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Open AccessArticle

In Situ Investigation of the Formation Kinematics of Plasma-Generated Silver Nanoparticles

1
Faculty of Engineering and Health, HAWK University of Applied Sciences and Arts, Von-Ossietzky-Str. 99/100, 37085 Göttingen, Germany
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Faculty of Natural and Materials Science, Clausthal University of Technology, Robert-Koch-Straße 42, 38678 Clausthal-Zellerfeld, Germany
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Institute of Inorganic Chemistry, Georg August University of Göttingen, Tammannstraße 4, 37077 Göttingen, Germany
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Department of Neurogenetics, Max Planck Institute of Experimental Medicine, Electron Microscopy Core Unit, Hermann-Rein-Str. 3, 37075 Göttingen, Germany
5
Institute of Electrochemistry, Clausthal University of Technology, Arnold-Sommerfeld-Straße 6, 37678 Clausthal Zellerfeld, Germany
*
Author to whom correspondence should be addressed.
Nanomaterials 2020, 10(3), 555; https://doi.org/10.3390/nano10030555 (registering DOI)
Received: 20 February 2020 / Revised: 9 March 2020 / Accepted: 15 March 2020 / Published: 19 March 2020
In this publication, it is shown how to synthesize silver nanoparticles from silver cations out of aqueous solutions by the use of an atmospheric pressure plasma source. The use of an atmospheric pressure plasma leads to a very fast reduction of silver ions in extensive solvent volumes. In order to investigate the nanoparticle synthesis process, ultraviolet/visible (UV/VIS) absorption spectra were recorded in situ. By using transmission electron microscopy and by the analysis of UV/VIS spectra, the kinetics of silver nanoparticle formation by plasma influence can be seen in more detail. For example, there are two different sections visible in the synthesis during the plasma exposure process. The first section of the synthesis is characterized by a linear formation of small spherical particles of nearly constant size. The second section is predominated by saturation effects. Here, particle faults are increasingly formed, induced by changes in the particle shape and the fusion of those particles. The plasma exposure time, therefore, determines the shape and size distribution of the nanoparticles. View Full-Text
Keywords: silver nanoparticles synthesis; atmospheric pressure plasma; formation kinematic silver nanoparticles synthesis; atmospheric pressure plasma; formation kinematic
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Tasche, D.; Weber, M.; Mrotzek, J.; Gerhard, C.; Wieneke, S.; Möbius, W.; Höfft, O.; Viöl, W. In Situ Investigation of the Formation Kinematics of Plasma-Generated Silver Nanoparticles. Nanomaterials 2020, 10, 555.

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