- Ordered arrays of size-selected oxide nanoparticles.
Ordered arrays of size-selected oxide nanoparticles.
Physical review letters (2012-09-26)
Luca Gragnaniello, Teng Ma, Giovanni Barcaro, Luca Sementa, Fabio R Negreiros, Alessandro Fortunelli, Svetlozar Surnev, Falko P Netzer
PMID23003060
ZUSAMMENFASSUNG
A bottom-up approach to produce a long-range ordered superlattice of monodisperse and isomorphic metal-oxide nanoparticles (NP) supported onto an oxide substrate is demonstrated. The synthetic strategy consists of self-assembling metallic NP on an ultrathin nanopatterned aluminum oxide template followed by a morphology-conserving oxidation process, and is exemplified in the case of Ni, but is generally applicable to a wide range of metallic systems. Both fully oxidized and core-shell metal-metal-oxide particles are synthesized, up to 3-4 nm in diameter, and characterized via spectroscopic and theoretical tools. This opens up a new avenue for probing unit and ensemble effects on the properties of oxide materials in the nanoscale regime.
MATERIALIEN
Produktnummer
Marke
Produktbeschreibung
Sigma-Aldrich
Nickel(II)-oxid, nanopowder, <50 nm particle size (TEM), 99.8% trace metals basis