SCIENCE CHINA Materials, Volume 62 , Issue 9 : 1315-1322(2019) https://doi.org/10.1007/s40843-019-9427-5

A water-stable fcu-MOF material with exposed amino groups for the multi-functional separation of small molecules

More info
  • ReceivedFeb 25, 2019
  • AcceptedApr 2, 2019
  • PublishedApr 28, 2019


Funded by

the National Natural Science Foundation of China(U1609219,51632008,61721005,51432001,51772268)

and Zhejiang Provincial Natural Science Foundation(LD18E020001)


This work was supported by the National Natural Science Foundation of China (U1609219, 51632008, 61721005, 51432001 and 51772268), and Zhejiang Provincial Natural Science Foundation (LD18E020001).

Interest statement

The authors declare that they have no conflict of interest.

Contributions statement

Jiang K designed and performed the experiments, analyzed the data, and wrote the paper; Zhang L conceived the experiments and contributed to gas sorption measurements; Xia T synthesized the MOF Eu-BDC-NH2; Yang Y and Li B analyzed the data; Cui Y and Qian G conceived the framework of this paper and revised the paper. All authors contributed to the general discussion.

Author information

Ke Jiang was born in Shandong, China. He received his double BSc degree at Hainan University and Tianjin University. He is now a PhD student in Prof. Guodong Qian’s laboratory at the School of Materials Science and Engineering, Zhejiang University. His current research focuses on the design and synthesis of metal-organic framework for biomedical application and gas separation.

Yuanjing Cui was born in Jiangsu, China. He received his BSc and PhD degrees in materials science and engineering from Zhejiang University in 1998 and 2006, respectively. Currently, he is a full professor in the School of Materials Science and Engineering at Zhejiang University. His research interest focuses on organic-inorganic hybrid photonic materials.

Guodong Qian was born in Zhejiang, China. He received his bachelor’s (1988) and master’s (1992) degrees in materials science from Zhejiang University in China. He joined the Materials Department of Zhejiang University after obtaining his PhD degree from Zhejiang University in 1997. He was promoted to associate professor, full professor and Cheung Kong professor in 1999, 2002 and 2011, respectively. His current research interests include hybrid organic-inorganic photonic functional materials and multifunctional porous materials.


Supplementary information

Chemical stability data, thermo stability data and the performance comparison data with other MOF materials are available in the online version of the paper.


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  • Figure 1

    The optical microscopy image (a) and FE-SEM image of compound 1 (b), displaying the homogeneous polyhedral morphology with a particle size of around 50 µm.

  • Figure 2

    X-ray single crystal structure of compound 1 indicating that, (a) the 12-connected Eu6O4(OH)4(CO2)12 molecular building block (MBB) and the 2-connected linker (2-aminoterephthalic acid); (b) the bigger octahedral cage constructed from 6 MBBs and 12 ligands with a diameter of around 7.8 Å, while the smaller tetrahedral cage constructed from 4 MBBs and 6 ligands with a diameter of around 4.0 Å, and the 3D framework is viewed from a, b or c axes (C, white; O, red; Eu, cambridge blue; N, purple; H, green).

  • Figure 3

    N2 sorption isotherms and pore size distribution of compound 1 at 77 K. Closed symbols, adsorption; open symbols, desorption.

  • Figure 4

    Single-component adsorption isotherms of compound 1 for C2-hydrocarbons and CH4 at 273 (a) and 298 K (b); single-component adsorption isotherms of compound 1 for CO2 and N2 at 273 (c) and 298 K (d).

  • Figure 5

    IAST calculations of compound 1 for C2/CH4 selectivity at 273 (a) and 298 K (b); IAST calculations of compound 1 for CO2/N2 selectivity (c); the isosteric heats of gases in compound 1 (d); comparison of reported MOF materials for C2H2/CH4 selectivity (e); comparison of reported MOF materials for CO2 uptake and CO2/N2 selectivity (f).

  • Table 1   Important physical parameters of the selected gas adsorbates


    Kinetic diameter (Å)

    Polarizability (1025 cm−3)



















  • Table 2   The gas sorption, selectivity and of compound








    Uptake capacity at 273 K and 1.0 bar (cm3 cm−3)







    Uptake capacity at 298 K and 1.0 bar (cm3 cm−3)







    Si/CH4 or Si/N2 at 273 K







    Si/CH4 or Si/N2 at 298 K







    Qst (kJ mmol−1)








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