Issue 14, 2014
From the journal:

Chemical Communications

Metal tips on pyramid-shaped PbSe/CdSe/CdS heterostructure nanocrystal photocatalysts: study of Ostwald ripening and core/shell formation†

Whi Dong Kim,a   Sooho Lee,a   Chaewon Pak,a   Ju Young Woo,a   Kangha Lee,a   Fábio Baum,a   Jonghan Wonb  and  Doh C. Lee*a  

* Corresponding authors

a Department of Chemical and Biomolecular Engineering, KAIST Institute for the Nanocentury, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Korea
E-mail: dclee@kaist.edu

b Division of Electron Microscopic Research, Korea Basic Science Institute, Daejeon 305-333, Korea

Abstract

We report ripening of metal particles anchored on pyramid-shaped heterostructure nanocrystals. The ‘intra-particle’ ripening results in a large metal tip at one corner with the other three tips vanishing. Investigation reveals that the ripening and core/shell formation affects photocatalytic activities via the Fermi level change.

Graphical abstract: Metal tips on pyramid-shaped PbSe/CdSe/CdS heterostructure nanocrystal photocatalysts: study of Ostwald ripening and core/shell formation

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Article information

DOI
https://doi.org/10.1039/C3CC48919A
Article type
Communication
Submitted
22 Nov 2013
Accepted
06 Dec 2013
First published
06 Dec 2013
This article is Open Access
Creative Commons BY-NC license

Chem. Commun., 2014,50, 1719-1721

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Metal tips on pyramid-shaped PbSe/CdSe/CdS heterostructure nanocrystal photocatalysts: study of Ostwald ripening and core/shell formation

W. D. Kim, S. Lee, C. Pak, J. Y. Woo, K. Lee, F. Baum, J. Won and D. C. Lee, Chem. Commun., 2014, 50, 1719 DOI: 10.1039/C3CC48919A

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