Synthesis of Yb nanoparticles by laser ablation of ytterbium target in sodium bis(2-ethylhexyl)sulfosuccinate reverse micellar solution

Vincenzo Turco Liveri, Angela Monia Ruggirello, Sebastiano Trusso, Pietro Calandra, Fortunato Neri, Domenico Lombardo

Risultato della ricerca: Articlepeer review

8 Citazioni (Scopus)

Abstract

Surfactant-coated ytterbium nanoparticles were produced by Nd:YAG laser ablation of a Yb bulk target immersed in sodium bis(2-ethylhexyl)sulfosuccinate (AOT)/n-heptane micellar solution. In our experimental conditions, as highlighted by IR spectroscopy, AOT molecules are not decomposed by the intense laser pulses but play a pivotal role in the stabilisation of Yb nanoparticles. The formation of Yb nanoparticles in the liquid phase was monitored by UV–Vis spectroscopy whereas the Yb/AOT composites obtained by evaporation of the organic solvent were characterised by XPS and TEM. Data analysis consistently shows the presence of surfactant-coated, nearly spherical and non-interacting Yb nanoparticles of mean diameter of 3 nm. Moreover, the presence of bigger polycrystalline nanoparticles (about 30%) in coexistence with smaller mono crystalline ones indicates that, after the rapid formation of the pristine Yb nanoparticles from plume condensation, two processes effectively compete for their size distribution: nanoparticle agglomeration and surfactant adsorption.
Lingua originaleEnglish
Numero di pagine4
RivistaMaterials Letters
Volume64
Stato di pubblicazionePublished - 2010

All Science Journal Classification (ASJC) codes

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  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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