Issue 8, 2012

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

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 O2 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), N2 adsorption-desorption, and UV-Vis spectroscopy. The nanowires have a diameter of 50–100 nm and a length of 5–10 μm, 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.

Graphical abstract: Transformation of mesoporous Cu/Cu2O into porous Cu2O nanowires in ethanol

Supplementary files

Article information

Article type
Communication
Submitted
10 Jan 2012
Accepted
08 Feb 2012
First published
09 Feb 2012

CrystEngComm, 2012,14, 2617-2620

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

Y. Ren, Z. Ma and P. G. Bruce, CrystEngComm, 2012, 14, 2617 DOI: 10.1039/C2CE25045D

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