The research described in this product was performed in part in the Environmental Molecular Sciences Laboratory, a national scientific user facility sponsored by the Department of Energy's Office of Biological and Environmental Research and located at Pacific Northwest National Laboratory. Platinum nanocrystals of about 30-100 nm size were grown on SrTiO3 substrates in different orientations.
Their shapes were investigated using first-principles methods and compared to scanning electron microscope
images. Analysis of the results for several different surface orientations shows epitaxial growths, uniform
size distributions in regular arrays, partial wetting, and several different shapes. In particular, we observe a
bimodal distribution of particle shapes, distinguished by the relative size of the (100) facets. This observation
is explained by the changes in the surface energy caused by the surface reconstruction.
Revised: April 7, 2011 |
Published: October 11, 2007
Citation
Iddir H., V. Komanicky, S. Ogut, H. You, and P. Zapol. 2007.Shape of Platinum Nanoparticles Supported on SrTiO3: Experiment and Theory.Journal of Physical Chemistry C 111, no. 40:14782-14789. doi:10.1021/jp073041r