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以ZnSO4·7H2O和NH4HCO3为原料,在适量表面活性剂聚乙二醇-400(PEG-400)的存在下,采用室温固相反应,得两种纳米碳酸盐前躯体:ZnCO3、Zn5(OH)6(CO3)2。分别以这两种碳酸盐为锌源,以氯化钾为助熔剂,在920℃煅烧2.5 h制备得到ZnO晶须,用X射线衍射(XRD)、透射电镜(TEM)及XSZ-D2型倒置生物显微镜对产物进行表征和形貌分析。结果证明:在室温固相反应中,加入KCl助溶剂,纳米ZnO晶须的生长机理为固态纳米颗粒自组装生长过程,得ZnO晶须平均直径为130 nm,长度为3.0~4.5μm。
Using ZnSO4 · 7H2O and NH4HCO3 as raw materials, two kinds of nanocarbonate precursors were obtained at room temperature in the presence of polyethylene glycol-400 (PEG-400) with proper amount of surfactant ZnCO3, Zn5 (OH ) 6 (CO3) 2. ZnO whiskers were prepared using these two kinds of carbonate as the zinc source and potassium chloride as the flux and calcined at 920 ℃ for 2.5 h. The XRD, TEM and XSZ-D2 Inverted biological microscope to characterize the product and morphology analysis. The results show that the growth mechanism of nano-ZnO whiskers is the self-assembly growth of solid nanoparticles by adding KCl cosolvent. The average diameter of ZnO whiskers is 130 nm and the length is 3.0-4.5 μm.