Srećko Stopić, Bernd Friedrich


Ultrasonic spray pyrolysis is a versatile method for preparation of powders of metals, oxides and composites. Nanoparticles of silver were prepared by ultrasonic spray pyrolysis in a horizontal and vertical reactor. Direct synthesis of RuO2-TiO2 nanoparticles with core and shell structure was investigated in a vertical reactor. An influence of reaction parameters (the temperature, the residence time, the concentration of solution, and the ultrasonic frequency) on the morphological characteristics of prepared nanoparticles was studied. Using the ultrasonic spray pyrolysis, the ideally spherical metallic particles were obtained at temperatures below the melting point of metals. Scale up of the ultrasonic spray pyrolysis was applied for the synthesis of nanosized silver. The coating of titanium anode was successfully performed using ultrasonic spray pyrolysis method in an electrostatic field.


ultrasonic spray pyrolysis, synthesis, metals, core-shell

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S. Stopić, Synthesis of nanosized metal-lic particles by ultrasonic spray pyrolysis, Shaker GmbH, Kohlscheid, Germany, (2015), 123.

S. Stopić, I. Ilić, D. Uskoković, Preparation and formation mechanism of submicrometer spherical NiO particles from water solution of NiCl2 by ultrasonic spray pyrolysis, Journal of Science Sintering, Vol. 26 (1994) 145–156.

S. Stopić, I. Ilić, D. Uskoković, Structu-ral and morphological transformations during NiO and Ni particles generations from chloride precursor by ultrasonic spray pyrolysis, Materials Letters, Vol. 24 (1995) 369–376.

S. Stopić, I. Ilić, D. Uskoković, Preparation of Nickel Submicrometer Powders by Ultrasonic Spray Pyrolysis, International Journal of Powder Metallurgy, Vol. 32−1 (1996) 59–65.

S. Stopić, I. Ilić, J. Nedeljković, Z. Rakočević, M. Šušić, D. Uskoković, Influence of hydrogen spillover effect on the properties of submicrometer Ni-powder obtained by ultrasonic spray pyrolysis, Studies in Surface Science and Catalysis, Vol. 112 (1997) 103–110.

S. Stopić, J. Nedeljković, Z. Rakočević, D. Uskoković, Influence of Additives on the Properties of Spherical Ni Particles obtained by Ultrasonic Spray Pyrolysis, Journal of Materials Research, Vol. 14 (1999) 3059–3065.

S. Stopić, B. Friedrich, K. Raic, T. Vol-kov, M. Dimitrijevic, Characterisation of nanopowder morphology obtained by ultrasonic spray pyrolysis, Journal of Metallurgy, Vol. 14−1 (2008) 41−54.

S. Gürmen, B. Ebin, S. Stopic, B. Frie-drich, Nanocrystalline spherical iron–nickel (Fe–Ni) alloy particles prepared by ultrasonic spray pyrolysis and hydrogen reduction (USP-HR), Journal of Alloys and Compounds, Vol. 480 (2009) 529−533.

S. Gürmen, A. Güven, B. Ebin, S. Stopic, B. Friedrich, Synthesis of nanocrystalline spherical cobalt-iron (Co-Fe) alloy particles by ultrasonic spray pyrolysis and hydrogen reduction, Journal of Alloys and Compounds, Vol. 481 (2009) 600−604.

S. Stopic, Synthesis of nanosized metal particles from an aerosol, Military Technical Courier, Vol. LXI−3 (2013) 1−15.

H. Bang, K. Suslick, Application of Ultrasound to the Synthesis of nanostructured Materials, Advanced Materials, Vol. 22 (2010) 1039−1059.

R. Rajan, and A. Pandit, Correlation to predict Droplet Size in Ultrasonic Atomisation, Ultrasonics, Vol. 39 (2001) 235−255.

G. Alkan, F. Diaz, G. Matula, S. Stopic, B. Friedrich, Scaling of nanopowder collection in the process of ultrasonic spray pyrolysis, ERZMETALL-World of Metallurgy, Vol. 70−2 (2017) 97−101.

S. Stopic, M. Schroeder, T. Weirich, B. Friedrich, Synthesis of TiO2 Core/RuO2 Shell Particles using Multistep Ultrasonic Spray Pyrolysis, Materials Research Bulletin, Vol. 48−9 (2013) 3633−3635.

M. Košević, S. Stopic, A. Bulan, J. Kintrup, R. Weber, J. Stevanović, V. Panić, B. Friedrich, A continuous process for the ultrasonic spray pyrolysis synthesis of RuO2-TiO2 particles and their application as an active coating of activated titanium anode, Advanced Powder Technology, Vol. 28−1 (2017) 43−49.



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