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  Synthesis of nickel/gallium nanoalloys using a dual-source approach in 1-alkyl-3-methylimidazole ionic liquids

Simon, I., Hornung, J., Barthel, J., Thomas, J., Finze, M., Fischer, R. A., et al. (2019). Synthesis of nickel/gallium nanoalloys using a dual-source approach in 1-alkyl-3-methylimidazole ionic liquids. Beilstein Journal of Nanotechnology, 10, 1754-1767. doi:10.3762/bjnano.10.171.

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Synthesis of nickel_gallium nanoalloys using a dual-source approach in 1-alkyl-3-methylimidazole ionic liquids - 2190-4286-10-171.pdf (Publisher version), 4MB
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Synthesis of nickel_gallium nanoalloys using a dual-source approach in 1-alkyl-3-methylimidazole ionic liquids - 2190-4286-10-171.pdf
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2019
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 Creators:
Simon, Ilka1, Author
Hornung, Julius2, Author
Barthel, Juri3, Author              
Thomas, Jörg4, Author              
Finze, Maik5, Author
Fischer, Roland A.6, Author              
Janiak, Christoph7, Author              
Affiliations:
1Institut für Anorganische Chemie und Strukturchemie, Heinrich-Heine-Universität Düsseldorf, 40204 Düsseldorf, Germany, ou_persistent22              
2Gemeinschaftslabor für Elektronenmikroskopie RWTH-Aachen, Ernst Ruska-Centrum für Mikroskopie und Spektroskopie mit Elektronen, 52425 Jülich, Germany, ou_persistent22              
3Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany, ou_persistent22              
4Structure and Nano-/ Micromechanics of Materials, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863398              
5Institut für Anorganische Chemie, Institut für nachhaltige Chemie & Katalyse mit Bor (ICB), Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany, ou_persistent22              
6Department of Chemistry, Technische Universität München, Garching, Germany, ou_persistent22              
7Institut für Anorganische Chemie und Strukturchemie, Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany, ou_persistent22              

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Free keywords: Binary alloys; Crystallinity; High resolution transmission electron microscopy; Hydrocarbons; Ionic liquids; Microwaves; Nanoparticles; Nickel; Scanning electron microscopy; Synthesis (chemical); X ray photoelectron spectroscopy, 1 ,5-cyclooctadiene; Energy dispersive X-ray spectrometry; High-angle annular dark fields; Microwave decomposition; Microwave-induced; Pentamethylcyclopentadienyl; Semihydrogenation; Wet chemical synthesis, Gallium alloys
 Abstract: NiGa is a catalyst for the semihydrogenation of alkynes. Here we show the influence of different dispersion times before microwave- induced decomposition of the precursors on the phase purity, as well as the influence of the time of microwave-induced decomposition on the crystallinity of the NiGa nanoparticles. Microwave-induced co-decomposition of all-hydrocarbon precursors [Ni(COD)2] (COD = 1,5-cyclooctadiene) and GaCp* (Cp* = pentamethylcyclopentadienyl) in the ionic liquid [BMIm][NTf2] selectively yields small intermetallic Ni/Ga nanocrystals of 5 ± 1 nm as derived from transmission electron microscopy (TEM) and high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) and supported by energy-dispersive X-ray spectrometry (EDX), selected-area energy diffraction (SAED) and X-ray photoelectron spectroscopy (XPS). NiGa@[BMIm][NTf2] catalyze the semihydrogenation of 4-octyne to 4-octene with 100 selectivity towards (E)-4-octene over five runs, but with poor conversion values. IL-free, precipitated NiGa nanoparticles achieve conversion values of over 90 and selectivity of 100 towards alkene over three runs. © 2019 Simon et al.

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Language(s): eng - English
 Dates: 2019-08-21
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.3762/bjnano.10.171
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Title: Beilstein Journal of Nanotechnology
  Abbreviation : Beilstein J. Nanotechnol.
Source Genre: Journal
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Publ. Info: Frankfurt am Main : Beilstein-Institut
Pages: - Volume / Issue: 10 Sequence Number: - Start / End Page: 1754 - 1767 Identifier: ISSN: 2190-4286
CoNE: https://pure.mpg.de/cone/journals/resource/2190-4286