May 13 – 18, 2018
Casino Conference Centre
Europe/Prague timezone

The binding ability of amidoxime ligands with different substituents to uranyl

May 17, 2018, 11:30 AM
Red Hall (Casino Conference Centre)

Red Hall

Casino Conference Centre

Reitenbergerova 4/95, Mariánské Lázně, Czech Republic
Verbal Separation Methods, Speciation SEP 3


Chu-Ting Yang (Institute of Nuclear Physics and Chemistry, CAEP)


The sequestering of uranium from the ocean is an attractive choice for clean energy due to its vast inventory (about 4.5 billion tons). In this regard, the extractant with high binding affinity to uranyl (UO22+) is desired. In the past few decades, amidoxime (AO) has been screened as the most promising candidate, and various absorption materials bearing this ligand or its derivatives have been developed and applied in both mimic seawater and field experiments. To date, sequestering uranium from ocean at the industrial level is still limited. Enhancing the binding capability of the extractant towards uranyl has always been an issue of top-priority.
In this report, we have developed a novel “one-pot” reaction for the synthesis of amidoxime compounds, which can be used for studying the substituent effects systemically. The results from electrospray ionization mass spectrometry (ESI-MS), fiuorescence quenching experiments, and theoretical calculations provide consistent conclusions on the electronic effect of the substituent on AO–UO2 bonding.[1-4]

  1. C.-T. Yang, J. Han, J. Liu, M. Gu, Y. Li, J. Wen, H.-Z. Yu, S. Hu and X. Wang, Org. Biomol. Chem., 2015, 13, 2514
  2. C.-T. Yang, S. Pei, B. Chen, L. Ye, H. Yu and S. Hu, Dalton Trans., 2016, 45, 3120.
  3. Z. Qin, S. Shi, C.-T. Yang, J. Wen, J. Jia, X. Zhang, H. Yu and X. Wang, Dalton Trans., 2016, 45, 16413.
  4. Z. Qin, Y. Ren, S. Shi, C.-T. Yang, J. Yu, S. Wang, J. Jia, X. Zhang, H. Yu and X. Wang, RSC Adv., 2017, 7, 18639

Primary authors

Chu-Ting Yang (Institute of Nuclear Physics and Chemistry, CAEP) Prof. Hai-Zhu Yu Prof. Xiao-Lin Wang (China Academy of Engineering Physics) Dr Zheng Qin (China Academy of Engineering Physics)

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