The black product was dissolved in hexane . Centrifugation (6000 rpm, 10 min) was applied to remove any undispersed residue. The product, Fe3O4 nanoparticles,was then precipitated with ethanol, centrifuged to remove the solvent, and redispersed into hexane。
到底是溶解dissolved 还是分散于redispersed 己烷呢？求大虾指点，感激ING
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