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Effect of the preparation method on the physicochemical properties and the CO oxidation performance of nanostructured CeO2/TiO2 oxides

Stefa Sofia, Lykaki Maria, Fragkoulis Dimitrios, Binas Vassilios, Pandis Pavlos, Stathopoulos Vassilis, Konsolakis Michail

Απλή Εγγραφή


URIhttp://purl.tuc.gr/dl/dias/2DFE854A-C196-4183-853D-4A5DFE3C5DEB-
Αναγνωριστικόhttps://doi.org/10.3390/pr8070847-
Αναγνωριστικόhttps://www.mdpi.com/2227-9717/8/7/847/htm-
Γλώσσαen-
Μέγεθος16 pagesen
Μέγεθος2,45 megabytesen
ΤίτλοςEffect of the preparation method on the physicochemical properties and the CO oxidation performance of nanostructured CeO2/TiO2 oxidesen
ΔημιουργόςStefa Sofiaen
ΔημιουργόςΣτεφα Σοφιαel
ΔημιουργόςLykaki Mariaen
ΔημιουργόςΛυκακη Μαριαel
ΔημιουργόςFragkoulis Dimitriosen
ΔημιουργόςBinas Vassiliosen
ΔημιουργόςPandis Pavlosen
ΔημιουργόςStathopoulos Vassilisen
ΔημιουργόςKonsolakis Michailen
ΔημιουργόςΚονσολακης Μιχαηλel
ΕκδότηςMDPIen
ΠερίληψηCeria-based mixed oxides have been widely studied in catalysis due to their unique surface and redox properties, with implications in numerous energy- and environmental-related applications. In this regard, the rational design of ceria-based composites by means of advanced synthetic routes has gained particular attention. In the present work, ceria–titania composites were synthesized by four different methods (precipitation, hydrothermal in one and two steps, Stöber) and their effect on the physicochemical characteristics and the CO oxidation performance was investigated. A thorough characterization study, including N2 adsorption-desorption, X-ray diffraction (XRD), scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM/EDS), transmission electron microscopy (TEM) and H2 temperature-programmed reduction (H2-TPR) was performed. Ceria–titania samples prepared by the Stöber method, exhibited the optimum CO oxidation performance, followed by samples prepared by the hydrothermal method in one step, whereas the precipitation method led to almost inactive oxides. CeO2/TiO2 samples synthesized by the Stöber method display a rod-like morphology of ceria nanoparticles with a uniform distribution of TiO2, leading to enhanced reducibility and oxygen storage capacity (OSC). A linear relationship was disclosed among the catalytic performance of the samples prepared by different methods and the abundance of reducible oxygen species.en
ΤύποςPeer-Reviewed Journal Publicationen
ΤύποςΔημοσίευση σε Περιοδικό με Κριτέςel
Άδεια Χρήσηςhttp://creativecommons.org/licenses/by/4.0/en
Ημερομηνία2021-07-14-
Ημερομηνία Δημοσίευσης2020-
Θεματική ΚατηγορίαCeO2/TiO2 mixed oxidesen
Θεματική ΚατηγορίαStöber methoden
Θεματική ΚατηγορίαCeria nanorodsen
Θεματική ΚατηγορίαCO oxidationen
Βιβλιογραφική ΑναφοράS. Stefa, M. Lykaki, D. Fragkoulis, V. Binas, P. K. Pandis, V. N. Stathopoulos, and M. Konsolakis, “Effect of the preparation method on the physicochemical properties and the CO oxidation performance of nanostructured CeO2/TiO2 oxides,” Processes, vol. 8, no. 7, Jul. 2020. doi: 10.3390/pr8070847en

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