| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Ten Brink, Gert H.
University of Groningen
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (32/32 displayed)
- 2024Bridging the gap between high-entropy alloys and metallic glasses:Control over disorder and mechanical properties of coatings
- 2022Taking a closer look - how the microstructure of Dion-Jacobson perovskites governs their photophysics.
- 2022Nanostructure and thermal power of highly-textured and single-crystal-like Bi2Te3 thin filmscitations
- 2022Nanostructure and thermal power of highly-textured and single-crystal-like Bi2Te3 thin filmscitations
- 2022Taking a closer look - how the microstructure of Dion-Jacobson perovskites governs their photophysics
- 2022Taking a closer look - how the microstructure of Dion-Jacobson perovskites governs their photophysicscitations
- 2021Tunable wettability of polymer films by partial engulfment of nanoparticlescitations
- 2021Tunable wettability of polymer films by partial engulfment of nanoparticlescitations
- 2020Microstructure, precipitate and property evolution in cold-rolled Ti-V high strength low alloy steelcitations
- 2020Microstructure, precipitate and property evolution in cold-rolled Ti-V high strength low alloy steelcitations
- 2020Microstructure, precipitate and property evolution in cold-rolled Ti-V high strength low alloy steelcitations
- 2020Unraveling the Microstructure of Layered Metal Halide Perovskite Filmscitations
- 2020Unraveling the Microstructure of Layered Metal Halide Perovskite Filmscitations
- 2020Stable cesium formamidinium lead halide perovskites: a comparison of photophysics and phase purity in thin films and single crystalscitations
- 2019Stable Cesium Formamidinium Lead Halide Perovskitescitations
- 2019Mechanism of surface passivation of methylammonium lead tribromide single crystals by benzylaminecitations
- 2019Mechanism of surface passivation of methylammonium lead tribromide single crystals by benzylaminecitations
- 2019Enhancing the crystallinity and perfecting the orientation of formamidinium tin iodide for highly efficient Sn-based perovskite solar cellscitations
- 2019The Impact of Stoichiometry on the Photophysical Properties of Ruddlesden-Popper Perovskitescitations
- 2019Stable Cesium Formamidinium Lead Halide Perovskites:A Comparison of Photophysics and Phase Purity in Thin Films and Single Crystalscitations
- 2019Investigation of the Nanoscale Morphology in Industrially Relevant Clearcoats of Waterborne Polymer Colloids by Means of Variable-Angle-Grazing Incidence Small-Angle X-ray Scatteringcitations
- 2018Micropatterned 2D Hybrid Perovskite Thin Films with Enhanced Photoluminescence Lifetimescitations
- 2018Combining Ultrafast Calorimetry and Electron Microscopycitations
- 2018Combining Ultrafast Calorimetry and Electron Microscopy:Reversible Phase Transformations in SeTeAs Alloyscitations
- 2018Shape and structural motifs control of MgTi bimetallic nanoparticles using hydrogen and methane as trace impuritiescitations
- 2017N-Type Organic Thermoelectricscitations
- 2016N-type polymers as electron extraction layers in hybrid perovskite solar cells with improved ambient stabilitycitations
- 2014Synthesis and exceptional thermal stability of Mg-based bimetallic nanoparticles during hydrogenationcitations
- 2013Tuning structural motifs and alloying of bulk immiscible Mo-Cu bimetallic nanoparticles by gas-phase synthesiscitations
- 2010Microstructural features of intergranular brittle fracture and cold cracking in high strength aluminum alloyscitations
- 2006The growth-induced microstructural origin of the optical black state of Mg2NiHx thin filmscitations
- 2006Optical, structural, and electrical properties of Mg2NiH4 thin films in situ grown by activated reactive evaporationcitations
Places of action
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article
Shape and structural motifs control of MgTi bimetallic nanoparticles using hydrogen and methane as trace impurities
Abstract
In this work we report the influence of methane/hydrogen on the nucleation and formation of MgTi bimetallic nanoparticles (NPs) prepared by gas phase synthesis. We show that a diverse variety of structural motifs can be obtained from MgTi alloy, TiCx/Mg/MgO, TiCx/MgO and TiHx/MgO core/shell NPs via synthesis using CH4/H-2 as a trace gas, and with good control of the final NP morphology and size distribution. Moreover, depending on the concentration of Ti and type of employed trace gas, the as prepared MgTi NPs can be tuned from truncated hexagonal pyramid to triangular and hexagonal platelet shapes. The shape of MgTi NPs is identified using detailed analysis from selected area electron diffraction (SAED) patterns and tomography (3D reconstruction based on a tilt series of Bright-Field transmission electron microscopy (TEM) micrographs). We observe the truncated hexagonal pyramid as a shape of MgTi alloy NPs in contrast to Mg NPs that show a hexagonal prismatic shape. Moreover, based on our experimental observations and generic geometrical model analysis, we also prove that the formation of the various structural motifs is based on a sequential growth mechanism instead of phase separation. One of the prime reasons for such mechanism is based on the inadequacy of Mg to nucleate without template in the synthesis condition. In addition, the shape of the TiCx/TiHx core, and the concentration of Mg have strong influence on the shape evolution of TiCx/MgO and TiHx/MgO NPs compared to TiCx/Mg/MgO NPs, where the thermodynamics and growth rates of the Mg crystal planes dominate the final shape. Finally, it is demonstrated that the core shape of TiCx and TiHx is affected by the Mg/Ti target ratio (affecting the composition in the plasma), and the type of the trace gas employed. In the case of CH4 the TiCx core forms a triangular platelet, while in the case of H-2 the TiHx core transforms into a hexagonal platelet. We elucidate the reason for the TiCx/TiHx core shape based on the presence of (i) defects, and (ii) hydrogen ...