High Performance of PIM-1/ZIF-8 Composite Membranes for O2/N2 Separation | Zendy

Yuancheng Liu | Zendy; Jianxin Zhang | Zendy; Xiaoyao Tan | Zendy

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High Performance of PIM-1/ZIF-8 Composite Membranes for O₂/N₂ Separation

Author(s) -

Yuancheng Liu,

Jianxin Zhang,

Xiaoyao Tan

Publication year - 2019

Publication title -

acs omega

Language(s) - English

Resource type - Journals

ISSN - 2470-1343

DOI - 10.1021/acsomega.9b02363

Subject(s) - membrane , zeolitic imidazolate framework , imidazolate , fourier transform infrared spectroscopy , materials science , chemical engineering , permeation , gas separation , nanoparticle , composite number , scanning electron microscope , polymer , metal organic framework , nanotechnology , chemistry , organic chemistry , composite material , adsorption , biochemistry , engineering

This work reports the preparation, characterization, and O 2 /N 2 separation properties of composite membranes based on the polymer of intrinsic microporosity (PIM-1) and the zeolitic imidazolate framework (ZIF-8). Especially, the composite membranes were prepared by growing ZIF-8 nanoparticles on one side of the PIM-1 membrane in methanol. Fourier transform infrared spectroscopy and thermo-gravimetric analysis indicated that there is no strong chemical interaction between ZIF-8 nanoparticles and PIM-1 chains. Scanning electron microscopy images showed that ZIF-8 nanoparticles adhere well to the PIM-1 membrane surface. The pure-gas permeation results confirmed that growth of ZIF-8 on the PIM-1 membrane can enhance the performance of O 2 /N 2 separation. Particularly, the O 2 /N 2 separation performance of the PIM-1/ZIF-8-7 composite membrane exceeds the Robeson upper bound line.

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