Acetylcysteine-functionalized microporous conjugated polymers for potential separation of uranium from radioactive effluents

作者：Han, Xiaoli; Xu, Meiyun; Yang, Sen; Qian, Jun; Hua, Daoben^*

来源：Journal of Materials Chemistry A, 2017, 5(10): 5123-5128.

DOI：10.1039/c6ta10824e

• SOLID-PHASE EXTRACTION
• LIQUID-LIQUID-EXTRACTION
• METAL-ORGANIC FRAMEWORKS
• ENVIRONMENTAL WATER
• FISSION-PRODUCTS
• PRECONCENTRATION
• ION
• COPRECIPITATION
• NANOPARTICLES
• LUMINESCENCE

Nuclear energy is one of the major approaches to solve global energy shortage, but the nuclear industry produces a large amount of effluents containing radioactive uranium, which should be removed to meet stringent discharge standards. In this paper, a series of radioresistant microporous conjugated polymers (MCPs) are prepared for the potential separation of uranium from radioactive effluents. In particular, 1,3,5-triethynylbenzene based MCPs are prepared by the Sonogashira-Hagihara reaction and post-functionalized with N-acetylcysteine (NAC) moieties through a thiol-yne click reaction. The NAC-modified MCPs possessing excellent radioresistance and a high surface area of similar to 610 m(2) g(-1) are then investigated for the potential separation of uranium from radioactive effluents. The effects of NAC graft degree, surface area, pH value, sorbent dose, initial concentration, and competing ions on uranium sorption are studied. The modified MCPs demonstrate a rapid and selective uranium separation with a high sorption capacity of similar to 165 mg g(-1), indicating that they could be a type of promising sorbent to effectively extract uranium from radioactive effluents.

• 出版日期2017-3-14
• 单位苏州大学