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Laser‐Assisted Synthesis of Colloidal FeW x O y and Fe/Fe x O y Nanoparticles in Water and Ethanol
Author(s) -
Lasemi Niusha,
Bomatí Miguel Oscar,
Lahoz Ruth,
Lennikov Vassili. V.,
Pacher Ulrich,
Rentenberger Christian,
Kautek Wolfgang
Publication year - 2018
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201701214
Subject(s) - nanoparticle , amorphous solid , fluence , crystallite , materials science , analytical chemistry (journal) , laser ablation , colloid , homogeneous , crystallography , laser , chemistry , nanotechnology , optics , physics , chromatography , thermodynamics
Homogeneous polycrystalline Fe x O y nanoparticles were generated by ablation of iron targets in water by nanosecond laser pulses at 532 nm. In ethanol, crystalline core‐shell Fe/Fe x O y structures with size medians around 20 nm were produced. The ablation of FeW x O y targets in water resulted in crystalline hollow shells and homogeneous FeW x O y nanoparticles. In contrast, amorphous core‐shell FeW x O y nanoparticles with a median size of 17 nm were produced in ethanol. The size distribution of both the Fe x O y and the FeW x O y particles showed a slight dependence on fluence and pulse number. This may be related to primary and secondary ablation and modification mechanisms.