碳基二氧化钛材料对磷酸三丁酯的光降解研究  

CS/TiO_(2) composite for photocatalytic degradation of tributyl phosphate

作　　者：连一仁 白雪园 陈鑫 段涛[2] 胡国贞[3] 胡佐文[3] LIAN Yi-ren;BAI Xue-yuan;CHEN Xin;DUAN Tao;HU Guo-zhen;HU Zuo-wen(China Institute for Radiation Protection,Taiyuan 030000,China;Southwest University of Science and Technology,Mianyang 621900,China;CAEP Institute of Technology,Mianyang 621900,China)

机构地区：[1]中国辐射防护研究院,山西太原030000 [2]西南科技大学,四川绵阳621900 [3]中国工程物理研究院工学院,四川绵阳621900

出　　处：《应用化工》2019年第S01期184-187,共4页Applied Chemical Industry

摘　　要：磷酸三丁酯作为一种高效的萃取溶剂广泛应用于乏燃料后处理PUREX工艺,然而在后处理恶劣的环境中,放射性物质的强辐照以及硝酸的强氧化性下,磷酸三丁酯遭到破坏和分解,导致其萃取和反萃取性能削弱,直至废弃,成为新的废物,这时就需要对它们进行最终的处理。光催化法是一种处理含有机废液绿色环保的方法,文中制备了一种由二氧化钛纳米颗粒包覆碳球的复合材料,增强了对磷酸三丁酯的光催化效果。实验表明该材料能够在紫外光下降解水溶液中的磷酸三丁酯。Tributyl phosphate(TBP) as an extractant is widely used in spent fuel reprocessing.However,with the strong irradiation of radioactive materials and the strong oxidation of nitric acid,tributyl phosphate can be destroyed and decomposed,leading to the weakening of its extraction and reverse extraction performance.It would be abandoned and become a new kind of waste,which required the final treatment.The photocatalytic technology is an environmental method for the degradation of organics.The composite(CS/TiO_(2)) which is a carbon sphere coated with titanium dioxide nanoparticles was prepared as the photocatalysis.It was because that the superior TBP adsorption performance of CS/TiO_(2) is beneficial to the enhancement of photocatalytic activity.The degradation experiment indicated that CS/TiO_(2) showed good performance on photocatalytic degradation of tributyl phosphate in aqueous solution under ultraviolet light.

关 键 词：磷酸三丁酯 光催化 二氧化钛 乏燃料后处理 

分 类 号：Q69[生物学—生物物理学]