Journal
ELECTROCHIMICA ACTA
Volume 55, Issue 27, Pages 7934-7938Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2010.03.024
Keywords
Nanocrystal; Lithography; Electrocatalysis; Oxygen-reduction reaction; Density functional theory
Categories
Ask authors/readers for more resources
We present a rigorous approach for the shape design of supported metal nanoparticle catalysts morphologically identical to each other and epitaxially grown on strontium titanate substrates using electron beam lithography We predict the particle shapes using Wulff construction based on density functional theory calculations of surface energies Then according to the theoretical predictions we are able to tweak morphologies of the already produced nanocrystals by changing annealing conditions The ability to design produce and characterize the catalyst nanoparticles allows us to relate microscopic morphologies with macroscopic oxygen-reduction activities in perchloric acid [Komanicky et al J Am Chem Soc 131 (2009)5732] The unexpectedly high oxygen-reduction activities proportional to inactive (1 0 0) facets led us to suggest a model where the reaction intermediates can cross over to neighboring facets in nanoscale proximity (C) 2010 Elsevier Ltd All rights reserved
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available