Platinum-based nanocages with subnanometer-thick walls and well-defined, controllable facets

Author:

Zhang Lei12,Roling Luke T.3,Wang Xue12,Vara Madeline4,Chi Miaofang5,Liu Jingyue6,Choi Sang-Il1,Park Jinho4,Herron Jeffrey A.3,Xie Zhaoxiong2,Mavrikakis Manos3,Xia Younan147

Affiliation:

1. Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA 30332, USA.

2. State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, and Department of Chemistry, Xiamen University, Xiamen, Fujian 361005, P. R. China.

3. Department of Chemical and Biological Engineering, University of Wisconsin–Madison, Madison, WI 53706, USA.

4. School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332, USA.

5. Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA.

6. Department of Physics, Arizona State University, Tempe, AZ 85287, USA.

7. School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA.

Abstract

Etching platinum nanocage catalysts Although platinum is an excellent catalyst for the oxygen reduction reaction that occurs in fuel cells, its scarcity continues to drive efforts to improve its utilization. Zhang et al. made nanocages of platinum by coating palladium nanocrystals with only a few layers of platinum and then etching away the palladium core (see the Perspective by Strasser). Platinum nanocages made using nanoscale octahedra and cubes of palladium displayed different catalytic activity for the oxygen reduction reaction. Science , this issue p. 412 ; see also p. 379

Funder

U.S. Department of Energy

Basic Energy Sciences

Georgia Institute of Technology

Office of Chemical Sciences

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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