Combining microwave and pressure techniques for hydrothermal synthesis of ZnO and ZrO2 nanopowders doped with a range of metal ions
|Witold Łojkowski 1, Tadeusz Chudoba 1, Wojciech Dzwolak 1, Aharon Gedanken 6, Marek Godlewski 2,3, Ewa Grzanka 1, Hubert Matysiak 4, Agnieszka Opalińska 1,4, Robert R. Piticescu 5, Adam M. Presz 1, Edward Reszke 7,8, Tomasz Strachowski 1,4, Sergiy A. Yatsunenko 2|
1. Polish Academy of Sciences, Institute of High Pressure Physics (UNIPRESS), Sokolowska 29/37, Warszawa 01-142, Poland
Combining high pressure and microwaves permits to decrease the reaction time one order of magnitude comparing to conventional hydrothermal reaction because of direct heating of the reacting fluids. On the other hand pressure permits to use high microwave power without sparking and boiling.
We carried out synthesis of nanopowders of zirconia doped with rare earth ions and ZnO doped with Al, Mn, Co, Ni, Ce. We studied also the effect of annealing on the nanopowders properties. The nanopowders were characterized as follows: density specific surface,., grain size and grain size distribution, lattice constants and zeta potential, FTIR, luminescence and true chemical composition using ICP technique.
It was found that hydrothermal synthesis followed by annealing is a promising method for production of nanopowders doped with ions.Work supported by COST action D30 and Polish Research Network WITNANO
Presentation: Oral at E-MRS Fall Meeting 2007, Acta Materialia Gold Medal Workshop, by Witold Łojkowski
See On-line Journal of E-MRS Fall Meeting 2007
Submitted: 2007-07-26 19:01 Revised: 2009-06-07 00:44