| 周春于,杨俊玲,于振东.化学通报,2018,81(10):914-918,923. |
| 纳米Fe3O4@壳聚糖材料的制备及吸附性能的研究 |
| Preparation and Adsorption Properties of Nano-Fe3O4@Chitosan |
| 投稿时间：2018-05-15 修订日期：2018-07-09 |
| DOI： |
| 中文关键词: 纳米材料，壳聚糖，吸附动力学，吸附等温线 |
| 英文关键词:nano-material, chitosan,adsorption kinetic,adsorption isotherm |
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| 中文摘要: |
| 以废弃的虾壳为原料制备壳聚糖，以壳聚糖为壳，磁性Fe3O4为核，液体石蜡为分散剂，T-80为乳化剂，戊二醛为交联剂制备了纳米Fe3O4@壳聚糖材料。利用扫描电镜、热重分析仪、红外光谱仪、X射线衍射仪、进行了表征。结果显示，纳米Fe3O4@壳聚糖材料为表面光滑的球形结构。吸附动力学实验研究表明，纳米Fe3O4@壳聚糖材料对Cu2+离子吸附与Pseudo二级动力学符合，以化学吸附为主，平衡吸附容量为17.32mg/g。吸附等温线实验研究表明，吸附符合Freundlic吸附等温线模型，纳米Fe3O4@壳聚糖材料与Cu2+之间的交互作用强烈，最大吸附容量为213.68 mg/g。 |
| 英文摘要: |
| Chitosan was prepared from waste shrimp shell, and then chitosan as shell, magnetic Fe3O4 as core, liquid paraffin as dispersant, T-80 as emulsifier and glutaraldehyde as crosslinking agent were used to prepare nano-Fe3O4@Chitosan. The system was characterized by infrared spectrometer, scanning electron microscope, thermogravimetric analyzer, and X ray diffractometer. The results showed that the surface of nano-Fe3O4@Chitosan were smooth and spherical,.Adsorption kinetic experimental showed that the Cu2+adsorption of nano-Fe3O4@Chitosan corresponds to pseudo-second-order kinetic, which imply a dominant chemical adsorption, The equilibrium adsorption capacity was 17.32mg/g.Adsorption isotherm experimental showed that the adsorption conform to the Freundlic adsorption isotherm model, the strong interaction between nano-Fe3O4@Chitosan and Cu2+,the maximum adsorption capacity was 213.68 mg/g.. |
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