Wenn ein Wassertropfen zum schwebenden Nano-Reaktor wird: Einsatz eines Leidenfrost-Tropfens zur Darstellung und Untersuchung von Nanopartikeln
When a drop of water becomes a floating nano reactor: Use of the Leidenfrost droplet for synthesising and studying nanoparticles
Journal article › Transfer
Publication data
| By | Stefan Schwarzer, Timm Wilke, Ramzy Abdelaziz, Mady Elbahri |
| Original language | German |
| Published in | Praxis der Naturwissenschaften - Chemie in der Schule, 64(4) |
| Pages | 23-27 |
| Editor (Publisher) | Aulis |
| ISSN | 1617-5638, 0177-9516 |
| Publication status | Published – 06.2015 |
The special state, which a Leidenfrost droplet of water is in, can be used with little effort for the synthesis of zinc oxide nanoparticles at school. Especially
the temperature profile and the measurable conductivity of such a “droplet-reactor” give insight into the prevailing conditions of the reaction. Ionised water molecules take an active part in the reaction. The dependence on time can be shown via fluorescence. A proposal for a simple measurement of the moistening of a Leidenfrost droplet is supplemented by a worksheet in the online-supplement.
