Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/21465
Title: Pore-size tuning and optical performances of nanoporous gold films
Authors: Chen, AY
Shi, SS
Qiu, YD
Xie, XF
Ruan, HH
Gu, JF
Pan, D
Keywords: Dealloying
Nanoporous gold
Optical performance
Pore size
Surface diffusion
Issue Date: 2015
Publisher: Elsevier
Source: Microporous and mesoporous materials, 2015, v. 202, no. C, p. 50-56 How to cite?
Journal: Microporous and Mesoporous Materials 
Abstract: Through pulse electrochemical dealloying (PED) and chemical dealloying (CD), a variety of nanoporous gold (NPG) films of 100 nm thickness with a wide range of pore size (4-140 nm) were prepared. The coarsening mechanism of pore and the effect of residual Ag on optical performances were investigated. The pore size was tuned by controlling the dissolution rate of active Ag atoms and surface diffusion rate of noble Au atoms along the alloy/solution interfaces. The maximum pore size of 140 nm was obtained by surfactant-assisted chemical dealloying (SA-CD) and the minimum pore size of 4 nm was achieved by PED. It is found that the surface diffusivity of gold in PED is about 0.4-2 ¡Ñ 10-20 m2 s-1, four orders of m
URI: http://hdl.handle.net/10397/21465
ISSN: 1387-1811
DOI: 10.1016/j.micromeso.2014.09.048
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