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Chemically Initiated Liquid-like Behavior and Fabrication of Periodic Wavy Cu/CuAu nanocables with Enhanced Catalytic Property

Abstract

Solid crystalline materials are of long-range-order in their atomic arrangement while liquids are of short-range-order, and the transition between them is usually caused by heat and/or pressure. Herein, we report the finding that chemical process may play a similar role as heat and initiate liquid-like behavior of crystalline nanomaterials at a temperature far below their melting points. When the straight Cu/CuAu crystalline nanocables were dispersed in organic amine at 80 °C in ambient condition, the continuous oxidation of Cu atoms on the surface and diffusion of Cu atoms from the core to the surface would break up the long-range ordered arrangement of atoms and lead to the transformation of anisotropic crystal to isotropic liquid-like status, which resulted in the evolution of the straight morphology of the nanocables into periodic wavy structures by following the Rayleigh instability. It is also demonstrated that the periodic wavy Cu@CuAu nanocables exhibit much better catalytic activity than the straight Cu@CuAu nanocables towards the reduction of p-nitrophenol to p-aminophenol by NaBH4. Our results not only provide a new insight into the transitions between solid crystal and liquid-like status in the nanoscale, but also allow the development of new strategies for the syntheses of functional nanomaterials.

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Publication details

The article was received on 08 Feb 2018, accepted on 09 Apr 2018 and first published on 09 Apr 2018


Article type: Paper
DOI: 10.1039/C8NR01174E
Citation: Nanoscale, 2018, Accepted Manuscript
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    Chemically Initiated Liquid-like Behavior and Fabrication of Periodic Wavy Cu/CuAu nanocables with Enhanced Catalytic Property

    Z. Jiang, Q. Jiang, R. Huang, M. Sun, K. Wang, Q. Kuang, Z. Zhu and Z. Xie, Nanoscale, 2018, Accepted Manuscript , DOI: 10.1039/C8NR01174E

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