serbia
| | - Ljiljana S Živković
- Vinča Institute of Nuclear Sciences, University of Belgrade, P.O. Box 522, 11001 Belgrade, Serbia
| | - Dušan Sredojević
- Vinča Institute of Nuclear Sciences, University of Belgrade, P.O. Box 522, 11001 Belgrade, Serbia
| | - Margarida M Fernandes
- Centre of Physics, University of Minho, 4710-057 Braga, Portugal
- Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 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, 48013 Bilbao, Spain
| | - S Phillip Ahrenkiel
- South Dakota School of Mines and Technology, 501 E. Saint Joseph Street, Rapid City, South Dakota 57701, United States
| | - Jovan M Nedeljković
- Vinča Institute of Nuclear Sciences, University of Belgrade, P.O. Box 522, 11001 Belgrade, Serbia
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Peskova M, Heger Z, Dostalova S, Fojtu M, Castkova K, Ilkovics L, Vykoukal V, Pekarik V. Investigation of Detergent-Modified Enzymomimetic Activities of TEMED-Templated Nanoceria Towards Fluorescent Detection of Their Cellular Uptake. ChemistrySelect 2018. [DOI: 10.1002/slct.201802496] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Marie Peskova
- Central European Institute of Technology (CEITEC); Masaryk University; 625 00 Brno Czech Republic
| | - Zbynek Heger
- Department of Chemistry and Biochemistry; Mendel University; 613 00 Brno Czech Republic
- Central European Institute of Technology (CEITEC); University of Technology; 616 00 Brno Czech Republic
| | - Simona Dostalova
- Department of Chemistry and Biochemistry; Mendel University; 613 00 Brno Czech Republic
- Central European Institute of Technology (CEITEC); University of Technology; 616 00 Brno Czech Republic
| | - Michaela Fojtu
- Institute of Physiology, Faculty of Medicine; Masaryk University; 625 00 Brno Czech Republic
| | - Klara Castkova
- Central European Institute of Technology (CEITEC); University of Technology; 616 00 Brno Czech Republic
| | - Ladislav Ilkovics
- Institute of Histology and Embryology, Faculty of Medicine; Masaryk University; 625 00 Brno Czech Republic
| | - Vit Vykoukal
- Central European Institute of Technology (CEITEC); Masaryk University; 625 00 Brno Czech Republic
| | - Vladimir Pekarik
- Institute of Physiology, Faculty of Medicine; Masaryk University; 625 00 Brno Czech Republic
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Santra C, Pramanik M, Bando KK, Maity S, Chowdhury B. Gold nanoparticles on mesoporous Cerium-Tin mixed oxide for aerobic oxidation of benzyl alcohol. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.molcata.2016.03.026] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Santra C, Auroux A, Chowdhury B. Bi doped CeO2 oxide supported gold nanoparticle catalysts for the aerobic oxidation of alcohols. RSC Adv 2016. [DOI: 10.1039/c6ra05216a] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Gold nanoparticles supported on Bi–CeO2 with four different bismuth loadings (2 to 8 mol%) were prepared to determine the role of oxide vacancies in doped ceria in the benzyl alcohol oxidation reaction.
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Affiliation(s)
- Chiranjit Santra
- Department of Applied Chemistry
- Indian School of Mines
- Dhanbad
- India
| | - Aline Auroux
- Institut de Recherchessur la Catalyse et l'Environnement de Lyon
- Université Lyon1
- France
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Cai G, Xu S, Wang Z, Wilkie CA. Further studies on polystyrene/cerium (IV) oxide system: melt blending and interaction with montmorillonite. POLYM ADVAN TECHNOL 2013. [DOI: 10.1002/pat.3226] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Guipeng Cai
- Department of Chemistry and Fire Retardant Research Facility; Marquette University; PO Box 1881 Milwaukee WI 53201 USA
| | - Shaorong Xu
- School of Materials Science and Engineering; Tongji University; Shanghai 201804 China
| | - Zhengzhou Wang
- School of Materials Science and Engineering; Tongji University; Shanghai 201804 China
| | - Charles A. Wilkie
- Department of Chemistry and Fire Retardant Research Facility; Marquette University; PO Box 1881 Milwaukee WI 53201 USA
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Mandal S, Santra C, Bando KK, James OO, Maity S, Mehta D, Chowdhury B. Aerobic oxidation of benzyl alcohol over mesoporous Mn-doped ceria supported Au nanoparticle catalyst. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.molcata.2013.05.011] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Santra C, Rahman S, Bojja S, James OO, Sen D, Maity S, Mohanty AK, Mazumder S, Chowdhury B. Barium, calcium and magnesium doped mesoporous ceria supported gold nanoparticle for benzyl alcoholoxidation using molecular O2. Catal Sci Technol 2013. [DOI: 10.1039/c2cy20523h] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Palanisamy B, Paul B. Continuous flow synthesis of ceria nanoparticles using static T-mixers. Chem Eng Sci 2012. [DOI: 10.1016/j.ces.2012.04.032] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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LIU K, ZHONG M. Synthesis of monodispersed nanosized CeO2 by hydrolysis of the cerium complex precursor. J RARE EARTH 2010. [DOI: 10.1016/s1002-0721(09)60178-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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