Process design of ultrasonic spray pyrolysis synthesis of RuO2/TiO2 nanoparticles for catalytic applications
Zusammenfassung der Projektergebnisse
Ruthenium oxide (RuO2) is a promising catalyst material for various industrially important chemical reactions. It is well known that RuO2, if deposited on a TiO2 support, can act as an efficient electron transfer catalyst. The most important aim in this study was to produce the RuO2/TiO2 core-shell nanoparticles with improved catalytic properties and a long-time stability using the ultrasonic spray pyrolysis (USP) method in a single step process. The obtained particles were characterized by several methods. The results of the direct synthesis have not confirmed the formation of RuO2/TiO2 core/shell nanoparticles. In order to form the desired core-shell morphology of the RuO2/TiO2 new equipment for multistep USP-synthesis was developed. The ideally core-shell structure was reached using this new approach. The additional investigations with the aim of optimizing both structure and process shall be performed. Our multistep USP synthesis offers a potential for the design and the development of various complex systems for different applications.
Projektbezogene Publikationen (Auswahl)
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(2010): Direct synthesis of RuO2/TiO2 nanoparticles with core-and-shell structure for potential catalytic application, Proc. SPRAY 2010, 9. Workshop über Sprays, Techniken der Fluidzerstäubung und Untersuchung von Sprühvorgängen, Fritsching, U. and Gutheil, E. (Ed.), Heidelberg 3.-5. Mai 2010
Stopic, S., Schroeder, M., Zaunbrecher, R., Morscheiser, J., Friedrich, B.
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(2010): Process Design of ultrasonic spray pyrolysis synthesis of Ru/TiO2 nanoparticles, ILASS-Europe 2010, 23rd Annual Conference on Liquid Atomization and Spray Systems, Brno, Czech Republic, 191-192
Stopic, S., Schroeder, M., Hellmann, A., Friedrich, B.
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(2011): Controlled droplet size distribution in ultrasonic spray pyrolysis, Metall, 10, 455-459
Bogovic, J., Schwinger, A., Stopic, S., Schroeder, J., Gaukel, V., Schuhmann, H.P., Friedrich, B.
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(2011): Nanosized metallic oxide produced by ultrasonic spray pyrolysis method, Proceeding of European Metallurgical Conference 2011, Duesseldorf, June 26-June 29, 2011, Volume 3: Resources efficiency in the non-ferrous metals industry-optimization and improvement, 1053-1064
Bogovic, J., Stopic, S., Friedrich B.
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(2012): Synthesis and characterization of RuO2/TiO2-Nanoparticles for potential catalytic applications, Workshop Spray 2012, Berlin
Stopic, S., Friedrich, B., Schroeder, M.
