We report on a simple and template-less technique for growing ultra-long cadmium oxide nanowires on an indium tin oxide (ITO) surface from the aqueous solution. The nanowires, free-standing and with various diameters, are realized on the ITO surface by following a simple hydrothermal reaction of cadmium nitrate and hexamethylenetetramine of a similar molar ratio at 120°C. The nanowires have diameters in the range of 10 to 30 nm and lengths of up to a few tens of micrometers. We identified that the concentration of the solution precursors is crucial to the growth density of the nanowires on the surface but less important to the structural growth (length and geometry) of the nanowires. Such nanowires might possess unique properties that can be used for prospective photonics and optoelectronics materials.

我们报告了一种简单且无模板的技术，用于从水溶液中在氧化铟锡 (ITO) 表面上生长超长氧化镉纳米线。通过在 120°C 下通过硝酸镉和具有相似摩尔比的六亚甲基四胺的简单水热反应，在 ITO 表面上实现了独立且具有各种直径的纳米线。纳米线的直径范围为 10 到 30 nm，长度可达几十微米。我们发现溶液前体的浓度对表面纳米线的生长密度至关重要，但对纳米线的结构生长（长度和几何形状）不太重要。这种纳米线可能具有独特的特性，可用于未来的光子学和光电子材料。