Nanoporous Graphene Membranes for Efficient 3He/4He Separation
Nanoporous Graphene Membranes for Efficient 3He/4He Separation
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DOI：
10.1021/jz201504k
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发表时间：
2012-01-19
影响因子：
5.7
通讯作者：
Schwerdtfeger, Peter
中科院分区：
文献类型：
--
作者：
Hauser, Andreas W.;Schwerdtfeger, Peter
在纳米级环孔中含有氮原子的纳米多孔功能化石墨烯膜具有通过孔的量子隧穿有效分离He-3和He-4的能力。对单个石墨烯孔的尺寸减小的模型系统的计算表明，隧道势垒高度和低气体温度的平衡选择提高了选择性，并使氦气流量保持在工业可利用的水平。
Nanoporous functionalized graphene membranes containing nitrogen atoms in a nanosized ring pore have the capability to separate He-3 from He-4 efficiently by quantum tunneling through the pore. Calculations on size-reduced model systems of single-graphene pores reveal that a balanced choice of tunneling barrier height and low gas temperature boosts the selectivity and keeps the helium gas flux at an industrially exploitable level.