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[2009.06.04]

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Shape-Controlled Copper Selenide Nanocubes Synthesized by an Electrochemical Crystallization Method
Rui Yu, Tong Ren, Keju Sun, Zhaochi Feng, Guanna Li, Can Li*

J. Phys. Chem. C, 2009 in press

Communication. http://dx.doi.org/10.1021/jp9025267 

Abstract£ºNanocubes of copper selenide (Cu2-xSe) have been synthesized through an electrochemical crystallization method using cetyltrimethylammonium bromide (CTAB) as the structure directing agent. The shapes of Cu2-xSe nanocubes can be controlled by the adsorption effect of CTA+ hydrocarbon chain and Br- ion on the facets of the Cu2-xSe crystals. First-principle quantum chemical calculations indicate that the preferential adsorption of bromide onto the {100} facets of Cu2-xSe crystals results in the final cubic shape. The ability to generate Cu2-xSe nanostructures with well-defined morphologies not only provides potential application of Cu2-xSe nanocubes in photoelectric devices but also provides a great opportunity to systematically study the relationship between their properties and geometric shapes.

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Keywords£ºcopper selenide, electrochemistry, crystal growth, electron microscopy, nanostructures

 

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