A Facile Surface-Etching Route to Thin Films of Metal Iodides
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- 作者：Xianluo Hu ; Jimmy C. Yu ; Jingming Gong ; Quan Li
- 刊名：Crystal Growth & Design
- 出版年：2007
- 出版时间：February 2007
- 年：2007
- 卷：7
- 期：2
- 页码：262 - 267
- 全文大小：921K
- 年卷期：v.7,no.2(February 2007)
- ISSN：1528-7505
文摘
A facile surface-etching approach was developed for the synthesis of CuI, PbI2, and AgI thin films. Tetrahedral-shaped CuI crystals were formed on a variety of copper substrates (e.g., grids, flat or porous foils, and macro- or nanowires) via aninterfacial reaction between a copper substrate and iodine in water at room temperature. A possible mechanism was proposed toexplain the growth of tetrahedral-shaped CuI single crystals. The resulting materials were characterized by transmission electronmicroscopy (TEM), powder X-ray diffraction (XRD), scanning electron microscopy (SEM), selected area electron diffraction (SAED),energy-dispersive X-ray (EDX) spectroscopy, Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS). This preparationapproach can also be used to grow PbI2 and AgI nano- and microcrystals with different morphologies on corresponding substrates.