以木质素磺酸钠(LS)、丙烯酰胺(AM)、马来酸酐(MAH)为原料,膨润土(Ben)为无机添加剂,过硫酸钾(KPS)为引发剂,N,N'亚甲基双丙烯酰胺(NMBA)为交联剂,通过溶液自由基接枝共聚法制备了膨润土/木质素磺酸钠接枝丙烯酰胺-马来酸酐(Ben/LS-g-AM-co-MAH)选择性吸附树脂.采用元素分析(EA)、比表面积和孔径分析(BET)、FTIR、核磁共振碳谱(13C NMR)、XRD、SEM-EDS及XPS对所得吸附树脂的组成与结构进行了表征.结果表明:Ben/LS-g-AM-co-MAH的结构中含有大量的酰胺基和羧基基团,其在二元Pb2+/Cu2+溶液中对Pb2+具有较高的吸附量以及良好的吸附选择性.
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