【摘要】 采用微波加热在乙二醇的碱性溶液中用硼氢化钠还原醋酸钴制备了金属Co纳米微粒,并用不同的表面活性剂对Co纳米微粒的表面进行修饰,得到六方晶型的金属Co纳米晶。采用透射电子显微镜和激光光散射仪观测纳米Co粒子的形貌、粒径及分布,确认金属Co纳米晶为直径约20 nm、长度约100 nm的棒状。在正己烷中基本无团聚,呈现单分散,形态均一,粒径分布窄。采用XPS考察产物的表面价态,证明金属Co纳米晶是以零价态存在的。更多还原

【Abstract】 Co nanorods with hexagonal structure were prepared by means of the reduction method with the aid of microwave.Different surfactants were used to modify the surfaces of the Co nanorods.The radius and the length of the Co nanorods were about 20 nm and 100 nm respectively observed by transmission electron(microscopy) and laser light scattering.The Co nanorods showed narrow size distribution and no agglomeration in hexane.The surface-valence of the cobalt nanorods was(determined) to be zero by XPS.更多还原