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Effect of temperature on the nucleation and growth of precious metal nanocrystals

Pitto-Barry, Anaïs
; 
Barry, Nicolas P.E.
Publication Date
2019-12
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Keywords
Metal nanocrystals, Nucleation, Osmium, Transmission electron microscopy
Rights
© 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. This is the peer reviewed version of the following article: Pitto-Barry A and Barry NPE (2019) Effect of temperature on the nucleation and growth of precious metal nanocrystals. Angewandte Chemie: International Edition. 58(51): 18482-18486, which has been published in final form at https://doi.org/10.1002/anie.201912219. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
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Yes
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openAccess
Accepted for publication
2019-09
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Abstract
Understanding the effect of physical parameters (e.g., temperature) on crystallisation dynamics is of paramount importance for the synthesis of nanocrystals of well‐defined sizes and geometries. However, imaging nucleation and growth is an experimental challenge owing to the resolution required and the kinetics involved. Here, by using an aberration‐corrected transmission electron microscope, we report the fabrication of precious metal nanocrystals from nuclei and the identification of the dynamics of their nucleation at three different temperatures (20, 50, and 100 °C). A fast, and apparently linear, acceleration of the growth rate is observed against increasing temperature (78.8, 117.7, and 176.5 pm min−1, respectively). This work appears to be the first direct observation of the effect of temperature on the nucleation and growth of metal nanocrystals.
URI
http://hdl.handle.net/10454/17467
Version
Accepted manuscript
Citation
Pitto-Barry A and Barry NPE (2019) Effect of temperature on the nucleation and growth of precious metal nanocrystals. Angewandte Chemie: International Edition. 58(51): 18482-18486.
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Link to Version of Record
https://doi.org/10.1002/anie.201912219
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Article
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