Research On The Construction And Performance Of The Fenton System Based On Prussian Blue And Its Derivatives

Water is a unique natural resource on earth.Without water,there can be no life.Water plays a vital role in sustaining the ecology of the earth and the quality of human life.In recent years,water pollution has been regarded as the most worrying problem requiring immediate and practical solutions.Traditional physical and biological methods can only filter impurities,but cannot effectively deal with complex and diverse pollutants in water.Therefore,the development of efficient and energy efficient methods is the key to solve water pollution.As an advanced oxidation technology,the Fenton method is widely concerned because it can degrade pollutants in water efficiently and green.The improvement of Fenton technology and the development of efficient environmental protection Fenton catalyst are the focus of current research.In this paper,a variety of Fenton catalytic systems based on prussian blue and its derivatives have been developed and their performance has been studied in detail.The main contents of the experiment are as follows:?1?Three-dimensional reticular reduced graphene oxider/Prussian blue/polypyrrole?GO/PB/PPy?composite aerogel was prepared by one-step method.rGO/PPy aerogel as a skeleton displayed three-dimensional network structure,which was conducive to the mass transfer and diffusion.The network structure not only increased surface area of materials,but also avoided the agglomeration of PB nanoparticles.The degradation of rhodamine B by the photo Fenton system with rGO/PB/PPy composite aerogel as catalyst and H₂O₂ as oxidant was investigated.rGO/PB/PPy composite aerogel showed high degradation performance.At the same time,rGO/PB/PPy composite aerogel displayed good stability and reusability.?2?The core-shell FeCo alloy encapsulated nitrogen-doped graphitized carbon?FeCo@NGC?nanocomposite was prepared by sacrificial reaction template method.FeCo Prussian blue analogs were calcined at high temperature in nitrogen environment,the metal was melted and aggregated into FeCo alloy,while the CN-base carbonization was nitrogen-doped graphitized carbon?NGC?and covered the FeCo alloy surface,finally forming the FeCo@NGC core shell material.FeCo@NGC composite material was used as catalyst and permonosulfate as oxidant to construct the microwave Fenton system.FeCo@NGC composite microwave Fenton system could degrade organic dyes efficiently and quickly.Due to the protective effect of NGC shell,the loss of metal ions in FeCo@NGC composites was effectively inhibited.