【摘要】 利用化学沉淀法、均匀沉淀法、乳液法合成了不同晶粒尺寸的纳米ZnS。用X—射线衍射技术和透射电镜研究了材料的晶体结构和陶瓷微结构 ,并用TG—DTA测定了材料的热稳定性 ,探讨了不同实验方法对纳米颗粒晶粒度的影响。结果表明 ,6 10℃以前ZnS能在空气中稳定存在 ,乳液法能得到颗粒细小的ZnS ,且具有生产成本低、产率高等特点更多还原

【Abstract】 Nanometer ZnS with different particle size were prepared by chemical precipitation,precipitation from homogeneous solution and emulsion method respectively.Crystal structure and ceramic microstructure of the powders were studied by XRD and TEM.The thermal stability was measured by TG-DTA.The effects of different methods on the mean grain size were discussed.The results show that the ZnS can exist stably in air below 610 ℃,and ZnS made by emulsion method has smaller grain size,the cost is lower and the yield is higher.更多还原