均相沉淀法制备氧化镍纳米线  

Preparation of nickel oxide nanowire by homogeneous precipitation method

作　　者：吴莉莉[1] 吕伟[1] 吴佑实[1] 石元昌[1] 魏慧英[1] 胡春霞[1] 

机构地区：[1]山东大学材料科学与工程学院,济南250061

出　　处：《中国有色金属学报》2005年第1期61-65,共5页The Chinese Journal of Nonferrous Metals

摘　　要：以尿素、硫酸镍为原料,用均相沉淀法制备了氧化镍纳米线,并通过X射线衍射(XRD)、透射电镜(TEM)及红外光谱等测试手段对所得产物的组成和形貌进行了研究.TEM结果表明,所得产物为多晶氧化镍纳米线,直径和长度分别为5～15 nm和250～350 nm.通过对前驱体产物在不同温度下煅烧,发现纳米线在600℃分解为颗粒.作为比较,以尿素为沉淀剂,用水热法制得氧化镍纳米粉体,结果得到球形和排列整齐的棒状两种形态.Nickel oxide nanowires were prepared by urea-based homogeneous precipitation process. The structure, morphology and composition of the as precipitated and heat-treated materials were characterized by means of XRD, TEM, and IR spectra analysis. The result of the electron diffraction shows that the NiO nanowires are polycrystalline with 515nm in diameter. The nanowires were broken into particles when calcined at 600℃. For comparison, the hydrothermal method was also used to prepare NiO nanopowders. As a result, assembled nanocrystals and comb-like nanobars were obtained.

关 键 词：氧化镍 纳米线 均相沉淀法 水热法 

分 类 号：O611[理学—无机化学]