Shape-Controlled Copper Selenide Nanocubes Synthesized by an Electrochemical Crystallization Method

详细信息    查看全文

• 作者：Rui Yu ; Tong Ren ; Keju Sun ; Zhaochi Feng ; Guanna Li ; Can Li
• 刊名：Journal of Physical Chemistry C
• 出版年：2009
• 出版时间：June 25, 2009
• 年：2009
• 卷：113
• 期：25
• 页码：10833-10837
• 全文大小：371K
• 年卷期：v.113,no.25(June 25, 2009)
• ISSN：1932-7455

文摘

Nanocubes of copper selenide (Cu_2-xSe) have been synthesized through an electrochemical crystallization method using cetyltrimethylammonium bromide (CTAB) as the structure directing agent. The shapes of Cu_2-xSe nanocubes can be controlled by the adsorption effect of CTA⁺ hydrocarbon chain and Br⁻ ion on the facets of the Cu_2-xSe crystals. First-principle quantum chemical calculations indicate that the preferential adsorption of bromide onto the {100} facets of Cu_2-xSe crystals results in the final cubic shape. The ability to generate Cu_2-xSe nanostructures with well-defined morphologies not only provides potential application of Cu_2-xSe nanocubes in photoelectric devices but also provides a great opportunity to systematically study the relationship between their properties and geometric shapes.