功能化介孔二氧化硅的制备及其吸附分离水中铀的研究进展.

Uranium is an efficient and clean fuel for nuclear energy， but it inevitably produces uranium containing wastewater in the nuclear industry. If it is not treated in time and leaked into the environment， it will pose a threat to the health of animals， plants and human beings. Therefore， the separation process of U (Ⅵ) in aqueous solution is urgent based on the perspective of energy recovery and environmental protection. Adsorption techniques have especially attracted attentions because of their advantages on feasibility， efficiency and simple operation. As an ideal adsorbent， functionalized mesoporous silica material has the advantages of large specific surface area， high pore capacity and adsorption capacity. It has a wide range of applications in the field of adsorption and separation for uranium. In this paper， the characterization and adsorption mechanism of U (Ⅵ) adsorption in aqueous solutions at home and abroad are reviewed on the basis of functionalized mesoporous silica preparation methods， combined with X-ray photoelectron spectroscopy， Fourier transform infrared spectroscopy， X-ray absorption fine structure spectroscopy， X-ray energy spectrum analysis and Raman spectroscopy. Although there have been encouraging and potential developments in functionalized mesoporous silica adsorbed uranium， the design and mass production of novel multifunctional adsorbents for applications in actual environments remain challenging. [ABSTRACT FROM AUTHOR]