放射性核素的生产和使用产生了大量放射性废水，对环境造成了极大威胁，也成为制约核工业发展的一大难点。开发安全、高效、使用方便的放射性废水处理材料是当前亟需解决的一个难题。本课题拟利用具有三维网络结构的石墨烯水凝胶（GHG）为基体封装无机纳米颗粒（亚铁氰化物和杂多酸盐）制备出新型的无机纳米颗粒/GHG复合材料，用于放射性废水中137Cs+的吸附与分离研究。拟通过调整氧化石墨烯的尺寸及无机纳米颗粒和GHG之间的比例来控制材料的结构稳定性，采用多种实验手段（XPS、XRD、XAFS等）探究无机纳米颗粒和GHG之间的结合过程与机制，考察无机纳米颗粒/GHG复合材料的耐辐照性能与Cs+吸附性能，揭示复合材料吸附Cs+的机理，并对复合材料137Cs+吸附性能进行热试验验证。该研究成果可为放射性废水处理提供一种经济高效、使用方便极具应用前景的含137Cs+放射性废水处理新材料，为我国的核能事业的发展提供环

The nuclear industry generates numerous effluents containing radionuclides, which bring threat to environment, and become a serious problem constraining the development of the nuclear industry. Seeking treatment materials for radioactive waste water is a hard nut to crack for nuclear industry development. This subject proposes and designs a new composite to treat 137Cs+-containing waste water. The composite consists of graphene hydrogels (GHG) as the matrix, with the inorganic nanoparticles (ferrocyanide and heteropolyoxometallate) as the adsorbing materials. In the project, the structural stability will be controlled through regulating the size of graphene oxide and the ratio between the inorganic nanopartilces and the GHG; several methods, including XPS, XRD, XAFS, etc., will be used to analyze the interaction mechanism between the inorganic particles and the GHG; the resistance of irradiation and the Cs+ adsorption performance of the composite will be studied, and we will also test and proven the 137Cs+ adsorption performance of the composite using the solution containing 137Cs+. This project could provide a new kind of efficient, economical, convenient, and promising adsorption material for 137Cs+-containing waste water, and provide security for the development of nuclear power.