含有季铵盐的超高分子量聚乙烯纤维对Au(Ⅲ)的吸附效应  

Adsorption effects of quaternary ammonium-based ultrahigh molecular weight polyethylene fiber on Au(Ⅲ) ions

作　　者：李光珍[1] 高乾宏 胡江涛[2] 李荣[2] 邢哲[2] 吴国忠[2,4] 

机构地区：[1]江西省萍乡市萍乡学院,萍乡337000 [2]中国科学院上海应用物理研究所,嘉定园区上海201800 [3]中国科学院大学,北京100049 [4]上海科技大学物质与技术学院,上海200031

出　　处：《辐射研究与辐射工艺学报》2016年第3期24-30,共7页Journal of Radiation Research and Radiation Processing

基　　金：国家自然科学基金(11275252)资助~~

摘　　要：利用预辐射接枝技术制备含有季铵盐官能团的超高分子量聚乙烯(UHMWPE-g-P(GMA-co-MA)-TETAGTA)纤维。研究该纤维对Au(III)的吸附性能,重点考察了起始溶液的p H值、初始Au(III)离子浓度和温度对吸附容量的影响。实验结果表明,UHMWPE-g-P(GMA-co-MA)-TETA-GTA纤维对Au(III)的吸附速率较快、吸附容量大,180 min内能够达到吸附平衡;在溶液的p H值为3时吸附容量最大(355 mg/g)。该吸附过程符合准二级动力学模型和和Langmuir等温吸附模型,吸附反应是一个熵减少的放热反应。The adsorption behavior of Au（III） ions on the quaternary ammonium-based ultrahigh molecular weight polyethylene fiber（UHMWPE） fibrous adsorbent（UHMWPE-g-P（GMA-co-MA）-TETA-GTA） prepared by pre-irradiation grafting technique was investigated,while influences of initial p H value of the solution,Au（III） ion concentrations and temperature were also concerned.The results showed that the adsorption equilibrium of UHMWPE-g-P（GMA-co-MA）-TETA-GTA fiber for Au（III） adsorption could be reached within 180 min and the adsorption capacity reached maximum（355 mg/g） at p H=3.Adsorption kinetic pattern is in good agreement with the pseudo-second-order model,and the Langmuir isotherm model fits the adsorption equilibrium data well.This adsorption reaction is an exothermic reaction entropy reduction.

关 键 词：Au(Ⅲ) 吸附 季铵盐官能团 超高分子量聚乙烯纤维 

分 类 号：TL13[核科学技术—核能科学]