磁场对氨基和巯基修饰多壁碳纳米管复合材料吸附苯酚的影响

Influence of magnetic field on adsorption of phenol by NH_2-SH-MWCNTs composite

在不同强度的磁场作用下,将所制备的氨基和巯基修饰多壁碳纳米管复合材料(NH_2-SH-MWCNTs)经透射电镜、傅里叶红外光谱和热重等手段分析表征后加入到循环水系统当中对苯酚进行动态吸附。结合循环水氢键数量的变化研究磁场对NH_2-SH-MWCNTs吸附苯酚的影响。结果表明:不加磁场时,NH_2-SH-MWCNTs对苯酚的平衡吸附容量较大。当施加磁场时,由于受到洛伦磁力的影响,NH_2-SH-MWCNTs对苯酚的平衡吸附容量减小,并且磁场强度越强,平衡吸附容量越小;减少氢键数量,吸附速率随之降低,氢键数量越多,吸附速率越快。

Under the influence of different magnetic field strength,the prepared NH2-SH-MWCNTs composites were characterized by transmission electron microscopy,fourier infrared analysis and thermogravimetric analysis,and then added them to the circulating water system to conduct dynamic adsorption of phenol.Combined with the change of hydrogen bond number in circulating water and studied the effect of magnetic field on the adsorption of phenol by NH2-SH-MWCNTs composite.The results showed that,in the presence of magnetic field,due to the impact of Lorents force,the equilibrium adsorption capacity of NH2-SH-MWCNTs decreased with respect to phenol.And the stronger the magnetic field,the smaller the adsorption capacity.When there was no magnetic field intensity,the adsorption capacity reached the maximum.But hydrogen bonds can increase the adsorption rate,and the more the hydrogen bond number,the faster the adsorption rate.When the magnetic field strength was zero,the adsorption rate was the fastest.