Study on oxidation layer of size controlled Nickel nanoparticles

• Autor(es): Coutinho, Paulo J. G. ; Xuriguera, E. ; Benelmekki, M. ; Segarra, M. ; Martínez, Ll.
• Data: 2011
• Identificador Persistente: http://hdl.handle.net/1822/11769
• Origem: RepositóriUM - Universidade do Minho
• Tipo de Documento: Artigo
• Idioma: Inglês

Descrição

Documento submetido para revisão pelos pares. A publicar em Nanoscale Research Letters. ISSN 1556-276X Research on morphology and structure of oxidation layer of Ni nanoparticles (NPs) is reported. Ni NPs were obtained by wet chemical solution method and their size controlled in the nickel nucleation step using a non-ionic surfactant. Particles were about 50nm in size and polycrystalline. Combining high-angle annular dark field (HAADF) and electron energy loss spectroscopy (EELS), the nickel oxide layer was identified as not continuous and with non homogenous thickness.