中文摘要：

利用金属NP印迹法，通过交联和胺化反应自制Ni^2＋印迹改性壳聚糖吸附剂小球（P—C-CTS（Ni）），通过比较中间产品的含水率、吸附容量及FT-IR谱，分析壳聚糖在改性过程中的反应机理，验证吸附剂P—C—CTS（Ni）合成路线的正确性，并证明交联前对壳聚糖分子中的活性氨基进行保护的必要性。低浓度Ni^2＋（CNi=0．852mmol·L^-1）条件，考察不同酸度下吸附容量的变化和酸度对水中低浓度Ni^2＋去除率的影响规律。结果表明，酸度对P—C—CTS（Ni）去除重金属Ni〉效率的影响显著，酸度对Ni〉去除率的影响规律与对吸附容量的影响基本一致，并对吸附机理进行深入分析。P—C-CTS（Ni）在经过“吸附-脱附-再生”8次循环，颜色与外观等基本不变，重复使用性能稳定。

英文摘要：

P-C-CTS （Ni） was prepared by combination polyamination and cross-linked reactions with metal-ion imprinting technology. The reaction mechanism ofmodification was analyzed and the synthesis ofP-C-CTS （Ni） in desirable processes was validated by comparation ofmoisture content and the adsorption capacities of Ni^2＋ and FTIR spetra of semifinished products. It was suggested that protecting the active amide groups of chitosan before cross-linked reaction was very necessary. At low concentration of Ni^2＋ （CNi = 0.852 mmol. L^1）, the effects of pH on the adsorption capacities of Ni^2＋ and removal rate of Ni^2＋ were investigated. The rules of the effects ofpH on the adsorption capacities were in accordance with the effects on the removal rate of Ni^2＋. The adsorption mechanism was discussed. After 8 cycles of＂adsorption-desorption-regeneration＂, the color and appearance of P-C-CTS（Ni） did not change and the reusability was stable.