Well-Ordered Nanoporous Copper Fabricated by Dealloying Cu-Mn and its Characterizations

Abstract:

A nanoporous copper (NPC) sample with well-ordered porosity of 20 nm was fabricated by an electrochemical dealloying single-phase Cu0.4Mn0.6 with an external potential of-0.5 V (MSE). The electrochemical mechanism of the dealloying process on the Cu-Mn surface was studied by a liner sweep voltammetry experiment, and an optimized applied voltage for the Cu-Mn system was recommended. The properties of the monolithic NPC, including morphology, chemical composition, surface area and wettability were systematically characterized. The specific surface area around 11.86 m2/g of the as-dealloyed NPC was measured by BET-nitrogen method. The micro/nanoscale bi-continuous 3D porous structures of NPC not only increase the surface area, but also improve the wettability of NPC surface since the increase in surface roughness.

• Periodical: Key Engineering Materials (Volume 693)
• Pages: 662-668
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.693.662
• Online since: May 2016
• Authors: Biao Tang*, Min Zhou, Rui Zhou, Peng Fei Bai, Guo Fu Zhou
• Keywords: Electrochemical Dealloying, Morphology, Nanoporous Copper, Surface Area, Wettability

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