Formation of hollow nanocrystals through the nanoscale kirkendall effect Page: 1 of 18
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Formation of Hollow Nanocrystals through the Nanoscale
Yadong Yin, Robert M. Rioux, Can K. Erdonmez, Steven Hughes, Gabor A.
Somorjai, A. Paul Alivisatos*
Department of Chemistry, University of California at Berkeley, and Materials Science Division,
Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.
*To whom correspondence should be addressed. Email: firstname.lastname@example.org
We demonstrate that hollow nanocrystals can be synthesized through a mechanism analogous to
the Kirkendall Effect, in which pores form due to the difference in diffusion rates between two
components in a diffusion couple. Cobalt nanocrystals are chosen as a primary example to show
that their reaction in solution with oxygen, sulfur or selenium leads to the formation of hollow
nanocrystals of the resulting oxide and chalcogenides. This process provides a general route to
the synthesis of hollow nanostructures of large numbers of compounds. A simple extension of
this process yields platinum-cobalt oxide yolk-shell nanostructures which may serve as nanoscale
reactors in catalytic applications.
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Yin, Yadong; Rioux, Robert M.; Erdonmez, Can K.; Hughes, Steven; Somorjai, Gabor A. & Alivisatos, A. Paul. Formation of hollow nanocrystals through the nanoscale kirkendall effect, article, March 11, 2004; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc783157/m1/1/: accessed November 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.