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Synthesis and thermal stability of ZrO2SiO2 core-shell submicron particles
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Veröffentlicht in: | RSC Advances 9(2019), 46, Seite 26902-26914 |
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Personen und Körperschaften: | , , , , , , , , , , , |
Titel: | Synthesis and thermal stability of ZrO2SiO2 core-shell submicron particles/ Maik Finsel, Maria Hemme, Sebastian Döring, Jil S. V. Rüter, Gregor T. Dahl, Tobias Krekeler, Andreas Kornowski, Martin Ritter, Horst Weller and Tobias Vossmeyer |
Format: | E-Book-Kapitel |
Sprache: | Englisch |
veröffentlicht: |
2019
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Gesamtaufnahme: |
Royal Society of Chemistry: RSC Advances, 9(2019), 46, Seite 26902-26914
, volume:9 |
Quelle: | Verbunddaten SWB Lizenzfreie Online-Ressourcen |
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author | Finsel, Maik, Hemme, Maria, Döring, Sebastian, Rüter, Jil S. V., Dahl, Gregor Thomas, Ritter, Martin, Kornowski, Andreas, Ritter, Martin, Weller, Horst, Vossmeyer, Tobias |
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contents | ZrO2@SiO2 core-shell submicron particles are promising candidates for the development of advanced optical materials. Here, submicron zirconia particles were synthesized using a modified sol-gel method and pre-calcined at 400 °C. Silica shells were grown on these particles (average size: ∼270 nm) with well-defined thicknesses (26 to 61 nm) using a seeded-growth Stöber approach. To study the thermal stability of bare ZrO2 cores and ZrO2@SiO2 core-shell particles they were calcined at 450 to 1200 °C. After heat treatments, the particles were characterized by SEM, TEM, STEM, cross-sectional EDX mapping, and XRD. The non-encapsulated, bare ZrO2 particles predominantly transitioned to the tetragonal phase after pre-calcination at 400 °C. Increasing the temperature to 600 °C transformed them to monoclinic. Finally, grain coarsening destroyed the spheroidal particle shape after heating to 800 °C. In striking contrast, SiO2-encapsulation significantly inhibited grain growth and the t → m transition progressed considerably only after heating to 1000 °C, whereupon the particle shape, with a smooth silica shell, remained stable. Particle disintegration was observed after heating to 1200 °C. Thus, ZrO2@SiO2 core-shell particles are suited for high-temperature applications up to ∼1000 °C. Different mechanisms are considered to explain the markedly enhanced stability of ZrO2@SiO2 core-shell particles. |
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spelling | Finsel, Maik VerfasserIn (DE-588)1145220673 (DE-627)1005525269 (DE-576)495681350 aut, Synthesis and thermal stability of ZrO2SiO2 core-shell submicron particles Maik Finsel, Maria Hemme, Sebastian Döring, Jil S. V. Rüter, Gregor T. Dahl, Tobias Krekeler, Andreas Kornowski, Martin Ritter, Horst Weller and Tobias Vossmeyer, 2019, Illustrationen, Diagramme, Text txt rdacontent, Computermedien c rdamedia, Online-Ressource cr rdacarrier, Sonstige Körperschaft: Technische Universität Hamburg, Sonstige Körperschaft: Technische Universität Hamburg, Betriebseinheit Elektronenmikroskopie BEEM, Sonstige Körperschaft: Technische Universität Hamburg, SFB 986 Maßgeschneiderte Multiskalige Materialsysteme M3, ZrO2@SiO2 core-shell submicron particles are promising candidates for the development of advanced optical materials. Here, submicron zirconia particles were synthesized using a modified sol-gel method and pre-calcined at 400 °C. Silica shells were grown on these particles (average size: ∼270 nm) with well-defined thicknesses (26 to 61 nm) using a seeded-growth Stöber approach. To study the thermal stability of bare ZrO2 cores and ZrO2@SiO2 core-shell particles they were calcined at 450 to 1200 °C. After heat treatments, the particles were characterized by SEM, TEM, STEM, cross-sectional EDX mapping, and XRD. The non-encapsulated, bare ZrO2 particles predominantly transitioned to the tetragonal phase after pre-calcination at 400 °C. Increasing the temperature to 600 °C transformed them to monoclinic. Finally, grain coarsening destroyed the spheroidal particle shape after heating to 800 °C. In striking contrast, SiO2-encapsulation significantly inhibited grain growth and the t → m transition progressed considerably only after heating to 1000 °C, whereupon the particle shape, with a smooth silica shell, remained stable. Particle disintegration was observed after heating to 1200 °C. Thus, ZrO2@SiO2 core-shell particles are suited for high-temperature applications up to ∼1000 °C. Different mechanisms are considered to explain the markedly enhanced stability of ZrO2@SiO2 core-shell