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Microwave Solvothermal Synthesis of High Quality Nanoparticles

Jacek Wojnarowicz 

Polish Academy of Sciences, Institute of High Pressure Physics (UNIPRESS), Sokolowska 29/37, Warszawa 01-142, Poland


Expertise of Laboratory of Nanostructures IWC PAN lies in synthesis and comprehensive research on nanomaterials. Synthesis of nanomaterials requires the use of state of the art, advanced reactors. For more than 10 years the Laboratory of Nanostructures for Photonic and Nanomedicine IWC PAN has been developing solvothermal technologies of nanoparticles production. The process is based on the MSS Microwave Solvothermal Synthesis. The precursors of the reaction (solutions, suspensions) are enclosed in a pressure vessel and as a result of heating with the microwave energy, the temperature increases above the boiling point. The MSS process allows to prevent contamination of synthesis, by sealing the reaction vessel, which is made of chemically inert material, so an ultra-pure product is obtained. The mixing effect occurs in a microwave reactor, so that the obtained product is homogeneous. MSS technology innovation is the possibility to control the size of crystallite nanoparticles in a narrow distribution of size. Thanks to this technology, we are able to obtain nanoparticles in the range from 9 to 100 nm in ultra-short synthesis time. We can obtain power density in liquid reaching up to 10 W/ml. We specialize in the production of: HAp, ZnO and ZrO2 nanopowders.

We have constructed innovative reactors MSS-1 and MSS-2 (Fig. 1) and our reactors were awarded a gold medal at:  

1)      MSS-2 International Fair in Poznan, Innovation Technology Machines Poland, 2011

2)      MSS-1 International Exhibition in St. Petersburg in 2009.

MMS-2 technical parameters:

-          Maximum working pressure to 10 MPa

-          Temperature up to 260°C

-          Capacity 470 cm3

-          Microwave Heating at 2450 Mhz

-          Microwave power up to 3 kW

-          Chamber material PTFE and ceramic Al2O3


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Related papers

Presentation: Oral at Nano PL 2014, Symposium A, by Jacek Wojnarowicz
See On-line Journal of Nano PL 2014

Submitted: 2014-06-21 02:37
Revised:   2014-10-13 14:44