Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 11, Issue 8, Pages 1639-1642Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2009.06.018
Keywords
Galvanic replacement; Ag/Pt nanocubes; Electrocatalysis; Hydrogen evolution reaction
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With the increasing popularity of the galvanic replacement approach towards the development of bimetallic nanocatalysts, special emphasis has been focused on minimizing the use of expensive metal (e.g. Pt), in the finally formed nanomaterials (e.g. Ag/Pt system as a possible catalyst for fuel cells). However, the complete removal of the less active sacrificial template is generally not achieved during galvanic replacement, and its residual presence may significantly impact on the electrocatalytic properties of the final material. Here, we investigate the hydrogen evolution reaction (HER) activity of Ag nanocubes replaced with different amounts of Pt, and demonstrate how the bimetallic composition significantly affects the activity of the alloyed nanomaterial. (C) 2009 Elsevier B.V. All rights reserved.
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