石墨烯/Fe_3O_4复合物的制备及其对镁离子的吸附

Preparation of GO/Fe_3O_4 Composite and Its Adsorption of Mg^(2+)

先以膨胀石墨为原料,通过改进的Hummers法制备得到氧化石墨烯,再以硫酸亚铁、三氯化铁和制备得到的氧化石墨烯为原料,通过水浴加热的方法制备得到氧化石墨烯/四氧化三铁复合物。最后,以镁离子为吸附对象,研究工艺条件对氧化石墨烯/四氧化三铁复合物吸附率的影响。研究结果表明:吸附时间为6 min、吸附剂用量为10 mg和吸附温度为25℃时,制备得到的复合物对给定条件下的镁离子具有较好的吸附率。

Taking expanded graphite as raw material, graphene oxide was prepared by using Hummers route. Taking ferrous sulfate, ferric chloride and as-prepared graphene oxide as raw materials, CO/Fe3O4 composite was synthesized through the water bath method. The effects of the conditions on the adsorpotion capacity of GO/Fe3O4 composite were studied by using magnesium ions as the adsorbate in aqueous solution. The resuhs showed that when the adsorpotion time was 6 min, the adsorbent dosage was 10 mg and the adsorption temperature was 25℃ , GO/Fe3O4 composite had good adsoqotion efficiency for magnesium ions under given condition .