Effect of Pr, Sm, and Tb Doping on the Morphology, Crystallite Size, and N2O Decomposition Activity of Co3O4 Nanorods

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autor(en): Abu-Zied BM, Bawaked SM, Kosa SA, Schwieger W
Zeitschrift: Journal of Nanomaterials
Verlag: Hindawi Publishing Corporation
Jahr der Veröffentlichung: 2015
ISSN: 1687-4110
eISSN: 1687-4129


Abstract


Cobalt(II, III) oxide, Co3O4, is a promising catalyst for nitrous oxide direct decomposition. In this paper we report effect of doping with some rare earth (RE) elements (Pr, Sm, and Tb) on the morphology and crystallite size of Co3O4 nanorods. The various precursors (RE/Co oxalates) were prepared via the microwave assisted method and subsequent calcination. The decomposition pathway of these precursors was followed using thermogravimetric analysis (TGA). Based on thermal analysis results, Pr-, Sm-, and Tb-doped Co3O4 samples were obtained via the calcination in static air at 500 degrees C for their oxalate precursors. X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and hydrogen temperature programmedreduction (H-2-TPR) were used to characterize the RE-doped cobalt oxide catalysts. The activity of the prepared catalysts was investigated for N2O direct decomposition and compared with that of the undoped Co3O4 catalyst. It was shown that the promoted Co3O4 catalysts revealed higher activity compared to the unpromoted one. The dependence of the activity on both the catalysts particle size and the reduction behaviour was discussed.



FAU-Autoren / FAU-Herausgeber

Schwieger, Wilhelm Prof. Dr.
Professur für Technische Chemie (Reaktionstechnik)


Autor(en) der externen Einrichtung(en)
King Abdulaziz University (KAU) / جامعة الملك عبد العزيز


Zitierweisen

APA:
Abu-Zied, B.M., Bawaked, S.M., Kosa, S.A., & Schwieger, W. (2015). Effect of Pr, Sm, and Tb Doping on the Morphology, Crystallite Size, and N2O Decomposition Activity of Co3O4 Nanorods. Journal of Nanomaterials. https://dx.doi.org/10.1155/2015/580582

MLA:
Abu-Zied, Bahaa M., et al. "Effect of Pr, Sm, and Tb Doping on the Morphology, Crystallite Size, and N2O Decomposition Activity of Co3O4 Nanorods." Journal of Nanomaterials (2015).

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Zuletzt aktualisiert 2018-29-06 um 07:23