Fe_3O_4@PDA@MIL-101(Cr)的制备及其对四环素的吸附研究

Preparation of Fe_3O_4@PDA@MIL-101(Cr) and Its Adsorption to Tetracycline

为测定Fe_3O_4@PDA@MIL-101(Cr)对废水中四环素的吸附能力,本实验使用盐酸多巴胺、无水乙酸钠、三氯化铁、乙二醇等试剂采用水热法制备Fe_3O_4@PDA@MIL-101(Cr)。并测定其对四环素的吸附性能,实验结果表明,吸附的最佳条件为振荡时间12 min,材料投放量5 mg,四环素溶液浓度20 mg/L,p H值为6。最大饱和吸附量为20.89 mg/g。实验结果表明,Fe_3O_4@PDA@MIL-101(Cr)对四环素的吸附能力令人满意。

In order to determine the adsorption capacity of Fe3O4@PDA@MIL-101（Cr） to tetracycline, in this experiment Fe3O4@PDA@MIL-101（Cr） was prepared by hydrothermal method using dopamine hydrochloride, anhydrous sodium acetate, ferric chloride, ethylene glycol and other reagents. The optimum adsorption conditions were determined as follows： the adsorption time 12 min, the Fe3O4@PDA@MIL-101（Cr） amount 5 mg, the tetracycline concentration 20 mg/L, and the pH value 6. Under above conditions, the maximum saturated adsorption capacity was 20.892 mg/g. So the adsorption capacity of Fe3O4@PDA@MIL-101（Cr） to tetracycline was satisfactory.