MoS_(2)@PEI@β-环糊精的制备及对重金属铬的吸附性能研究

Preparation of MoS_(2)@PEI@β-CD and Its Adsorption Properties for Heavy Metal Chromium

采用水合肼预处理剥离Mo S_(2)纳米片,通过戊二醛交联法制备得到聚合物(Mo S_(2)@PEI@β-CD)材料,利用红外光谱(FT-IR)、扫描电镜(SEM)对材料的结构相貌进行表征,并将其用于重金属铬(Cr)的吸附研究。结果表明,随着吸附温度的升高,Mo S_(2)@PEI@β-CD对Cr的吸附量和去除率先降低再升高,45℃达到最高;随着投加量的增加,去除率不断增加,吸附量先增加后降低;投加量在0.001 0 g吸附效果最好,最佳吸附量为2 150 mg/g。

The polymer(MoS_(2)@PEI@β-CD)material was prepared by glutaraldehyde crosslinking by pretreatment of hydrazine hydrate to peel off MoS_(2) nanosheets,and the structural appearance of the material was characterized by infrared spectroscopy(FT-IR)and scanning electron microscopy(SEM),and it was used for the adsorption of heavy metal chromium(Cr).The results show that with the increase of adsorption temperature,the adsorption amount and removal of Cr by MoS_(2)@PEI@β-CD decrease and then increase,reaching the highest at 45℃,and with the increase of the amount of addition,the removal rate is increasing,first and the adsorption amount increased first and then decreased,the adsorption amount is best at 0.0010 g,and the optimal adsorption amount is 2150 mg/g.