Serbanescu Oana Steluta, Pandele Andreea Madalina, Oprea Madalina, Semenescu Augustin, Thakur Vijay Kumar, Voicu Stefan Ioan
Department of Analytical Chemistry and Environmental Engineering, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, Gheorghe Polizu 1-7, 011061 Bucharest, Romania.
Advanced Polymers Materials Group, University Politehnica of Bucharest, Gheorghe Polizu 1-7, 011061 Bucharest, Romania.
Polymers (Basel). 2021 Nov 17;13(22):3978. doi: 10.3390/polym13223978.
This study presents a new, revolutionary, and easy method of separating Gd (III). For this purpose, a cellulose acetate membrane surface was modified in three steps, as follows: firstly, with aminopropyl triethoxysylene; then with glutaraldehyde; and at the end, by immobilization of crown ethers. The obtained membranes were characterized by Fourier transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS), through which the synthesis of membranes with Gd (III) separation properties is demonstrated. In addition, for the Gd (III) separating process, a gadolinium nitrate solution, with applications of moderator poison in nuclear reactors, was used. The membranes retention performance has been demonstrated by inductively coupled plasma mass spectrometry (ICP-MS), showing a separation efficiency of up to 91%, compared with the initial feed solution.
本研究提出了一种分离钆（III）的全新、革命性且简便的方法。为此，醋酸纤维素膜表面分三步进行改性，具体如下：首先，用氨丙基三乙氧基硅烷处理；接着，用戊二醛处理；最后，通过冠醚固定化处理。所得膜通过傅里叶变换红外光谱（FT-IR）和X射线光电子能谱（XPS）进行表征，由此证明了具有钆（III）分离性能的膜的合成。此外，对于钆（III）的分离过程，使用了一种硝酸钆溶液，该溶液用于核反应堆中的慢化剂毒物。通过电感耦合等离子体质谱（ICP-MS）证明了膜的保留性能，与初始进料溶液相比，分离效率高达91%。
