摘要
目的 :研究香兰醛改性的壳聚糖 ( V-CTS)对金属离子的吸附机理。方法 :测定 V-CTS对金属离子的等温吸附线 ,并用 FT-IR法研究 V-CTS与金属离子形成的配合物的结构特征。结果 :V-CTS对 Cd2 +、Zn2 +的吸附符合 Langmuir及 Fre-undlich公式 ,对 Pb2 +的吸附不符合上述公式。吸附剂分子中多种官能团参与了配位。结论 :V-CTS对 Cd2 +、Zn2 +和 Pb2 +的吸附以化学吸附为主。
Objective:The adsorption mechanism of metal ions on chitosan modified by vanillin(V-CTS)was studied.Method:The adsorption isotherms of metal ions on V-CTS were obtained,and the structures of complexes of V-CTS with metal ions were studied by FT-IR spectroscopy.Result:The adsorption isotherms of Zn 2+ , Cd 2+ on the V-CTS exhibit Langmuir-type and Freundlich-type equation.The adsorption isotherm of Pb 2+ on V-CTS don't exhibit the two equations.Many kinds of functional groups chelate metal ion in those complexes.Conclution:The chemical adsorption is the main adsorption way of metal ion on V-CTS. [
出处
《南通医学院学报》
2000年第1期40-41,共2页
ACTA Academiae Medicinae Nantong
关键词
香兰醛
壳聚糖
FT-IR法
吸附机理
金属离子
vanillin
chitosan
FT-IR spectroscopy
adsorption mechanism
heavy metal ions
