Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/62452
Title: A facile one-pot dealloying strategy to synthesize monolithic asymmetry-patterned nanoporous copper ribbons with tunable microstructure and nanoporosity
Authors: Liu, W
Xin, C
Chen, L
Yan, J
Li, N
Shi, S 
Zhang, S
Issue Date: 2016
Publisher: Royal Society of Chemistry
Source: RSC advances, 2016, v. 6, no. 4, p. 2662-2670 How to cite?
Journal: RSC advances 
Abstract: In the present work, an effective and facile one-pot dealloying strategy has been developed to synthesize monolithic asymmetry-patterned nanoporous copper ribbons (AP-NPCRs) from melt-spun bi-phase Al 32 at% Cu alloy with trace alpha-Al. The microstructure and nanoporosity of these AP-NPCRs were characterized using X-ray diffraction, scanning electron microscopy, energy dispersive X-ray analysis, transmission electron microscopy, high-resolution transmission electron microscopy, and Brunauer-Emmett-Teller measurements. The results show that the cooling rate and dealloying solution have a significant influence on formation, microstructure and nanoporosity of AP-NPCRs. The quenching surface of porous products has regular bimodal channel size distributions regardless of corrosive solution species, while the free surface shows a homogeneous porous network nanostructure in acidic solution and anomalous bimodal nanoporous architecture in alkaline medium. Additionally, the microstructure (surface morphology, ligament/channel sizes and distribution) and nanoporosity of AP-NPCRs can be modulated effectively by simply changing the dealloying solution.
URI: http://hdl.handle.net/10397/62452
EISSN: 2046-2069
DOI: 10.1039/c5ra22978b
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