Transformation of mesoporous Cu/Cu2O into porous Cu2O nanowires in ethanol

Yu Ren, Zhen Ma, Peter G. Bruce

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10 Citations (Scopus)

Abstract

Here we report the transformation of ordered mesoporous Cu/Cu2O into porous Cu2O nanowires in ethanol. This transformation may be initiated by the oxidation of metallic Cu in the intergrowth Cu/Cu2O mesostructure by O-2 dissolved in ethanol, and the formed Cu2O nanoparticles then self-assemble into 1D nanowires. The Cu2O nanowires were characterized by powder X-ray diffraction (XRD), transmission electron microscopy (TEM), N-2 adsorption-desorption, and UV-Vis spectroscopy. The nanowires have a diameter of 50-100 nm and a length of 5-10 mu m, and they are made up of ca. 4.0 nm Cu2O nanoparticles. The band gap of the Cu2O nanowires is 2.80 eV, with a strong blue shift from the bulk phase of 2.2 eV. Finally, the catalytic performance of porous Cu2O nanowires and bulk Cu2O in the conversion of N2O was compared.

Original languageEnglish
Pages (from-to)2617-2620
Number of pages4
JournalCrystEngComm
Volume14
Issue number8
DOIs
Publication statusPublished - 2012

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  • Nanoionics: Nanoionics

    Bruce, FRS, P.

    EPSRC

    1/10/0931/01/14

    Project: Standard

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