1 research outputs found
Two-step growth mechanism of supported Co3O4-based sea-urchin like hierarchical nanostructures
The formation mechanism of Co3O4-based sea-urchin like nanostructures from Co-O-B layers is unveiled.
In this process, promoted by oxidizing annealing, B plays a major role, inducing first a chemical reduction of Co and the formation of a metallic particle core.
The growth of nano-needles from the particle surface occurs through outdiffusion and oxidation of Co from the metallic reservoir