Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 10, Issue 5, Pages 810-813Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2008.03.003
Keywords
gold; nanoporous films; disproportion; glucose; formic acid
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A novel one-step method has been developed for the fabrication of a three-dimensional (3D) nanoporous gold film (NPGF). The NPGF can be facilely made within 1 min from a pure gold substrate by applying a step potential just into the initial transition region of gold in an HCl medium. The pore formation and structural evolution have been revealed by scanning electron microscope, and the processes involve electrodissolution, disproportion, and deposition. The as-prepared 3D NPGF electrode has a large surface area and exhibits high catalytic activity in the electrooxidation of glucose. The NPGF electrode also shows excellent performance toward the electrooxidation of formic acid after being decorated with a tiny amount of Pt by electrodeposition. (C) 2008 Elsevier B.V. All rights reserved.
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