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Cobalt nanostructures have been prepared by a chemical route based on the Co (II) reduction in the confined space of cobalt bis (2-ethylhexyl) sulfosuccinate (Co (DEHSS) 2) reverse micelles dispersed in n-heptane. This procedure involves the rapid formation of surfactant softly coated Co nanostructures followed by a slow separation process of the magnetic-field responsive Co/surfactant nanocomposites from the liquid phase. The detailed structure of thin films of the Co/surfactant nanocomposites has been investigated by scanning force microscopy (SFM). The thin films were characterized by different anisotropic features. Micrometric long domains of self-aligned ellipsoidal NPs (tens of nanometers in size) have been observed, together with bendable micrometric long homogeneous nanofibers (NFs). The film structures were strongly dependent on the Co/surfactant ratio and, by increasing the Co percentage, the …
IOP Publishing
Publication date: 
13 May 2009

Sebastiano Cataldo, Bruno Pignataro, Angela Ruggirello, Corrado Bongiorno, Vincenzo Turco Liveri

Biblio References: 
Volume: 20 Issue: 22 Pages: 225605