Mohamud H, Ivanov P, Russell B C, Regan P H, Ward N I
1Department of Chemistry, University of Surrey, Guildford, GU2 7XH UK.
2National Physical Laboratory, Hampton Road, Teddington, TW11 OLW UK.
J Radioanal Nucl Chem. 2018;316(2):839-848. doi: 10.1007/s10967-018-5741-4. Epub 2018 Feb 17.
The effect of competing ions on the sorption behaviour of uranium onto carboxyl-functionalised graphene oxide (COOH-GO) were studied in batch experiments in comparison to graphene oxide (GO) and graphite. The effect of increasing the abundance of select chemical functional groups, such as carboxyl groups, on the selectivity of U sorption was investigated. In the course of the study, COOH-GO demonstrated superior performance as a sorbent material for the selective removal of uranyl ions from aqueous solution with a distribution coefficient of 3.72 ± 0.19 × 10 mL g in comparison to 3.97 ± 0.5 × 10 and 2.68 ± 0.2 × 10 mL g for GO and graphite, respectively.
通过批量实验，研究了竞争离子对铀在羧基功能化氧化石墨烯（COOH-GO）上吸附行为的影响，并与氧化石墨烯（GO）和石墨进行了比较。研究了增加特定化学官能团（如羧基）的丰度对铀吸附选择性的影响。在研究过程中，COOH-GO作为一种吸附剂材料，表现出卓越的性能，能够从水溶液中选择性去除铀酰离子，其分配系数为3.72±0.19×10 mL g，相比之下，GO和石墨的分配系数分别为3.97±0.5×10和2.68±0.2×10 mL g。
