Improving the hydrogen selectivity of graphene oxide membranes by reducing non-selective pores with intergrown ZIF-8 crystals

Xuerui Wang; Chenglong Chi; Jifang Tao; Yongwu Peng; Shaoming Ying; Yuhong Qian; Jinqiao Dong; Zhigang Hu; Yuandong Gu; Dan Zhao

doi:10.1039/C6CC02013E

Improving the hydrogen selectivity of graphene oxide membranes by reducing non-selective pores with intergrown ZIF-8 crystals†

Xuerui Wang,^a Chenglong Chi,^a Jifang Tao,^b Yongwu Peng,^a Shaoming Ying,^a Yuhong Qian,^a Jinqiao Dong,^a Zhigang Hu,^a Yuandong Gu^b and Dan Zhao

*^a

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^a Department of Chemical & Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, 117585 Singapore, Singapore
E-mail: chezhao@nus.edu.sg

^b Institute of Microelectronics, A*STAR (Agency for Science, Technology and Research), 11 Science Park Road, 117685 Singapore, Singapore

Abstract

We report the intergrowth of ZIF-8 crystals on ultrathin graphene oxide (GO) membranes, which helps to reduce the non-selective pores of pristine GO membranes leading to gas selectivities as high as 406, 155, and 335 for H₂/CO₂, H₂/N₂, and H₂/CH₄ mixtures, respectively.

Chemical Communications

Improving the hydrogen selectivity of graphene oxide membranes by reducing non-selective pores with intergrown ZIF-8 crystals†

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Improving the hydrogen selectivity of graphene oxide membranes by reducing non-selective pores with intergrown ZIF-8 crystals

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