particles., Hemme, Maria VerfasserIn aut, Döring, Sebastian 1986- VerfasserIn (DE-588)1072778327 (DE-627)828226547 (DE-576)434235792 aut, Rüter, Jil S. V. VerfasserIn aut, Dahl, Gregor Thomas VerfasserIn aut, Ritter, Martin 1970- VerfasserIn (DE-588)132680440 (DE-627)525179410 (DE-576)263054462 aut, Kornowski, Andreas VerfasserIn aut, Weller, Horst 1954- VerfasserIn (DE-588)1024635481 (DE-627)720241855 (DE-576)369295641 aut, Vossmeyer, Tobias VerfasserIn (DE-588)102463857X (DE-627)720248183 (DE-576)36930120X aut, Technische Universität Hamburg (DE-588)1112763473 (DE-627)866918418 (DE-576)476770564 oth, Technische Universität Hamburg Betriebseinheit Elektronenmikroskopie BEEM (DE-588)1156636221 (DE-627)1019442085 (DE-576)502338679 oth, SFB 986 Maßgeschneiderte Multiskalige Materialsysteme M3 (DE-588)115661807X (DE-627)1019408316 (DE-576)502290641 oth, Enthalten in Royal Society of Chemistry RSC Advances London : RSC Publishing, 2011 9(2019), 46, Seite 26902-26914 Online-Ressource (DE-627)666217866 (DE-600)2623224-8 (DE-576)349040303 2046-2069 nnns, volume:9 year:2019 number:46 pages:26902-26914, http://nbn-resolving.de/urn:nbn:de:gbv:830-882.051340 Resolving-System kostenfrei, https://doi.org/10.15480/882.2424 Resolving-System kostenfrei, http://hdl.handle.net/11420/3519 Resolving-System kostenfrei, https://doi.org/10.1039/c9ra05078g Resolving-System, https://doi.org/10.1039/c9ra05078g LFER, http://nbn-resolving.de/urn:nbn:de:gbv:830-882.051340 LFER, LFER 2019-12-05T00:00:00Z |
spellingShingle | Finsel, Maik, Hemme, Maria, Döring, Sebastian, Rüter, Jil S. V., Dahl, Gregor Thomas, Ritter, Martin, Kornowski, Andreas, Ritter, Martin, Weller, Horst, Vossmeyer, Tobias, Synthesis and thermal stability of ZrO2SiO2 core-shell submicron particles, ZrO2@SiO2 core-shell submicron particles are promising candidates for the development of advanced optical materials. Here, submicron zirconia particles were synthesized using a modified sol-gel method and pre-calcined at 400 °C. Silica shells were grown on these particles (average size: ∼270 nm) with well-defined thicknesses (26 to 61 nm) using a seeded-growth Stöber approach. To study the thermal stability of bare ZrO2 cores and ZrO2@SiO2 core-shell particles they were calcined at 450 to 1200 °C. After heat treatments, the particles were characterized by SEM, TEM, STEM, cross-sectional EDX mapping, and XRD. The non-encapsulated, bare ZrO2 particles predominantly transitioned to the tetragonal phase after pre-calcination at 400 °C. Increasing the temperature to 600 °C transformed them to monoclinic. Finally, grain coarsening destroyed the spheroidal particle shape after heating to 800 °C. In striking contrast, SiO2-encapsulation significantly inhibited grain growth and the t → m transition progressed considerably only after heating to 1000 °C, whereupon the particle shape, with a smooth silica shell, remained stable. Particle disintegration was observed after heating to 1200 °C. Thus, ZrO2@SiO2 core-shell particles are suited for high-temperature applications up to ∼1000 °C. Different mechanisms are considered to explain the markedly enhanced stability of ZrO2@SiO2 core-shell particles. |
title | Synthesis and thermal stability of ZrO2SiO2 core-shell submicron particles |
title_auth | Synthesis and thermal stability of ZrO2SiO2 core-shell submicron particles |
title_full | Synthesis and thermal stability of ZrO2SiO2 core-shell submicron particles Maik Finsel, Maria Hemme, Sebastian Döring, Jil S. V. Rüter, Gregor T. Dahl, Tobias Krekeler, Andreas Kornowski, Martin Ritter, Horst Weller and Tobias Vossmeyer |
title_fullStr | Synthesis and thermal stability of ZrO2SiO2 core-shell submicron particles Maik Finsel, Maria Hemme, Sebastian Döring, Jil S. V. Rüter, Gregor T. Dahl, Tobias Krekeler, Andreas Kornowski, Martin Ritter, Horst Weller and Tobias Vossmeyer |
title_full_unstemmed | Synthesis and thermal stability of ZrO2SiO2 core-shell submicron particles Maik Finsel, Maria Hemme, Sebastian Döring, Jil S. V. Rüter, Gregor T. Dahl, Tobias Krekeler, Andreas Kornowski, Martin Ritter, Horst Weller and Tobias Vossmeyer |
title_in_hierarchy | Synthesis and thermal stability of ZrO2SiO2 core-shell submicron particles / Maik Finsel, Maria Hemme, Sebastian Döring, Jil S. V. Rüter, Gregor T. Dahl, Tobias Krekeler, Andreas Kornowski, Martin Ritter, Horst Weller and Tobias Vossmeyer, |
title_short | Synthesis and thermal stability of ZrO2SiO2 core-shell submicron particles |
title_sort | synthesis and thermal stability of zro2sio2 core shell submicron particles |
url | http://nbn-resolving.de/urn:nbn:de:gbv:830-882.051340, https://doi.org/10.15480/882.2424, http://hdl.handle.net/11420/3519, https://doi.org/10.1039/c9ra05078g |
urn | urn:nbn:de:gbv:830-882.051340 |