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Issue 18, 2019, Issue in Progress
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Formation mechanism of nanoporous silver during dealloying with ultrasonic irradiation

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Abstract

Nanoporous silver (NPS) with an extreme coarsened 3-dimensional bi-continuous ligament and nanopore structure could be prepared by chemical dealloying with high-intensity ultrasonic irradiation (UI). The formation mechanism of NPS dealloying with UI was different from NPS obtained through free corrosion. It evolved into NPS with a new lump forming-disintegrating mechanism. Ultrasonic irradiation had strong effects on the dealloying process of NPS. The stirring effect produced by ultrasonic vibration could promote the corrosion of Cu and facilitate the diffusion of Ag atoms. Therefore, the coarsening rate of the ligament was increased significantly. Dealloying assisted by UI could generate an extremely coarsened microstructure of which ligament and pore sizes were much larger than those obtained from free corrosion dealloying.

Graphical abstract: Formation mechanism of nanoporous silver during dealloying with ultrasonic irradiation

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Article information


Submitted
07 Mar 2019
Accepted
25 Mar 2019
First published
29 Mar 2019

This article is Open Access

RSC Adv., 2019,9, 9937-9945
Article type
Paper

Formation mechanism of nanoporous silver during dealloying with ultrasonic irradiation

R. Zhang, X. Wang, J. C. Huang, F. Li, Z. Zhang and M. Wu, RSC Adv., 2019, 9, 9937
DOI: 10.1039/C9RA01742A

This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material and it is not used for commercial purposes.

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    [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC.
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    [Original citation] - Published by the PCCP Owner Societies.
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    [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
  • For reproduction of material from all other RSC journals:
    [Original citation] - Published by The Royal Society of Chemistry.

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