Quantitative Description of Crystal Nucleation and Growth from <i>in Situ</i> Liquid Scanning Transmission Electron Microscopy
Anton V. Ievlev
Stephen Jesse
Thomas J. Cochell
Raymond R. Unocic
Vladimir A. Protopopescu
Sergei V. Kalinin
10.1021/acsnano.5b03720.s004
https://acs.figshare.com/articles/media/Quantitative_Description_of_Crystal_Nucleation_and_Growth_from_i_in_Situ_i_Liquid_Scanning_Transmission_Electron_Microscopy/2096068
Recent advances in liquid cell (scanning) transmission electron microscopy (S)TEM has enabled <i>in situ</i> 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 K<sub>2</sub>PtCl<sub>6</sub>. 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.
2015-12-22 00:00:00
particles dynamics
understanding nanocrystal formation
approach
Situ Liquid Scanning Transmission Electron MicroscopyRecent advances
transmission electron microscopy
K 2PtCl Averaged
nanocrystal growth mechanisms