Quantitative Description of Crystal Nucleation and Growth from in Situ Liquid Scanning Transmission Electron Microscopy.
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.
The Institute for Functional Imaging of Materials, Oak Ridge National Laboratory , One Bethel Valley Road, Oak Ridge, Tennessee 37831, United States.|The Center for Nanophase Materials Sciences, Oak Ridge National Laboratory , One Bethel Valley Road, Oak Ridge, Tennessee 37831, United States.
Anton V
AV
Ievlev
The Institute for Functional Imaging of Materials, Oak Ridge National Laboratory , One Bethel Valley Road, Oak Ridge, Tennessee 37831, United States.|The Center for Nanophase Materials Sciences, Oak Ridge National Laboratory , One Bethel Valley Road, Oak Ridge, Tennessee 37831, United States.
Stephen
S
Jesse
Department of Chemical and Materials Engineering, University of Kentucky , Lexington, Kentucky 40506, United States.
Thomas J
TJ
Cochell
The Institute for Functional Imaging of Materials, Oak Ridge National Laboratory , One Bethel Valley Road, Oak Ridge, Tennessee 37831, United States.|The Center for Nanophase Materials Sciences, Oak Ridge National Laboratory , One Bethel Valley Road, Oak Ridge, Tennessee 37831, United States.
Raymond R
RR
Unocic
The Institute for Functional Imaging of Materials, Oak Ridge National Laboratory , One Bethel Valley Road, Oak Ridge, Tennessee 37831, United States.|Computational Sciences & Engineering Division, Oak Ridge National Laboratory , One Bethel Valley Road, Oak Ridge, Tennessee 37831, United States.
Vladimir A
VA
Protopopescu
The Institute for Functional Imaging of Materials, Oak Ridge National Laboratory , One Bethel Valley Road, Oak Ridge, Tennessee 37831, United States.|The Center for Nanophase Materials Sciences, Oak Ridge National Laboratory , One Bethel Valley Road, Oak Ridge, Tennessee 37831, United States.
Sergei V
SV
Kalinin
(scanning) transmission electron microscopy; inverse problem; local kinetics; nucleation and growth; platinum nanoparticles