胺基化改性D301树脂对AuCl_4^-的吸附及识别性能

Adsorption and recognition performance of amino modified D301 resin for AuCl_4^-

以D301树脂为载体,先接枝聚甲基丙烯酸缩水甘油酯再用乙二胺进行改性,制得胺基化改性树脂D301-g-APGMA。对D301-g-APGMA进行了FTIR及XPS表征,并考察了D301-g-APGMA对AuCl_4^-的吸附性能及识别选择性能。研究结果显示,D301-g-APGMA对AuCl_4^-表现出了优良的吸附性能和识别选择能力,在25℃、pH值为2的条件下,静态吸附量可以达到276.74 mg/g;相对于Cu^(2+)与Fe^(3+),选择性系数分别为713,374。此外,D301-g-APGMA具有优良的再生与重复使用性能。

The amino modified D301 resin,D301-g-APGMA,was obtained using D301 resin as the carrier,polyglycidyl methacrylate as functional polymer and ethylenediamine as modifier.D301-g-APGMA were characterized by FT-IR and XPS methods.Its adsorption performance and recognition selectivity performance for AuCl4^-were also investigated.The results showed that D301-g-APGMA exhibited excellent adsorption properties and recognition selectivity for AuCl4^-.!The static adsorption capacity can reach to 276.74mg/g at 25℃and pH of 2.The relative selectivity coefficients relative to Cu^2＋ and Fe^3＋ are 713 and 374,respectively.Additional,D301-g-APGMA possesses excellent reproducibility and reusability.