Synthesis of Bimetallic Pt/Sn-based Nanoparticles in Ionic Liquids
| Autor: | Georgios Uzunidis, Christine Dietrich, Yannick Träutlein, Silke Behrens |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
synthesis General Chemical Engineering Nucleation Nanoparticle Context (language use) 02 engineering and technology 010402 general chemistry 01 natural sciences General Biochemistry Genetics and Molecular Biology Catalysis ionic liquids chemistry.chemical_compound Issue 138 Spectroscopy Bimetallic strip Bimetallic nanoparticles Platinum cinnamic aldehyde unsaturated aldehydes General Immunology and Microbiology General Neuroscience Spectrometry X-Ray Emission 021001 nanoscience & nanotechnology 0104 chemical sciences Chemistry selective hydrogenation chemistry Chemical engineering Tin Inductively coupled plasma atomic emission spectroscopy Ionic liquid Nanoparticles 0210 nano-technology |
| Zdroj: | Journal of Visualized Experiments : JoVE |
| ISSN: | 1940-087X |
| DOI: | 10.3791/58058-v |
| Popis: | We demonstrate a method for the synthesis of bimetallic nanoparticles consisting of Pt and Sn. A synthesis strategy is used in which the particular physico-chemical properties of ionic liquids (ILs) are exploited to control both nucleation and growth processes. The nanoparticles form colloidal sols of very high colloidal stability in the IL, which is particularly interesting in view of their use as quasi-homogeneous catalysts. Procedures for both nanoparticle extraction in conventional solvents and for nanoparticle precipitation are presented. The size, structure and composition of the synthesized nanocrystals are confirmed using inductively coupled plasma atomic emission spectroscopy (ICP-AES), X-ray diffraction analysis (XRD) and transmission electron microscopy (TEM) with energy-dispersive X-ray spectroscopy (EDX). By this, we show that the nanocrystals are random-type alloy and of small (2-3 nm) size. The catalytic activity and selectivity in the hydrogenation of α,β-unsaturated aldehydes is tested in a semi-continuous batch-type reactor. In this context, the bimetallic Pt/Sn-based nanoparticles reveal a high selectivity towards the unsaturated alcohol. |
| Databáze: | OpenAIRE |
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