场发射扫描电镜研究实验条件对片形Fe@Ag复合粒子表面形貌的影响

摘要

利用场发射扫描电子显微镜(FESEM)研究了用液相化学还原银技术制备片形Fe@Ag核壳复合粒子过程中的反应条件(还原剂的种类、表面活性剂的浓度、pH值、反应温度、粉体的装载量)对Fe@Ag复合粒子表面形貌的影响规律.结果表明FESEM在该研究工作实验条件的优化和选择过程中发挥了重要的作用.%The flaky Fe@Ag core-shell composite particles were synthesized by the method of chemical reduction in liquid phase.The effect of reducer type,surfactant concentration,pH value,react temperature and loadage of the carbonyl iron powders on surface topography of the core-shell particles were researched with field emission scanning electron microscope (FESEM).The results showed that FESEM has played a very important role in optimization of experimental conditions.