Formation of Nanoporous Gold by Chemical Dealloying of an AlAu Intermetallic Compound

Abstract:

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Here, we report the synthesis of nanoporous gold (NPG) with a uniform structure by chemical dealloying of an AlAu intermetallic compound under free corrosion conditions. The length scales of ligaments/channels in NPG can be tuned by changing the dealloying solution. We verify that Cl- can accelerate the surface diffusion of Au atoms and induce the coarsening of ligaments/channels in NPG. In addition, a metastable intermediate Al2Au5 phase appears during the dealloying of AlAu.

Info:

Periodical:

Advanced Materials Research (Volumes 236-238)

Edited by:

Zhong Cao, Yinghe He, Lixian Sun and Xueqiang Cao

Pages:

2092-2096

DOI:

10.4028/www.scientific.net/AMR.236-238.2092

Citation:

J. K. Lin and Z. H. Zhang, "Formation of Nanoporous Gold by Chemical Dealloying of an AlAu Intermetallic Compound", Advanced Materials Research, Vols. 236-238, pp. 2092-2096, 2011

Online since:

May 2011

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$35.00

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