纳米ZnO·Bi_2O_3·La_2O_3复合粉体的Sol-Gel法制备工艺与表征

Preparation of ZnO·Bi_2O_3·La_2O_3 nano composite powder by Sol-Gel method

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.

The research concerning nano zinc oxide, an optimal semiconductor material, is of important significance. Thus, ZnO. Bi2O3· La2O3 nano composite powder was prepared from Zn （AC）2· 2H2O, La2O3, Bi （NO3 ）3· 5H2O and citric acid dehydrate by Sol-Gel method. The optimum technological conditions were determined, and the ZnO. Bi2O3 -La2O3 nano composite powder was characterized by XRD, TEM and specific surface area test. The results show that after calcined at 600℃ for 2 h, the ZnO-Bi2O3 -La2O3 nano composite powder with the average particle diameter of 54 nm and specific surface area of 120. 77 m^2/g can be obtained under the optimum technological condition. It is found that Sol-Gel method can be successfully used for preparing nano zinc oxide composite powder.