Method for preparing water-soluble superparamagnetic Fe3O4 hollow spheres

The invention discloses a method for preparing water-soluble superparamagnetic Fe3O4 hollow spheres, belongs to the field of nano functional materials and solves the problem of poor water solubility caused during preparation of Fe3O4 hollow spheres with a solvothermal method. A small amount of lauryl sodium sulfate is added on the basis of an existing solvothermal method for synthesis of Fe3O4, so that the prepared Fe3O4 hollow spheres have very good water solubility; the method is simple to operate and low in cost and facilitates large-scale production; the synthesized Fe3O4 hollow spheres show superparamagnetism, and accordingly, the value of the water-soluble superparamagnetic Fe3O4 hollow spheres in the aspect of biological application is also increased. 本发明公开了种水溶性超顺磁性四氧化三铁空心球的制备方法。本发明属于纳米功能材料领域，本发明解决了溶剂热法制备FeO空心球导致的水溶性差的问题，本发明在现有的溶剂热合成四氧化三铁方法的基础上通过加入少量的十二烷基硫酸钠，使制备出的FeO空心球具有了很好的水溶性，该方法操作方法简单，成本低，利于大规模生产，又由于合成出的FeO空心球表现出超顺磁性，因此其在生物应用方面的价值也得到了提高。