【摘要】 在非离子表面活性剂聚乙二醇(PEG)存在的条件下,利用不同的钴盐分别与草酸进行低热固相化学反应,一步合成了一系列金属配合物草酸钴纳米棒,并采用XRD,TEM,SEM等分析手段对其结构和形貌进行了表征.实验结果表明:在合适的表面活性剂存在下,利用钴盐与草酸的固相反应一步即可得到一维草酸钴纳米棒,钴盐的不同及表面活性剂聚合度的不同均会影响纳米棒的形貌.表面活性剂PEG在草酸钴纳米棒的形成过程中起到类似软模板的作用,并诱导产物纳米晶沿某一方向定向生长从而生成纳米棒.更多还原

【Abstract】 Metal complex cobalt oxalate nanorods were synthesized in one step by low-heating temperature solid-state chemical reactions of cobalt salts and oxalic acid in the presence of a nonionic surfactant, poly- ethylene glycol (PEG). The compositions and morphologies of samples were characterized by XRD, TEM and SEM. These results show that one-dimensional cobalt oxalate nanorods can be obtained in only one-step via the solid-state reactions of cobalt salts and oxalic acid with the assistance of a suitable surfactant. The morphologies of these nanorods were influenced by the different cobalt salts and surfactant with different degree of polymerization. The surfactant PEG plays a soft-template role in the process of rod-formation and induces the nanocrystallites of products to grow in definite direction. It is also expected that the present syn- thetic method can be extended to prepare other functional complex nanomaterials with desired morphologies by means of choosing suitable surfactant to modify the interface of solid-state chemical reaction.更多还原