氨基硫脲功能化D301树脂的制备及其对AuCl_4^-的吸附与选择性研究  

Preparation of functionalized D301 resin by thiosemicarbazide and its adsorption and selectivity to AuCl_4^-

作　　者：薛小艳 李鹄飞 安富强[1] XUE Xiao-yan;LI Hu-fei;AN Fu-qiang(School of Science,North University of China,Taiyuan 030051,China)

机构地区：[1]中北大学理学院,山西太原030051

出　　处：《应用化工》2018年第9期1821-1825,共5页Applied Chemical Industry

基　　金：国家自然科学基金项目(21676258);科技部国际合作交流项目(2011DFA51980);山西省自然科学基金项目(201601D102021);超重力化工过程山西省重点实验室基金(CZL201501);山西省国际合作交流项目(20150801043);中北大学第14届科技立项项目(20171448)

摘　　要：通过油溶性单体甲基丙烯酸缩水甘油酯(GMA)的环氧键将氨基硫脲(含大量N和S的功能基)引入D301载体,成功制得富含氨基硫脲基团的新型吸附剂TSCD301。采用FTIR对其结构进行表征,研究了TSCD301对AuCl_4^-的吸附与识别选择性能。结果表明,溶液的pH和温度对TSCD301的吸附性能有显著的影响。在298 K,pH=2的条件下,TSCD301对AuCl_4^-的最大吸附容量为631. 2 mg/g,吸附效率可达98. 7%。TSCD301对AuCl_4^-具有良好的识别选择性能,相对于Cu Cl2-4,选择性系数高达411. 6。另外,TSCD301还具有良好的重复使用性能。A novel adsorbent TSCD301 which riches in thiosemicarbazide groups was successfully prepared and the thiosemicarbazide(functional groups with a large amount of N and S)was introduced into the D301 carrier via the epoxy bond of the oil-soluble monomer glycidyl methacrylate(GMA).The structure was characterized by FTIR.The adsorption and recognition selectivity of TSCD301 for AuCl-4 was studied.The results showed that the pH and temperature of the solution have significant influence on the adsorption capacity of TSCD301.At 298 K and pH of 2,the maximum adsorption capacity of TSCD301 for AuCl-4 was 631.2 mg/g and the adsorption efficiency reached 98.7%.TSCD301 has excellent selectivity towards AuCl-4,and the selectivity coefficient was 411.6 relative to CuCl 2-4.In addition,TSCD301 also possesses well reusability.

关 键 词：氨基硫脲 D301树脂 AuCl-4 吸附 选择性 

分 类 号：TQ316.343[化学工程—高聚物工业] O647.33[理学—物理化学]