Related Experiment Video
Updated: May 9, 2026
Microfabrication of Nanoporous Gold Patterns for Cell-material Interaction Studies
Published on: July 15, 2013
"Re-growth etching" to large-sized porous gold nanostructures
Wenzheng Li1, Long Kuai, Lu Chen
1College of Chemistry and Materials Science, The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecular-Based Materials, Anhui Normal University, Wuhu, 241000, PR China.
Abstract:
A new method, named "re-growth etching", which introduces a unique etchant "Au(I)", has been developed to fabricate large-sized porous gold nanostructures. The size of nanostructures and the number of pores can be regulated by the molar ratio of Ag and Au in the precursor. We have evaluated their performance by a model reaction of the reduction of 4-nitrophenol. The catalytic property of porous Au from Ag67.6Au32.4 (Sample 3) is higher than those of other obtained products, which are mainly attributed to its hollows-interior, porous-exterior, and the large amount of Au. The method for the large-sized porous metal nanostructures has been established for the first time and shows the potential of this route to expand the scope of fabricating porous metal nanostructures.
