Laser-Assisted Synthesis of Colloidal FeWxOy and Fe/FexOy Nanoparticles in Water and Ethanol

Author(s)
Niusha Lasemi, Oscar Bomati Miguel, Ruth Lahoz, Vassili. V. Lennikov, Ulrich Pacher, Christian Rentenberger, Wolfgang Kautek
Abstract

Homogeneous polycrystalline FexOy nanoparticles were generated by ablation of iron targets in water by nanosecond laser pulses at 532nm. In ethanol, crystalline core-shell Fe/FexOy structures with size medians around 20nm were produced. The ablation of FeWxOy targets in water resulted in crystalline hollow shells and homogeneous FeWxOy nanoparticles. In contrast, amorphous core-shell FeWxOy nanoparticles with a median size of 17nm were produced in ethanol. The size distribution of both the FexOy and the FeWxOy particles showed a slight dependence on fluence and pulse number. This may be related to primary and secondary ablation and modification mechanisms.

Organisation(s)
Department of Physical Chemistry, Physics of Nanostructured Materials
External organisation(s)
University of Cádiz, Universidad de Zaragoza
Journal
ChemPhysChem: a European journal of chemical physics and physical chemistry
Volume
19
Pages
1414-1419
No. of pages
6
ISSN
1439-4235
DOI
https://doi.org/10.1002/cphc.201701214
Publication date
06-2018
Peer reviewed
Yes
Austrian Fields of Science 2012
Physical chemistry
Keywords
Portal url
https://ucris.univie.ac.at/portal/en/publications/laserassisted-synthesis-of-colloidal-fewxoy-and-fefexoy-nanoparticles-in-water-and-ethanol(b6d39331-54a2-40a1-9336-64a063698148).html