Low-temperature synthesis of CoO nanoparticles via chemically assisted oxidative decarbonylation
A. Lagunas, A. Mairata i Payeras, C. Jimeno, V. F. Puntes, M. A. Pericàs
Chem. Mater. 2008, 20, 92-100
Abstract: A low-temperature route to pure CoO nanoparticles based on the oxidative decarbonylation of dicobalt octacarbonyl promoted by amine oxides is presented. The small size of the resulting particles (~1.7 nm) leads to spontaneous nanoparticle aggregation. Magnetic measurements show a bimodal behavior with two distinct blocking temperatures, which can be ascribed to the individual CoO nanoparticles and to narrowly size-dispersed aggregates.