功能化碳泡沫磁性微球的制备及其对重金属离子的选择性吸附研究

项目名称： 功能化碳泡沫磁性微球的制备及其对重金属离子的选择性吸附研究

项目编号： No.21207099

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 环境化学

项目作者： 刘明贤

作者单位： 同济大学

项目金额： 25万元

中文摘要： 重金属离子造成的环境污染是当前亟待解决的环境问题，功能化碳泡沫磁性微球集功能化、磁性化、微球化和丰富开孔结构于一体，作为吸附剂在重金属离子废水处理中将具有广阔的应用前景。本项目拟通过乳液-水热法制备碳泡沫微球，引入硫、氮等官能团对碳泡沫微球进行功能化，优化碳泡沫微球的吸附与润湿等表面性能。利用羧基功能化官能团与铁、钴、镍离子之间的配位作用实现功能化碳泡沫磁性微球的制备。通过微球表面功能化和磁性化作用机制研究，获得微球的表面特性与其形貌、表面状态和结构参数关联规律，掌握功能化碳泡沫微球的关键制备技术。开展功能化碳泡沫磁性微球对重金属离子的吸附作用及机理、磁分离效果和再生性能研究，探索上述性能与微球结构和特性关系的规律性，建立对重金属离子吸附容量大、选择性高、吸附和分离速度快、可循环使用的功能化碳泡沫磁性微球的制备方法，为功能化碳泡沫磁性微球作为吸附剂去除废水中重金属离子提供有利条件。

中文关键词： 碳泡沫微球；表面功能化；磁功能化；重金属离子；吸附

英文摘要： Environmental pollution caused by heavy metal ions is an urgent environmental problem needed to be properly dealt with. Functionalized magnetic carbon foam microspheres (FMCFMs) integrated with functionalization, magnetization, micro-spheronization and enrich open-cell structure show promising prospect for the removal of heavy metal ions from wastewater. This project aims (1) to synthesize carbon foam microspheres (CFMs) through emulsion-hydrothermal method; (2) to carry out surface functionalization of CFMs by the introduction of sulfur and nitrogen functional groups into the carbon framework for improving their adsorption and wetting properties; (3) to prepare FMCFMs by utilizing the coordination interaction between functional carboxyl groups and iron, cobalt and nickel ions; (4) to obtain the association rule between the surface properties of FMCFMs and the morphology, surface state, and structural parameters of FMCFMs through exploring the surface functionalized mechanism and magnetization mechanism for the formation of FMCFMs and to obtain the key technique for the preparation of FMCFMs; (5) to study the adsorption, adsorption mechanism of heavy metal ions in wastewater by the FMCFMs, the regeneration properties and magnetic separation of the FMCFMs as well as the relationship between above-mentioned parame

英文关键词： Carbon foam microsphere；Surface functionalization；Magnetic functionalization；Heavy metal ion；Adsorption