• 文献标题:   Improved permeability and selectivity in porous graphene for hydrogen purification
  • 文献类型:   Article
  • 作  者:   HUANG CX, WU HP, DENG KM, TANG WH, KAN EJ
  • 作者关键词:  
  • 出版物名称:   PHYSICAL CHEMISTRY CHEMICAL PHYSICS
  • ISSN:   1463-9076 EI 1463-9084
  • 通讯作者地址:   Nanjing Univ Sci Technol
  • 被引频次:   24
  • DOI:   10.1039/c4cp04385e
  • 出版年:   2014

▎ 摘  要

Porous graphene is a promising material for the realization of low-cost, large-area and lightweight gas separation. However, molecular-sieving membranes based on porous materials reported thus far generally cannot fulfill the requirements of both high permeability and high selectivity. Simultaneously meeting the goals of high permeability and high selectivity remains a great challenge. As we demonstrate here, with the development of an inter-layer-connected porous graphene bilayer, both the permeability and selectivity are significantly improved, and a high criterion of selectivity for H-2 over CH4 (10(24) at room temperature) as well as a high flux of H-2 (2.4 X 10(5) Gas Permeance Unit) has been reached. Our studies highlight a new approach towards the final goal of high-permeability and high-selectivity molecular-sieving membranes using simple structural engineering.