Formation of hollow nanocrystals through the nanoscale kirkendall effect

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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 ... continued below

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18 pages

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Yin, Yadong; Rioux, Robert M.; Erdonmez, Can K.; Hughes, Steven; Somorjai, Gabor A. & Alivisatos, A. Paul March 11, 2004.

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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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18 pages

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OSTI as DE00835431

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  • Journal Name: Science; Journal Volume: 304; Other Information: Submitted to Science, Volume 304; Journal Publication Date: 04/30/2004

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  • Report No.: LBNL--54995
  • Grant Number: AC03-76SF00098
  • Office of Scientific & Technical Information Report Number: 835431
  • Archival Resource Key: ark:/67531/metadc783157

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  • March 11, 2004

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  • Dec. 3, 2015, 9:30 a.m.

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  • Sept. 21, 2017, 6:04 p.m.

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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/: accessed December 14, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.