以 Cu(Ⅱ)为模板离子,合成了乙二醇双缩水甘油醚(EGDE)交联的羧甲基壳聚糖材料(EGDE-Cu-CMC)。研究了该材料对模板离子的结合性能与识别选择性,探讨了溶液的 pH 值、吸附时间等因素对吸附性能的影响。结果表明,材料 EGDE-Cu-CMC 对 Cu(Ⅱ)可产生吸附作用,最大吸附量达到33.6 mg·g-1;pH=3.5时,相对于 La(Ⅲ),对 Cu(Ⅱ)的选择性系数可达到26.88。
Using Cu(Ⅱ)as template and ethylene glycol diglycidyl ether as cross-linking agent,the cross-linked carboxymethyl chitosan materials were synthesized.The binding properties and recognition selectivity of the materials towards the template ion were studied,and various adsorption factors were further studied,including initial pH value and adsorption time.The results showed that the EGDE-Cu-CMC towards Cu(Ⅱ)ions can produce strong adsorption,the maximum adsorption capacity reached 33.6 mg·g-1 ;comparing with the La(Ⅲ),selectivity coeffi-cient of Cu(Ⅱ)reached 26.88 when pH=3.5.
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