Self-Adjusting Metal–Organic Framework for Efficient Capture of Trace Xenon and Krypton
Journal Article
·
· Angewandte Chemie (International Edition)
- Soochow University, Suzhou (China)
- Univ. of South Florida, Tampa, FL (United States)
- Univ. of North Texas, Denton, TX (United States)
- North Carolina State University, Raleigh, NC (United States)
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
- King Saud Univ., Riyadh (Saudi Arabia)
The capture of the xenon and krypton from nuclear reprocessing off-gas is essential to the treatment of radioactive waste. Although various porous materials have been employed to capture Xe and Kr, the development of high-performance adsorbents capable of trapping Xe/Kr at very low partial pressure as in the nuclear reprocessing off-gas conditions remains challenging. Herein, we report a self-adjusting metal-organic framework based on multiple weak binding interactions to capture trace Xe and Kr from the nuclear reprocessing off-gas. The self-adjusting behavior of ATC-Cu and its mechanism have been visualized by the in-situ single-crystal X-ray diffraction studies and theoretical calculations. The self-adjusting behavior endows ATC-Cu unprecedented uptake capacities of 2.65 and 0.52 mmol g-1 for Xe and Kr respectively at 0.1 bar and 298 K, as well as the record Xe capture capability from the nuclear reprocessing off-gas. Further, our work not only provides a benchmark Xe adsorbent but proposes a new route to construct smart materials for efficient separations.
- Research Organization:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- National Natural Science Foundation of China (NSFC); National Science Foundation (NSF); National Science Foundation of Jiangsu Province; Robert A. Welch Foundation; USDOE Office of Nuclear Energy (NE)
- Grant/Contract Number:
- AC05-76RL01830
- OSTI ID:
- 2566143
- Report Number(s):
- PNNL-SA--169815
- Journal Information:
- Angewandte Chemie (International Edition), Journal Name: Angewandte Chemie (International Edition) Journal Issue: 11 Vol. 61; ISSN 1433-7851
- Publisher:
- WileyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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