Immobilized nanoparticles for oxidative and reductive water treatment

纳米零价铁(NZVI)降解污染物的效率和适用性尚未得到充分开发，因为它受到颗粒团聚和向环境排放的影响。一种方法是将NZVI固定在碳基薄膜上，提高了材料的降解效率，减少了应用后纳米颗粒分离的问题。因此，该项目的一个主要目标是(1)生产以碳基材料为载体的NZVI，(2)在与饮用水和环境水样相关的条件下，开展水溶液中氧化和/或还原污染物降解的基础研究，并通过考虑原始化合物的降解和转化产物的出现来评估它们。优化效率的参数包括载体材料、纳米颗粒的制备和固定化方法以及进一步应用电化学过程的可能性。使用坚固的支持材料的另一个重要方面是材料的再生或再利用的可能性，以实现对未来用于污染物降解的材料的最大益处。

The efficiency and applicability of nanoparticulate zero valent iron (NZVI) for contaminant degradation have not been fully exploited since it is affected by particle agglomeration and emission of the particles to the environment. One approach is the immobilization of NZVI on carbon-based membranes which increases the degradation efficiency of the materials and reduces problems involved with nanoparticle separation after application. A major aim of this project is therefore (1) to produce NZVI supported on carbon-based materials, and (2) to perform fundamental studies of oxidative and/or reductive contaminant degradation in aqueous solutions under conditions relevant for drinking water and environmental water samples, and assess them by consideration of the degradation of the original compounds and the occurrence of transformation products. Parameters for the optimization of the efficiency are the support materials, methods of the production and immobilization of nanoparticles, and the possibility to apply further electrochemical processes. A further important aspect of using robust support materials is the possibility of regeneration or reuse of the materials to achieve the maximum benefit for future applications of the materials for contaminant degradation.