Journal
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume 19, Issue 32, Pages 21522-21526Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7cp03422a
Keywords
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Funding
- National Natural Science Foundation of China [21433006, 11504204, 11505105]
- 111 Project [B13029]
- Fundamental Research Funds of Shandong University [2015HW012]
- Technological Development Program in Shandong Province Education Department [J14LJ03]
- National Supercomputing Centre in Jinan
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Helium-3 is a precious noble gas, which is essential in many advanced technologies such as cryogenics, isotope labeling and nuclear weapons. The current imbalance of He-3 demand and supply shortage leads to the search for an efficient membrane with high performance for He-3 separation. In this study, based on first-principles calculations, we demonstrated that highly efficient 3He harvesting can be achieved in a nanoporous graphenylene membrane with industrially-acceptable selectivity and permeance. The quantum tunneling effect leads to He-3 harvesting with high efficiency via kinetic sieving. Both the quantum tunneling effect and zero-point energy (ZPE) determine the He-3/He-4 separation via thermally-driven equilibrium sieving, where the ZPE effect dominates efficient He-3/He-4 separation between two reservoirs. The quantum effects revealed in this work suggest that the nanoporous graphenylene membrane is promising for efficient 3He harvesting that can be exploited for industrial applications.
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