Actinide Separation Inspired by Self-Assembled Metal–Polyphenolic Nanocages
The separation of actinides has a vital place in nuclear fuel reprocessing, recovery of radionuclides, and remediation of environmental contamination. Here we propose a new paradigm of nanocluster-based actinide separation, namely, nanoextraction, that can achieve efficient sequestration of uranium...
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| Veröffentlicht in: | Journal of the American Chemical Society 2020-09, Vol.142 (39), p.16538-16545 |
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| creator | Mei, Lei Ren, Peng Wu, Qun-yan Ke, Yu-bin Geng, Jun-shan Liu, Kang Xing, Xue-qing Huang, Zhi-wei Hu, Kong-qiu Liu, Ya-lan Yuan, Li-yong Mo, Guang Wu, Zhong-hua Gibson, John K Chai, Zhi-fang Shi, Wei-qun |
| description | The separation of actinides has a vital place in nuclear fuel reprocessing, recovery of radionuclides, and remediation of environmental contamination. Here we propose a new paradigm of nanocluster-based actinide separation, namely, nanoextraction, that can achieve efficient sequestration of uranium in an unprecedented form of giant coordination nanocages using a cone-shaped macrocyclic pyrogallol[4]arene as the extractant. The U24-based hexameric pyrogallol[4]arene nanocages with distinctive [U2(PG)2] binuclear units (PG = pyrogallol) that rapidly assembled in situ in monophasic solvent were identified by single-crystal X-ray diffraction, MALDI-TOF mass spectrometry, NMR spectroscopy, and small-angle X-ray and neutron scattering. Comprehensive biphasic extraction studies showed that this novel separation strategy has enticing advantages such as fast kinetics, high efficiency, and good selectivity over lanthanides, thereby demonstrating its potential for efficient separation of actinide ions. |
| doi_str_mv | 10.1021/jacs.0c08048 |
| format | Article |
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(LBNL), Berkeley, CA (United States)</creatorcontrib><title>Actinide Separation Inspired by Self-Assembled Metal–Polyphenolic Nanocages</title><title>Journal of the American Chemical Society</title><addtitle>J. Am. Chem. Soc</addtitle><description>The separation of actinides has a vital place in nuclear fuel reprocessing, recovery of radionuclides, and remediation of environmental contamination. Here we propose a new paradigm of nanocluster-based actinide separation, namely, nanoextraction, that can achieve efficient sequestration of uranium in an unprecedented form of giant coordination nanocages using a cone-shaped macrocyclic pyrogallol[4]arene as the extractant. The U24-based hexameric pyrogallol[4]arene nanocages with distinctive [U2(PG)2] binuclear units (PG = pyrogallol) that rapidly assembled in situ in monophasic solvent were identified by single-crystal X-ray diffraction, MALDI-TOF mass spectrometry, NMR spectroscopy, and small-angle X-ray and neutron scattering. 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| source | American Chemical Society Journals |
| subjects | actinides cations extraction INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY ions nanoparticles |
| title | Actinide Separation Inspired by Self-Assembled Metal–Polyphenolic Nanocages |
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