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Synthesis, structural and morphological characterizations of nano-Ru-based perovskites/RGO composites

Galal, A.; Hassan, H. K.; Atta, N. F.; Abdel-Mageed, A. M.; Jacob, T.

Abstract:
Highly-dispersed Ru-based perovskites supported on reduced graphene oxide (A-RG) nanocomposites are prepared using different A-metal salts (Sr(NO₃)₂, Ba(NO₃)₂ and Ca(NO₃)₂). The procedure is based on a redox reaction between the metal precursors and graphene oxide (GO) using two different routes of reaction initiation: through thermal heating or by microwave-assisted heating. The resulting nanocomposites do not require further calcination, making this method less energy-demanding. In addition, no additional chemical reagents are required for either the GO reduction or the metal precursor oxidation, leading to an overall simple and direct synthesis method. The structure and morphology of the as-prepared A-RG (non-calcined) nanocomposites are characterized using various structural analyses including XRD, XPS, SEM/EDX and HR-TEM. Changing metal A in the perovskite as well as the “activation method” resulted in significant structural and morphological changes of the formed composites. SrRuO₃ and BaRuO₃ in combination with RuO₂ are obtained using a conventional combustion method, while SrRuO₃ (~1 nm size) in combination with Ru nanoparticles are successfully prepared using microwave irradiation. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000096228
Veröffentlicht am 15.07.2019
Originalveröffentlichung
DOI: 10.1038/s41598-019-43726-1
Scopus
Zitationen: 1
Web of Science
Zitationen: 2
Coverbild
Zugehörige Institution(en) am KIT Helmholtz-Institut Ulm (HIU)
Publikationstyp Zeitschriftenaufsatz
Jahr 2019
Sprache Englisch
Identifikator ISSN: 2045-2322
KITopen-ID: 1000096228
Erschienen in Scientific reports
Band 9
Heft 1
Seiten Art. Nr.: 7948
Nachgewiesen in Web of Science
Scopus
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