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Effect of crystal structure on nanofiber morphology and chemical modification, design of CeO2/PVDF membrane
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SYSNO ASEP 0557464 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Effect of crystal structure on nanofiber morphology and chemical modification, design of CeO2/PVDF membrane Author(s) Verner, A. (CZ)
Tokarský, J. (CZ)
Čapková, P. (CZ)
Ryšánek, P. (CZ)
Benada, Oldřich (MBU-M) ORCID, RID
Henych, Jiří (UACH-T) SAI, RID, ORCID
Tolasz, Jakub (UACH-T) RID, ORCID, SAI
Kormunda, M. (CZ)
Syrový, M. (CZ)Article number 107568 Source Title Polymer Testing. - : Elsevier - ISSN 0142-9418
Roč. 110, JUN 2022 (2022)Number of pages 7 s. Language eng - English Country GB - United Kingdom Keywords molecular-dynamics simulations ; cerium oxide ; oxygen vacancies ; stoichiometric reagents ; nanostructured ceria ; pvdf membranes ; nanoceria ; ceo2 ; nanocrystals ; chemistry ; Polyvinylidene fluoride ; CeO2 ; Nanofiber ; Structure ; Morphology ; Molecular simulation Subject RIV EC - Immunology OECD category Immunology Subject RIV - cooperation Institute of Inorganic Chemistry - Inorganic Chemistry R&D Projects EF18_046/0015586 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) LM2018124 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Research Infrastructure NanoEnviCz II - 90124 - Ústav fyzikální chemie J. Heyrovského AV ČR, v. v. i. Method of publishing Open access Institutional support MBU-M - RVO:61388971 ; UACH-T - RVO:61388980 UT WOS 000789618000003 EID SCOPUS 85127534451 DOI 10.1016/j.polymertesting.2022.107568 Annotation Layered crystal structures tend to form flat platelet-like crystallites, and nanofibers having such a structure exhibit strip-like morphology. Crystallographic plane forming the dominant flat surface of the nanofibers can be used for surface modification with catalytically active nanoparticles capable of anchoring to the dominant flat surface. In this study, polyvinylidene fluoride (PVDF) nanofibers exhibiting strip-like morphology and longitudinal folding were prepared using wire electrospinning, and surface modified with CeO2 nanoparticles. Experimental characterization of the CeO2/PVDF membrane using (high-resolution) scanning electron microscopy and X-ray photoelectron spectroscopy was supplemented by a force field-based molecular modeling. The modeling has shown that the dominant PVDF(100) plane is suitable for anchoring the CeO2 nanoparticles. In this respect, the PVDF(100) plane is comparable to the less exposed fluorine-oriented PVDF(010) plane, and both planes show stronger interaction with CeO2 compared to hydrogen-oriented PVDF(010) plane. Molecular modeling also revealed preferred crystallographic orientations of anchored CeO2 nanoparticles: these are the catalytically active planes (100), (110), and (111). The successful surface modification and the finding that CeO2 nanoparticles on the dominant PVDF(100) surface can preferentially exhibit these crystallographic orientations thus provides the possibility of various practical applications of the CeO2/PVDF membrane. Workplace Institute of Microbiology Contact Eliška Spurná, eliska.spurna@biomed.cas.cz, Tel.: 241 062 231 Year of Publishing 2023 Electronic address https://www.sciencedirect.com/science/article/pii/S0142941822000939?via%3Dihub
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