Recently, the Institute of Plasma Physics, Chinese Academy of Sciences, Institute of Plasma Physics, Institute of Plasma Physics, Chinese Academy of Sciences, used the self-assembly method to synthesize a versatile, independent flexible thin film material and applied it to radioactive ions in water. The removal and separation of Sr and Cs, as well as the modification of their surface to obtain a hydrophobic material for the removal of oily substances. The results of this study are published in the Scientific Report (Sci. Rep. 6, 20920, DOI: 10.1038/srep20920 2016).
In recent years, frequent offshore oil spills and nuclear accidents have caused serious pollution to the ecological environment that people are exposed to. It is difficult to eliminate pollutants in a short time. The researchers of this research group used a layer-by-layer self-assembly technique to construct a plastic nanoporous film material using titanate nanobelts and polyethylenimine (PEI) as raw materials, and discovered that the titanate nanoribbon film material was applied to nuclide. Sr and Cs have excellent enrichment and adsorption properties and can be quickly removed in a very short time. The results show that the removal mechanism of Sr2+ and Cs+ mainly depends on the ion exchange reaction of the titanate nanoribbons, and the interlaminar contraction of the (003) crystal plane has proved this view. At the same time, a layer of volatile silicone is coated on the surface of the film to obtain a hydrophobic film (water contact angle > 150.58o), which has excellent selectivity and fast adsorption capacity for oily substances in water, and its adsorption capacity. Up to 23 times its own quality. This research provides new ideas for future wastewater treatment and separation technologies.
The research work has been supported by a number of topics such as the National Major Scientific Research Plan Project and the National Natural Science Foundation.
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