Quantitative Description of Crystal Nucleation and Growth from in Situ Liquid Scanning Transmission Electron Microscopy

Anton V. Ievlev; Stephen Jesse; Thomas J. Cochell; Raymond R. Unocic; Vladimir A. Protopopescu; Sergei V. Kalinin

doi:10.1021/acsnano.5b03720

Quantitative Description of Crystal Nucleation and Growth from in Situ Liquid Scanning Transmission Electron Microscopy

Anton V. Ievlev, Stephen Jesse, Thomas J. Cochell, Raymond R. Unocic, Vladimir A. Protopopescu, Sergei V. Kalinin

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Abstract

Recent advances in liquid cell (scanning) transmission electron microscopy (S)TEM has enabled in situ nanoscale investigations of controlled nanocrystal growth mechanisms. Here, we experimentally and quantitatively investigated the nucleation and growth mechanisms of Pt nanostructures from an aqueous solution of K₂PtCl₆. Averaged statistical, network, and local approaches have been used for the data analysis and the description of both collective particles dynamics and local growth features. In particular, interaction between neighboring particles has been revealed and attributed to reduction of the platinum concentration in the vicinity of the particle boundary. The local approach for solving the inverse problem showed that particles dynamics can be simulated by a stationary diffusional model. The obtained results are important for understanding nanocrystal formation and growth processes and for optimization of synthesis conditions.

Original language	English
Pages (from-to)	11784-11791
Number of pages	8
Journal	ACS Nano
Volume	9
Issue number	12
DOIs	https://doi.org/10.1021/acsnano.5b03720
State	Published - Oct 28 2015

Keywords

(scanning) transmission electron microscopy
inverse problem
local kinetics
nucleation and growth
platinum nanoparticles

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10.1021/acsnano.5b03720

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title = "Quantitative Description of Crystal Nucleation and Growth from in Situ Liquid Scanning Transmission Electron Microscopy",

abstract = "Recent advances in liquid cell (scanning) transmission electron microscopy (S)TEM has enabled in situ nanoscale investigations of controlled nanocrystal growth mechanisms. Here, we experimentally and quantitatively investigated the nucleation and growth mechanisms of Pt nanostructures from an aqueous solution of K2PtCl6. Averaged statistical, network, and local approaches have been used for the data analysis and the description of both collective particles dynamics and local growth features. In particular, interaction between neighboring particles has been revealed and attributed to reduction of the platinum concentration in the vicinity of the particle boundary. The local approach for solving the inverse problem showed that particles dynamics can be simulated by a stationary diffusional model. The obtained results are important for understanding nanocrystal formation and growth processes and for optimization of synthesis conditions.",

keywords = "(scanning) transmission electron microscopy, inverse problem, local kinetics, nucleation and growth, platinum nanoparticles",

author = "Ievlev, {Anton V.} and Stephen Jesse and Cochell, {Thomas J.} and Unocic, {Raymond R.} and Protopopescu, {Vladimir A.} and Kalinin, {Sergei V.}",

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T1 - Quantitative Description of Crystal Nucleation and Growth from in Situ Liquid Scanning Transmission Electron Microscopy

AU - Ievlev, Anton V.

AU - Jesse, Stephen

AU - Cochell, Thomas J.

AU - Unocic, Raymond R.

AU - Protopopescu, Vladimir A.

AU - Kalinin, Sergei V.

PY - 2015/10/28

Y1 - 2015/10/28

N2 - Recent advances in liquid cell (scanning) transmission electron microscopy (S)TEM has enabled in situ nanoscale investigations of controlled nanocrystal growth mechanisms. Here, we experimentally and quantitatively investigated the nucleation and growth mechanisms of Pt nanostructures from an aqueous solution of K2PtCl6. Averaged statistical, network, and local approaches have been used for the data analysis and the description of both collective particles dynamics and local growth features. In particular, interaction between neighboring particles has been revealed and attributed to reduction of the platinum concentration in the vicinity of the particle boundary. The local approach for solving the inverse problem showed that particles dynamics can be simulated by a stationary diffusional model. The obtained results are important for understanding nanocrystal formation and growth processes and for optimization of synthesis conditions.

AB - Recent advances in liquid cell (scanning) transmission electron microscopy (S)TEM has enabled in situ nanoscale investigations of controlled nanocrystal growth mechanisms. Here, we experimentally and quantitatively investigated the nucleation and growth mechanisms of Pt nanostructures from an aqueous solution of K2PtCl6. Averaged statistical, network, and local approaches have been used for the data analysis and the description of both collective particles dynamics and local growth features. In particular, interaction between neighboring particles has been revealed and attributed to reduction of the platinum concentration in the vicinity of the particle boundary. The local approach for solving the inverse problem showed that particles dynamics can be simulated by a stationary diffusional model. The obtained results are important for understanding nanocrystal formation and growth processes and for optimization of synthesis conditions.

KW - (scanning) transmission electron microscopy

KW - inverse problem

KW - local kinetics

KW - nucleation and growth

KW - platinum nanoparticles

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Quantitative Description of Crystal Nucleation and Growth from in Situ Liquid Scanning Transmission Electron Microscopy

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Keywords

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