5 article(s) from Janiak, Christoph
- Full Research Paper
- Published 15 Apr 2021
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Figure 1: P-XRD pattern of Ni@rGO obtained from a 0.5 wt % dispersion of Ni(COD)2 in [BMIm][NTf2] (space grou...
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Figure 2: TEM images of Ni@rGO obtained from a 0.5 wt % dispersion of Ni(COD)2 in [BMIm][NTf2]. Particle size...
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Figure 3: Left: P-XRD pattern of WO3 powder calcined at 600 °C for 2 h. (space group of WO3: P21/n). Right: S...
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Figure 4: Time dependence of the sensor resistance values of the 0.35 wt % Ni@rGO/WO3 sample under exposure t...
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Figure 5: Left: time dependence of the sensor resistance values of the 0.35 wt % Ni@rGO/WO3 samples (green) u...
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Figure 6: Time dependence of the sensor resistance values (left) and sensor response (right) of 1.00 wt % Ni@...
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Figure 7: Left: magnetization as a function of temperature for the Ni@rGO composite in argon atmosphere. Righ...
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- Full Research Paper
- Published 11 May 2020
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Scheme 1: Schematic representation of Ni/CTF-1 composite synthesis via microwave-assisted thermal decompositi...
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Figure 1: PXRD patterns of Ni/CTF-1 composite materials. The simulated diffractograms for hexagonal close-pac...
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Figure 2: TEM images of Ni/CTF-1-600-22 showing (a) Ni nanoparticles supported on CTF, (b,c) the aggregation ...
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Figure 3: SEM images and EDX elemental mappings of Ni for (a) Ni/CTF-1-400-20, (b) Ni/CTF1-400-35, (c) Ni/CTF...
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Figure 4: Nitrogen adsorption and desorption isotherms (at 77 K) of Ni/CTF-1 composites.
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Figure 5: XPS measurements of Ni/CTF-1-600-22 with deconvoluted Ni 2p (left) (Sat. = satellite) and N 1s spec...
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Figure 6: (a) OER polarization curves of various materials, (b) overpotential values calculated from (a); (c)...
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Figure 7: Nyquist plots recorded in 1 mol/L KOH solution.
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Figure 8: (a) ORR polarization curves of various materials, (b) half-wave potential values calculated from (a...
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- Full Research Paper
- Published 21 Aug 2019
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Figure 1: Top: HRTEM images of Ni/Ga nanoparticles from a 0.5 wt % dispersion of Ni(COD)2 and GaCp* in [BMIm]...
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Figure 2: HRTEM images: a) Ni/Ga nanoparticles from a 1 wt % dispersion of Ni(COD)2 and GaCp* in [BMIm][BF4] ...
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Figure 3: HRTEM image and particle size distribution of 0.5 wt % dispersion of NiGa nanoparticles from Ni(COD)...
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Figure 4: HRTEM images of NiGa nanoparticles (small particles) and Ga(Ni) nanoparticles (large particles) fro...
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Figure 5: HRTEM images of NiGa nanoparticles (small particles) and Ga(Ni) nanoparticles (large particles) fro...
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Figure 6: HRXPS region of the O 1s orbital of NiGa/Ga(Ni) nanoparticle samples obtained by microwave-induced ...
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Figure 7: Top: HRTEM images of the Ga(O) nanoparticles from a 0.5 wt % dispersion of GaCp* in [BMIm][NTf2] an...
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Figure 8: Top: HAADF-STEM images of Ga(O) nanoparticles from 0.5 wt % dispersion of GaCp* in [BMIm][Ntf2]. HA...
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Figure 9: TEM images: a) Ni nanoparticles from 1 wt % dispersion of Ni(COD)2 and GaCp* in [EMIm][B(CN)4] afte...
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Figure 10: Top: Hydrogen uptake as a function of the time for the semihydrogenation of 0.018 mol 4-octyne (2 g...
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Figure 11: Hydrogen uptake as a function of the time for the semihydrogenation of 0.009 mol 4-octyne (1 g, 1.3...
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Figure 12: HRTEM image of precipitated NiGa nanoparticles before the catalysis (left) and highly agglomerated ...
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- Full Research Paper
- Published 28 Jun 2018
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Scheme 1: Synthesis of REF3-NPs or RE-NPs from the rare-earth metal amidinates RE(amd)3 and Eu(dpm)3 by micro...
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Figure 1: TEM images and particle size histogram (from 128 particles) of 1.0 wt % ErF3-NPs in [BMIm][BF4] fro...
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Figure 2: PXRD and SAED (ErF3 reference peaks in red from COD 4030804, orthorhombic structure with space grou...
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Figure 3: EDX of 1.0 wt % ErF3-NPs in [BMIm][BF4] from Er(amd)3.
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Figure 4: Overview and HR-XPS of 1.0 wt % ErF3-NPs in [BMIm][BF4] from Er(amd)3. The red and green bars are a...
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Figure 5: Cyclic voltammetry of a half-cell with ErF3 as working electrode and lithium foil as counter electr...
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Figure 6: TEM images and particle size histogram of 1.0 wt % Gd-NPs in [BMIm][NTf2] from Gd(amd)3.
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Figure 7: SAED (Gd reference peaks in red from COD 1522526, cubic crystal system with space group Im−3m) and ...
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Figure 8: Overview and HR-XPS of 1.0 wt % Gd-NPs in [BMIm][NTf2] from Gd(amd)3. The red and green bars are a ...
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Figure 9: TEM images, particle-size histogram and EDX of 1.0 wt % Gd-NPs in PC from Gd(amd)3.
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Figure 10: HR-XPS of 1.0 wt % Gd-NPs in PC from Gd(amd)3. The red and green bars are a guide to the eye on the...
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- Full Research Paper
- Published 22 Nov 2017
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Scheme 1: Synthesis scheme of MFx@TRGO from [M(AMD)n] and [Eu(dpm)3] by microwave (MW)-assisted thermal decom...
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Figure 1: Example PXRD of 0.5 wt % PrF3@TRGO-SH in [BMIm][BF4] synthesized from [Pr(AMD)3]. PrF3 reference re...
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Figure 2: TEM images of PrF3@TRGO-400 dispersions from [Pr(AMD)3] in [BMIm][BF4].
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Figure 3: XPS of PrF3@TRGO-400 dispersions from [Pr(AMD)3] in [BMIm][BF4].
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Figure 4: The electrochemical performance of FeF2@TRGO-400 as cathode material for lithium-ion batteries. (a)...
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