功能化石墨烯材料对放射性核素吸附及其机理研究

项目名称： 功能化石墨烯材料对放射性核素吸附及其机理研究

项目编号： No.21207136

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： 李家星

作者单位： 中国科学院合肥物质科学研究院

项目金额： 25万元

中文摘要： 石墨烯是一种全新的二维有序碳材料，具有独特的物理化学特性和极高的比表面积，在放射性废水处理中具有潜在的应用前景。本项目拟采用Hummers法制备氧化石墨烯（Graphene Oxide,简称GO）,采用液相沉积法在GO上组装磁性纳米粒子制备磁性GO复合材料（MGO），并对该材料进行分析表征；利用宏观吸附法研究在不同实验条件下（pH，温度，离子强度,吸附时间等）MGO对放射性核素的吸附性能和规律；并与微观结构表征、理论计算模拟相结合，阐明MGO与放射性核素的相互作用机理，揭示MGO吸附性能与其组成的关系。本项目研究结果为探索放射性废水处理提供一种新的材料和方法，具有重要的研究意义。

中文关键词： 核素；石墨烯；功能化；吸附；作用机理

英文摘要： Graphene, a novel kind of carbon materials with a 2D structure, has unique physicochemical properties and extra high surface areas, which indicate that graphene has great potential for usage in the field of nuclear wastewater treatment. In this project, graphene oxide (GO) will be synthesized using the Hummers method and combined with magnetic nanoparticles to form magnetite-graphene oxide composites(MGO), which will be characterized by different analysis techniques. The adsorption capacity and inteaction mechanisms of radionuclides on MGO under different experimental conditions (such as pH, temperature, ionic strength, reaction time, etc.) will be studied by batch adsorption method. The adsorption machenism of radionuclides on MGO and the relationship between the adsorption capacity and the composition of MGO will be investigated by using batch adsorption, microstructure characterization and computational chemistry analysis.The results achieved from this project are very important in the field of nuclear wastewater treatment and will develop a new kind of material and method in radionuclide pollution cleanup in near future.

英文关键词： Nuclides；Graphene；Functionalized；Adsorption；Interaction mechanism