Synthesis of rare-earth metal and rare-earth metal-fluoride nanoparticles in ionic liquids and propylene carbonate

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

  • Marvin Siebels - , Heinrich Heine Universität Düsseldorf (Autor:in)
  • Lukas Mai - , Ruhr-Universität Bochum (Autor:in)
  • Laura Schmolke - , Heinrich Heine Universität Düsseldorf (Autor:in)
  • Kai Schütte - , Heinrich Heine Universität Düsseldorf (Autor:in)
  • Juri Barthel - , Rheinisch-Westfälische Technische Hochschule Aachen (Autor:in)
  • Junpei Yue - , Justus-Liebig-Universität Gießen (Autor:in)
  • Jörg Thomas - , Max Planck Institute for Iron Research (Autor:in)
  • Bernd M. Smarsly - , Justus-Liebig-Universität Gießen (Autor:in)
  • Anjana Devi - , Ruhr-Universität Bochum (Autor:in)
  • Roland A. Fischer - , Technische Universität München (Autor:in)
  • Christoph Janiak - , Heinrich Heine Universität Düsseldorf (Autor:in)

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][BF4]), 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([BMIm][NTf2]) and in propylene carbonate (PC) yield oxide-free rare-earth metal nanoparticles (RE-NPs) in [BMIm][NTf2] and PC for RE = Pr, Gd and Er or rare-earth metal-fluoride nanoparticles (REF3-NPs) in the fluoridedonating IL [BMIm][BF4] for RE = Pr, Eu, Gd and Er. The crystalline phases and the absence of significant oxide impurities in RE-NPs and REF3-NPs were verified by powder X-ray diffraction (PXRD), selected area electron diffraction (SAED) and highresolution 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 REF3-NPs from [BMIm][BF4]. The RE-NPs from [BMIm][NTf2] or PC showed diameters of (1.5 ± 0.5) to (5 ± 1) nm. The characterization was completed by energy-dispersive X-ray spectroscopy (EDX).

Details

OriginalspracheEnglisch
Seiten (von - bis)1881-1894
Seitenumfang14
FachzeitschriftBeilstein journal of nanotechnology
Jahrgang9
Ausgabenummer1
PublikationsstatusVeröffentlicht - 2018
Peer-Review-StatusJa
Extern publiziertJa

Schlagworte

Schlagwörter

  • Ionic liquids, Metal amidinates, Rare-earth metal nanoparticles, Rare-earth metal-fluoride nanoparticles, Soft wet-chemical synthesis