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纳米ZnO作为应用前景意义很大的半导体材料,有较高的研究价值,为此以Zn(AC)2.2H2O、La2O3、Bi(NO3)3.5H2O为主要原料,柠檬酸为络合剂,利用溶胶-凝胶法制备了纳米ZnO.Bi2O3.La2O3复合粉体.通过实验研究制备纳米ZnO.Bi2O3.La2O3复合粉体的最佳工艺条件,并利用x-射线衍射(XRD)、透射电镜(TEM)、比表面积测定对制备的复合粉体性能进行表征.结果表明,在最佳工艺条件下,干凝胶在600℃条件下煅烧2 h,得到了粒径分布约为54 nm、比表面积为120.77 m2/g的纳米ZnO.Bi2O3.La2O3复合粉体,说明溶胶-凝胶法制备纳米ZnO有较好的结果.
As a promising semiconductor material, nano-ZnO has high research value. For this reason, Zn (AC) 2.2H2O, La2O3 and Bi (NO3) 3.5H2O are the main raw materials and citric acid is a complexing agent. Nanometer ZnO.Bi2O3.La2O3 composite powders were prepared by gel method.The optimum technological conditions for the preparation of nanometer ZnO.Bi2O3.La2O3 composite powders were experimentally studied and characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) , The specific surface area of the composite powders were characterized.The results show that under the optimum conditions, the xerogel calcined at 600 ℃ for 2 h, the particle size distribution of about 54 nm, the specific surface area of 120.77 m2 / g nano-ZnO.Bi2O3.La2O3 composite powders, indicating that the sol-gel method for the preparation of ZnO has better results.