[seminar] Seminar FO, Djerdj

[hbuljan at phy.hr]

Poštovani kolege,

podsjećam na današnji seminar.

Srdačan pozdrav,
Hrvoje Buljan

-------------------------------------------
Vrijeme:   srijeda, 27. 09. 2006., 14:15 sati (točno)
Mjesto:     Fizički odsjek, Bijenička c. 32, predavaonica F102
-------------------------------------------

        NONAQUEOUS SYNTHESIS AND CHARACTERIZATION OF
                METAL OXIDE NANOPARTICLES

                        Igor Djerdj
    Max Planck Institute of Colloids and Interfaces (MPIKGF),
          Research Campus Golm, Potsdam 14424, Germany
    Department of Physics, Faculty of Science, University of Zagreb,
          Bijenička 32 P.O. Box 331, 10002 Zagreb, Croatia


    Nonaqueous solution routes to metal oxide nanoparticles are a
valuable alternative to the well-known aqueous sol-gel processes,
offering advantages such as high crystallinity at low temperatures, robust
synthesis parameters and ability to control the crystal growth without the
use of surfactants.
    The talk will present the synthesis of crystalline metal
oxide nanoparticles based on nonaqueous soft-chemistry routes involving
the reaction of metal oxide precursors such as metal halides, alkoxides or
acetylacetonates with organic solvents like benzyl alcohol, benzylamine or
various ketones. Control over particle size and shape is achieved solely
by the solvent without any additional structure-directing agents. This
synthesis methodology enables the preparation of a large variety of binary
as well as ternary metal oxides on the nanoscale, often with crystallite
sizes well below 10 nm. Furthermore, the simultaneous use of two or more
chemically different precursors allows the controlled preparation of doped
metal oxide nanoparticles, thus providing a powerful tool to tailor the
chemical as well as the physical properties. As an illustrative example
the synthesis of La(OH)3 nanoparticles as well as Mn-O nanoparticles will
be presented.



			Voditelj seminara FO
			Hrvoje Buljan, hbuljan at phy.hr

-------------------------------