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A seed-mediated growth method for vertical array of single-crystalline CuO nanowires on surfaces

机译：种子介导的单晶CuO纳米线在表面垂直排列的生长方法

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摘要

The preparation and characterization of a large-scale vertical array of single-crystalline CuO nanowires on different material surfaces is demonstrated for the first time. The procedure simply involved a room-temperatures liquid-solid growth process of attached CuO nanoseeds on ITO surface in the mixed aqueous solution of Cu(CH3COO)(2) and NH3. By controlling the concentration of the chemical precursors in the growth solution, we can fabricate variable-shape ID structures of CuO, such as nanowires and nanobelts. The FESEM image analysis indicated that these nanowires feature uniform size with tiny structures that have diameters and lengths in the range of 10 and 100 urn, respectively, and tend to form a bundlelike structure at the top end of the wires. The high-resolution transmission electron microscopy (HRTEM) study on individual CuO NWs reveals that the NWs are single-crystalline with growth orientation is [110]. The XRD analysis of the samples revealed that the nanostructures were a high-crystalline CuO without the presence of other phases of the Cu complexes. A possible mechanism that accounts for the growth of these nanostructures using the present techniques was described.
机译：首次演示了在不同材料表面上大规模单晶CuO纳米线垂直排列的制备和表征。该程序仅涉及室温下的Cu（CH3COO）（2）和NH3混合水溶液中附着的CuO纳米种子在ITO表面的液固生长过程。通过控制生长溶液中化学前驱物的浓度，我们可以制造CuO的可变形状ID结构，例如纳米线和纳米带。 FESEM图像分析表明，这些纳米线具有均匀的尺寸和微小的结构，其直径和长度分别在10到100微米范围内，并倾向于在导线的顶端形成束状结构。对单个CuO NW的高分辨率透射电子显微镜（HRTEM）研究表明，NW是单晶的，其生长方向为[110]。样品的X射线衍射分析表明，纳米结构是一种高结晶度的CuO，而没有Cu络合物的其他相。描述了使用本技术解释这些纳米结构生长的可能机理。

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