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以1,4二-氧六环/水混合溶液为溶剂,采用液相还原法制备了一维Cu纳米带。用透射电子显微镜(TEM)和X-射线粉末衍射仪(XRD)对样品的形貌和结构进行了表征,考察了溶剂的组成、反应温度和混合表面活性剂浓度对产物形貌的影响,并初步探讨了一维Cu纳米带的形成机理。结果表明,适宜条件下Cu纳米粒子能选择性地沿着(111)晶面生长,形成具有体心立方结构的一维Cu纳米带。以罗丹明B为探针分子,研究了一维Cu纳米带的表面增强拉曼散射(SERS)活性,结果表明该类型纳米Cu是一种较好的SERS基底。
One-dimensional Cu nanobelts were prepared by liquid-phase reduction method using 1,4-dioxane / water mixed solution as solvent. The morphology and structure of the samples were characterized by transmission electron microscopy (TEM) and X-ray powder diffraction (XRD). The effects of solvent composition, reaction temperature and mixed surfactant concentration on the morphology of the product were investigated. The formation mechanism of one-dimensional Cu nanobelts was discussed preliminarily. The results show that Cu nanoparticles can grow selectively along the (111) crystal plane under appropriate conditions to form a one-dimensional Cu nanobelts with a body-centered cubic structure. The surface-enhanced Raman scattering (SERS) activity of one-dimensional Cu nanoribbons was investigated using rhodamine B as a probe molecule. The results show that this type of Cu nanoparticles is a good SERS substrate.