液相共沉积法制备正庚烷基磁性液体,为了研究油酸对纳米粒子的包覆作用,采用红外光谱分别测试Fe3O4纳米粒子、油酸及正庚烷基铁氧体磁性液体.比较其结果得出,油酸通过端羧基与Fe3O4纳米粒子之间的化学反应来实现对其表面包覆,包覆过程没有破坏油酸的非极性链,确保包覆后的油酸具有与非极性载液相容性,此为磁性液体表面活性剂的本质作用.
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