Studying the Effects of Temperature on the Nucleation and Growth of Nanoparticles by Liquid-Cell Transmission Electron Microscopy

Temperature control is a recent development that provides an additional degree of freedom to study nanochemistry by liquid cell transmission electron microscopy. In this paper, we describe how to prepare an in situ heating experiment for studying the effect of temperature on the formation of gold na...

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Veröffentlicht in:Journal of visualized experiments Jg. 169; H. 168; S. 465 - 474
Hauptverfasser: Khelfa, Abdelali, Nelayah, Jaysen, Wang, Guillaume, Ricolleau, Christian, Alloyeau, Damien
Format: Journal Article
Sprache:Englisch
Veröffentlicht: United States JoVE 17.02.2021
Schlagworte:
automation
Chemical Sciences
Gold - chemistry
Heating
Image Processing, Computer-Assisted
liquids
Material chemistry
Metal Nanoparticles - chemistry
Metal Nanoparticles - ultrastructure
Microscopy, Electron, Transmission
nanogold
radiolysis
Software
Temperature
transmission electron microscopy
Water - chemistry
ISSN:1940-087X, 1940-087X
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Zusammenfassung:Temperature control is a recent development that provides an additional degree of freedom to study nanochemistry by liquid cell transmission electron microscopy. In this paper, we describe how to prepare an in situ heating experiment for studying the effect of temperature on the formation of gold nanoparticles driven by radiolysis in water. The protocol of the experiment is fairly simple involving a special liquid cell with uniform heating capabilities up to 100 °C, a liquid-cell TEM holder with flow capabilities and an integrated interface for controlling the temperature. We show that the nucleation and growth mechanisms of gold nanoparticles are drastically impacted by the temperature in liquid cell. Using STEM imaging and nanodiffraction, the evolution of the density, size, shape and atomic structure of the growing nanoparticles are revealed in real time. Automated image processing algorithms are exploited to extract useful quantitative data from video sequences, such as the nucleation and growth rates of nanoparticles. This approach provides new inputs for understanding the complex physico-chemical processes at play during the liquid-phase synthesis of nanomaterials.
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ISSN:1940-087X
1940-087X
DOI:10.3791/62225