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以Ni(NO_3)_2·6H_2O和SnCl_4·5H_2O为原料,采用水热法制备了Ni掺杂SnO_2纳米粉体,并利用X射线衍射(XRD)、扫描电子显微镜(SEM)及能谱仪(EDS)对产物的组织结构和形貌进行了表征,考察了Ni掺杂量对所得纳米粉体的物相、晶粒度和形貌的影响。结果表明:当前驱体中Ni2+与Sn4+摩尔比从1:10提升到3:10时,Ni元素的掺入量逐渐增加,而SnO_2特征峰的半高宽变宽,SnO_2结晶程度降低;粉体中部分Ni2+取代了Sn4+离子的晶格位置,形成了Ni掺杂SnO_2的复合粉体。当前驱体中Ni2+与Sn4+摩尔比为1:5,水热温度为160℃时制备的粉体分散性较好,颗粒大小最均匀,平均尺寸为200nm左右,掺杂量继续提高时粉体团聚现象加剧。
Ni-doped SnO_2 nano-powders were prepared by hydrothermal method using Ni (NO_3) _2 · 6H_2O and SnCl_4 · 5H_2O as raw materials and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive spectrometer ) Were used to characterize the microstructure and morphology of the product. The effects of Ni doping on the phase, grain size and morphology of the obtained nanopowder were investigated. The results show that when the mole ratio of Ni2 + to Sn4 + is increased from 1:10 to 3:10, the content of Ni element increases gradually, while the FWHM of SnO_2 peak broadens and the crystallinity of SnO_2 decreases. Part of the Ni2 + replaces the lattice sites of Sn4 + ions and forms Ni-doped SnO 2 composite powders. When the molar ratio of Ni2 + to Sn4 + is 1: 5, the hydrothermal temperature is 160 ℃, the powder prepared by this method has better dispersion and the most uniform particle size with an average size of about 200 nm. When the doping amount continues to increase, the powder agglomeration The phenomenon intensified.