Nano Archive

Surface-modified CuO layer in size-stabilized single-phase Cu2O nanoparticles

Balamurugan, B. and Mehta, B. R. and Shivaprasad, S. M. (2001) Surface-modified CuO layer in size-stabilized single-phase Cu2O nanoparticles. Applied Physics Letters, 79 . p. 3176. ISSN 00036951

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Abstract

Activated reactive evaporation has been used to grow copper oxide nanoparticles in the size range of 8–100 nm. X-ray diffraction spectra clearly show the presence of a single Cu2O phase. Detailed x-ray photoelectron spectroscopy studies show an increase in the ionicity of the Cu2O system with decreasing particle size. Depth profiling and finger printing of x-ray photoelectron spectra reveal that the Cu2O nanoparticles are capped with a CuO surface layer of thickness [approximate]1.6 nm. This study strongly suggests that the stabilization of the cubic Cu2O nanophase is enhanced by the formation of a CuO surface layer.

Item Type:Article
Subjects:Physical Science > Nanophysics
Physical Science > Nano objects
Material Science > Nanochemistry
Material Science > Nanostructured materials
Divisions:Faculty of Engineering, Science and Mathematics > School of Physics
Faculty of Engineering, Science and Mathematics > School of Chemistry
ID Code:5085
Deposited By:JNCASR
Deposited On:27 May 2009 10:14
Last Modified:27 May 2009 10:14

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