In:
Beilstein Journal of Nanotechnology, Beilstein Institut, Vol. 9 ( 2018-06-28), p. 1881-1894
Abstract:
Decomposition of rare-earth tris( N , N ′-diisopropyl-2-methylamidinato)metal(III) complexes [RE{MeC(N(iPr) 2 )} 3 ] (RE(amd) 3 ; RE = Pr(III), Gd(III), Er(III)) and tris(2,2,6,6-tetramethyl-3,5-heptanedionato)europium(III) (Eu(dpm) 3 ) induced by microwave heating in the ionic liquids (ILs) 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIm][BF 4 ]), 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([BMIm] [NTf 2 ]) and in propylene carbonate (PC) yield oxide-free rare-earth metal nanoparticles (RE-NPs) in [BMIm] [NTf 2 ] and PC for RE = Pr, Gd and Er or rare-earth metal-fluoride nanoparticles (REF 3 -NPs) in the fluoride-donating IL [BMIm][BF 4 ] for RE = Pr, Eu, Gd and Er. The crystalline phases and the absence of significant oxide impurities in RE-NPs and REF 3 -NPs were verified by powder X-ray diffraction (PXRD), selected area electron diffraction (SAED) and high-resolution X-ray photoelectron spectroscopy (XPS). The size distributions of the nanoparticles were determined by transmission electron microscopy (TEM) and high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) to an average diameter of (11 ± 6) to (38 ± 17) nm for the REF 3 -NPs from [BMIm][BF 4 ]. The RE-NP s from [BMIm][NTf 2 ] or PC showed diameters of (1.5 ± 0.5) to (5 ± 1) nm. The characterization was completed by energy-dispersive X-ray spectroscopy (EDX).
Type of Medium:
Online Resource
ISSN:
2190-4286
DOI:
10.3762/bjnano.9.180
Language:
English
Publisher:
Beilstein Institut
Publication Date:
2018
detail.hit.zdb_id:
2583584-1
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