Bakhiia Tamuna, Toropov Andrey, Nevolin Iurii, Maslakov Konstantin, Romanchuk Anna, Kalmykov Stepan
Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory, Moscow, 119991, Russia.
Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, 31 Bldg 4, Leninsky Prosp., Moscow, 119071, Russia.
Phys Chem Chem Phys. 2024 Oct 17;26(40):25977-25985. doi: 10.1039/d4cp02731k.
This study investigates various sorbents for the effective sorption of dissolved organic substances, using tributyl phosphate (TBP) as a model compound. TBP is one of the most commonly used extractants in the nuclear industry. Four different carbon materials with high specific surface areas (2000-3000 m g) were selected for evaluation. The sorption of TBP from nitric acid solutions was examined over a wide range of concentrations. The samples with the largest specific surface areas showed the highest sorption capacity for organic matter. To enable repeated use, a purification scheme was developed to restore the sorbents' original properties. The samples were subjected to various treatments, analyzed using X-ray photoelectron spectroscopy, and used in subsequent sorption experiments.
本研究以磷酸三丁酯（TBP）作为模型化合物，研究了用于有效吸附溶解有机物质的各种吸附剂。TBP是核工业中最常用的萃取剂之一。选择了四种具有高比表面积（2000 - 3000 m²/g）的不同碳材料进行评估。在很宽的浓度范围内考察了TBP从硝酸溶液中的吸附情况。比表面积最大的样品对有机物的吸附容量最高。为了能够重复使用，制定了一种纯化方案以恢复吸附剂的原始性能。对样品进行了各种处理，使用X射线光电子能谱进行分析，并用于后续的吸附实验。
