球形Ni^(2+)模板交联壳聚糖吸附剂的多胺化及其对Ni^(2+)的吸附性能  

STUDY ON THE SYNTHESIS AND CHARACTERIZATION OF A NOVEL POLYAMINATED AND Ni^(2+) TEMPLATED CROSS-LINKED CHITOSAN BEAD AND ITS ADSORPTION PROPERTY FOR Ni^(2+)

作　　者：唐雪娇[1] 曹梦[1] 毕成良[1] 韩长秀[1] 张宝贵[1] 

机构地区：[1]南开大学环境科学与工程学院,天津300071

出　　处：《离子交换与吸附》2008年第1期47-54,共8页Ion Exchange and Adsorption

基　　金：天津市科技发展计划项目(05YFSYSF030)

摘　　要：多胺化合成球形Ni2+模板交联壳聚糖吸附剂,该吸附剂对重金属镍离子具有更好的吸附能力。试验结果表明,通过模板化、胺化使吸附容量由1.072mmol/g提高到2.746mmol/g。通过不同吸附剂的红外光谱分析、含水率和Ni2+吸附容量的比较,验证了技术路线的正确性。研究了吸附剂对Ni2+的吸附性能,其对Ni2+的吸附具有较好的动力学性能。A polyaminated and Ni^2＋ templated cross-linked chitosan bead （P-C-CTS （Ni）） was novelly prepared by introducing polyethylene polyamine to increase the adsorption sites to Ni^2＋. The P-C-CTS （Ni） with higher adsorption capacity of 2.746mmol/g, 2.6 times as that of the unpolyaminated one, was obtained. The structures of semifinished products were determined by FT-IR and the adsorption capacities to Ni^2＋ were comparatively analyzed, which validated the synthesis of P-C-CTS （Ni） in desirable processes. The appearance of P-C-CTS （Ni） was characterized by SEM and the adsorption property to Ni^2＋ was investigated. It is confirmed that the adsorbent with great adsorption property had good kinetic property for adsorption to Ni^2＋.

关 键 词：壳聚糖吸附剂 Ni^2+模板 胺化 红外 

分 类 号：O636.1[理学—高分子化学]