基于氧化石墨烯印迹微球的制备及其对Cu^(2+)的选择性吸附研究

Preparation of ionic imprinted spherical based on GO and its selectivity adsorption toward Cu^(2+)

以硫脲改性后的壳聚糖(TCS)为印迹单体,氧化石墨烯(GO)为载体,铜离子(Cu^(2+))为模板,在环氧氯丙烷为交联作用下,制备出一种具有Cu^(2+)印迹的GO/TCS微球(IM-GO/TCS)。研究结果表明:当吸附剂IM-GO/TCS用量为0.5g/L,pH=6,温度35℃,Cu^(2+)初始浓度为100mg/L,吸附时间为120min条件下,IM-GO/TCS对Cu^(2+)的吸附量达到146.105mg/g,对Cu^(2+)的选择系数达到9.745,相对分离比达到12.558。

The cupric ionic imprinted polymer material（IM-GO/TCS）was prepared by polymerization in emulsion used modified chitosan as the functional monomer,the graphene oxide（GO）as support and Cu2＋ as template ionic.The results exhibited that the optimum adsorption condition was the absorbent dose of 0.5 g/L,the solution pH of 6,Cu2＋ initial concentration of 100 mg/L and the adsorption time of 120 min.Cu2＋ adsorption capacity of IM-GO/TCS was 146.105 mg/g.The selectivity coefficient and relative separation ratio were 9.745 and 12.558 respectively.