壳聚糖与Cd(Ⅱ),Pb(Ⅱ),Ce(Ⅲ),Zr(Ⅳ)配合物的制备及光谱分析  

Preparation and Spectral Analysis of Coordination Compounds of Chitosan with Ce(Ⅲ),Zr(Ⅳ),Pb(Ⅱ) and Cd(Ⅱ)

作　　者：丁纯梅[1] 岳文瑾[1] 苏云[1] 李国艳[1] 郭利[1] 陈亮[1] 

机构地区：[1]安徽工程科技学院生化工程系,安徽芜湖241000

出　　处：《光谱学与光谱分析》2007年第6期1185-1187,共3页Spectroscopy and Spectral Analysis

基　　金：安徽省教育厅自然科学基金重点项目(2003kj008zd);芜湖市科技三项基金项目(2004whkj12)资助

摘　　要：用壳聚糖(CTS)分别与硝酸亚铈,硝酸锆,硫酸镉和硝酸铅在酸性介质中反应,制备了壳聚糖-Ce(Ⅲ)、壳聚糖-Zr(Ⅳ)、壳聚糖-Cd(Ⅱ)、壳聚糖-Pb(Ⅱ)四种壳聚糖-重金属离子配合物(用通式M-CTS表示)。用红外光谱(IR)、X-ray衍射(XRD)和X射线光电子能谱(XPS)等光谱分析手段对M-CTS进行了结构表征。结果表明:在壳聚糖-Cd(Ⅱ)配合物中的配位原子是壳聚糖—NH2上的N原子,而在壳聚糖-Ce(Ⅲ)、壳聚糖-Zr(Ⅳ)、壳聚糖-Pb(Ⅱ)配合物中不仅壳聚糖—NH2上的N原子参与了配位,同时OH上的O原子也参与了配位。说明不同的重金属离子与壳聚糖之间形成配位键的配位原子是不完全相同的。Coordination compounds of chistosan （CTS） with Ce（ Ⅲ ）, Zr（Ⅳ）, Pb（ Ⅱ ） and Cd（ Ⅱ ） （M-CTS） were prepared, which were synthesized by the reaction of CTS with cerium nitrate, zirconium nitrate, cadmium sulfate, and lead nitrate in acid systems. The coordination compounds were characterized by infrared Spectrum （IR）, X-ray diffraction spectrum （XRD） and X-ray photoelectron spectrum （XPS）. The results showed that the N atom in amidogen of CTS coordinates with Cd in the coordination compounds of Cd-CTS, while in the coordination compounds of Ce-CTS, Zr-CTS and Pb-CTS, the N atom in amidogen and O atom in hydroxyl of CTS participate in the coordination reaction. It is suggested＇that the coordination bonds are different with the change of heavy metal ions.

关 键 词：壳聚糖 金属配合物 光谱分析 

分 类 号：O636.15[理学—高分子化学]