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合成端氨基超支聚合物(HBPA)后与“一锅法”合成的氨基修饰磁性纳米微球通过戊二醛交联得到多氨基功能化磁性纳米吸附剂。通过傅里叶红外光谱、XRD光谱和热重分析表明端氨基修饰磁性纳米吸附剂(Fe_3O_4@HBPA)成功制备。探讨了Fe_3O_4@HBPA吸附剂对模拟废水中Cu~(2+)和甲基橙的吸附性能。Fe_3O_4@HBPA对Cu~(2+)和甲基橙的吸附时间为120min,温度30℃,吸附剂用量为10.0mg,pH=5.0时对Cu~(2+)的吸附效果最佳,pH大于5,对甲基橙吸附效果都较佳。Fe_3O_4@HBPA吸附剂对Cu~(2+)和甲基橙吸附速率较快,在10min左右就基本达到吸附平衡,温度对Cu~(2+)和甲基橙的吸附影响不大。结果表明端氨基超支聚合物修饰的磁性纳米吸附剂对Cu~(2+)和甲基橙具有较好的吸附能力。
Synthesis of amino-terminated hyperbranched polymers (HBPA) with the “one-pot” synthesis of amino-modified magnetic nano-microspheres cross-linked by glutaraldehyde to obtain multi-amino functionalized magnetic nano-adsorbent. Fourier transform infrared spectroscopy, X-ray diffraction and thermogravimetric analysis showed that the terminal amino-modified magnetic nanosorbent (Fe 3 O 4 @ HBPA) was successfully prepared. The adsorption properties of Cu_ (2+) and methyl orange in simulated wastewater by Fe_3O_4 @ HBPA adsorbents were discussed. The adsorption time of Cu 2+ and methyl orange for Fe 3+ 4 @ HBPA was 120min, the temperature was 30 ℃, the amount of adsorbent was 10.0mg, the adsorption effect of Cu 2+ was the best when pH = 5.0, 5, methyl orange adsorption effect is better. The adsorption rate of Cu 2+ and methyl orange to Fe 3+ 4 @ HBPA adsorbed faster than 10 min, and the adsorption equilibrium was almost reached in 10 min. The temperature had little effect on the adsorption of Cu 2+ and methyl orange. The results showed that the magnetic nanoparticles modified by amine terminated hyperbranched polymers have good adsorption capacity for Cu 2+ and methyl orange.