Functional islands
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The reporter learned from the Hefei Institute of Materials Research, Chinese Academy of Sciences on September 21 that Wang Xiangke, a researcher at the Institute of Plasma Low Temperature Plasma Applications, and Hu Wenping, a researcher at the Institute of Chemistry of the Chinese Academy of Sciences, successfully prepared a functionalized graphene material with uniform dispersion and The material is sulfonated to achieve effective removal of POPs. Persistent organic pollutants migrate over a long period of time and exist in the environment for a long time, with long-term residual, bioaccumulative, semi-volatile and highly toxic, which are seriously harmful to human health and the environment. Effective removal of POPs has become the pursuit of scientists. After a lot of experimental research, Wang Xiangke's research team found that the sulfonic acid functionalization of the graphene surface can enhance its adsorption capacity. The functionalized graphene has an adsorption capacity of 2.4 mmol/g for naphthalene and naphthol, and is the most adsorbable material among all materials. At present, the preparation cost of the material is relatively high, but with the development of technology, it is expected to achieve low-cost, large-scale preparation. According to reports, the common graphite is formed by stacking a layer of planar carbon atoms arranged in a honeycomb order. The interlayer force of graphite is weak, and it is easy to peel off each other to form a thin graphite sheet. When the graphite sheet is peeled off into a single layer, the single layer having only one carbon atom thickness is graphene.