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Investigating the Chemically Controlled Self-Assembly of Radionuclide-Nanomaterial Hybrids

研究放射性核素-纳米材料杂化物的化学控制自组装

基本信息

批准号：
1649500
负责人：
金额：
--
依托单位：
University of Surrey
依托单位国家：
英国
项目类别：
Studentship
财政年份：
2015
资助国家：
英国
起止时间：
2015 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=studentship-1649500
关键词：
Investigating Chemically Controlled Self Assembly

项目摘要

Currently, traditional chromatography columns used for the chemical separation and recovery of radionuclides present in environmental samples and radioactive nuclear waste, face many limitations: sample preparation is time-consuming, selectivity is inadequate, and uptake of target radionuclides is often slow in the presence of chemical interferent species, e.g. heavy metals. Thus, given real-world demands for more efficient and selective chemical separation of target radionuclides, there exists a pertinent need to explore new technologies. In recent decades, nanomaterials have been investigated in a vast range of technological applications on account of their highly attractive intrinsic properties. An additional attractive feature of this class of materials is an extremely high surface area to volume ratio, which introduces nanoscale dimensionality and facilitates the coupling of mutually beneficial materials to the nanomaterial surface such as crown ethers to help form enhanced hybrid materials. Hence, it is in this context that nanomaterials may be considered as ideal scaffolds for the separation, adsorption and recovery of long-lived radionuclides. As a result, the aim of this project is to investigate the viability of novel functionalised hybrid nanomaterials consisting of the extractant agent, crown ethers and the carbon nanomaterial, carbon nanotubes or graphene oxide. A programme of research was proposed to design, synthesise and characterise crown ether-functionalised carbon nanomaterials designed with specific radionuclide loading capabilities. Research into existing nanomaterial systems has shown that such materials are ideal for the adsorption and eventual separation of typical radionuclides present in environmental water and nuclear waste samples. Another research application of consideration is in the area of diagnostics whereby the smart nanomaterials are designed further with different functionalities to meet current demands for enhanced dose control and targeted radiotherapies of Radium-223 for the nuclear medicine sector.

目前，用于化学分离和回收存在于环境样品和放射性核废料中的放射性核素的传统色谱柱面临许多限制：样品制备耗时，选择性不足，并且在存在化学不相容物质（例如重金属）的情况下，目标放射性核素的吸收通常缓慢。因此，考虑到现实世界对目标放射性核素的更有效和更有选择性的化学分离的需求，存在探索新技术的相关需要。近几十年来，纳米材料因其极具吸引力的内在性质而在广泛的技术应用中得到了研究。这类材料的另一个有吸引力的特征是极高的表面积与体积比，这引入了纳米尺度的维度，并促进了互利材料与纳米材料表面的偶联，如冠醚，以帮助形成增强的杂化材料。因此，正是在这种情况下，纳米材料可以被认为是理想的支架分离，吸附和回收长寿命放射性核素。因此，该项目的目的是研究由萃取剂、冠醚和碳纳米材料、碳纳米管或氧化石墨烯组成的新型功能化杂化纳米材料的可行性。提出了一项研究方案，以设计、合成和合成具有特定放射性核素装载能力的冠醚官能化碳纳米材料。对现有纳米材料系统的研究表明，这种材料是吸附和最终分离环境水和核废料样品中典型放射性核素的理想材料。另一个值得考虑的研究应用是在诊断领域，其中智能纳米材料被进一步设计为具有不同的功能，以满足当前核医学部门对增强剂量控制和镭-223靶向放射治疗的需求。