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1588496 
Journal Article 
PREPARATION OF TIO2 POWDER BY MICROWAVE-ASSISTED MOLTEN-SALT SYNTHESIS 
Kozakova, Z; Mrlik, M; Sedlacik, M; Pavlinek, V; Kuritka, Ivo; TANGER Ltd 
2011 
345-351 
WOS:000306686700052 
Titanium dioxide powder based on nanorods with the length of
2 to 10 mu m was prepared by a simple and rapid microwave-assisted molten-salt synthesis in a
ceramic kiln designed for glass fusing in common domestic microwave oven which enables to reach
high temperatures in short time. Titanium dioxide powder (P25, Degussa) containing anatase and
rutile phase in a ratio about 3:1 was treated in molten-salt reaction medium in order to obtain
elongated nano-or submicro-particles advantageous for numerous applications. Resulting product
which was prepared in a one step in 30 minutes was composed from highly crystalline pure phase
rutile. As-prepared nano-needles were further coated by polypyrrole in order to increase
stability in suspensions, conductivity as well as electrorheological effect. Conductivity
measurement showed appreciable conductivity of prepared core-shell structure what enables to use
such powders in electronics and as a component of electrorheological fluids. 
titanium dioxide; molten-salt; microwave; powder; nanoparticles; submicroparticles; polypyrrole; coating; needles; core-shell structure