Nanophase oxide formation by intraparticle reaction

We have generated 0.1–0.5 μm aggregates that consist of nanocrystalline P d O and V 2 O 5 . The particles were generated by reacting aerosol particles that are composed of metal nitrates in a hot flowing gas stream. The microstructure of the particles was controlled by varying the temperature. Nanophase materials were formed at temperatures low enough to avoid grain growth in each particle, but sufficiently high to fully react the precursors. This process allows reasonable production rates of nanophase materials. Generation of multicomponent materials is also possible.