第 46 卷第 2 期Vol. 46 No. 2
2016 年 4 月Apr 2016

所属栏目:功能材料

聚苯乙烯-L-半胱氨酸树脂的合成及其对Pb2+、Hg2+的吸附研究
钟广明,粟 琴,马程程,杨 艳,徐广宇* (湖南师范大学 化学化工学院,湖南 长沙 410081)
摘 要:氯甲基聚苯乙烯微球与L-半胱氨酸(L-Cys)胺解反应合成聚苯乙烯-L-半胱氨酸树脂,通过红外光谱表征了树脂结构,测定了其树脂的比表面和孔结构等数据,研究了该树脂在不同温度下对Pb2+、Hg2+的吸附等温线,利用热力学函数关系计算出了吸附焓、自由能和熵。结果表明其合成的Cys树脂对水溶液中Pb2+、Hg2+离子有较好的吸附性能。
关键词:聚苯乙烯氯球;L-半胱氨酸;胺解;吸附
中图分类号:Q63  文献标识码:A  文章编号:1009-9212(2015)06-0054-04
Synthesis and Its Adsorption Properties for Pb2+、Hg2+ in Solution on Polystyrene Supported L-cysteine
ZHONG Guang-ming, SU Qin, MA Cheng-cheng, YANG Yan, XU Guang-yu* ( College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China)
Abstract:A novel polystyrene microsphere supported L-Cys was synthesized via the the amination reaction of L-cysteine with chloromethylated polystyrene(CMHCPS). The obtained resin was characterized by Fourier transformation infrared spectra. The surface area and pore structure of the resin were determined. The adsorption isotherms of Pb2+、Hg2+ in solution at different temperatures were studied.Isothermal adsorption enthalpy, Gibbs free energy and entropy were calculated according to thermodynamic equations. The results showed that the polymer microsphere had strong adsorption to Pb2+、Hg2+ in solution.
Key words:chloromethylated polystyrene; L-Cys; amination; adsorption
基金项目: 湖南省发改委科研项目(湘财企指[2015]83号)资助。
作者简介:钟广明(1990-),男,湖南长沙人,硕士研究生,主要从事有机化学研究 (E-mail:gm_zhong@126.com)。
联 系 人: 徐广宇,教授,主要从事有机化学研究(E-mail:gyxu@hunnu.edu.cn)。
收稿日期: 2016-03-1