TY - JOUR
T1 - UiO-66-polyether block amide mixed matrix membranes for CO2 separation
AU - Shen, Jie
AU - Liu, Gongping
AU - Huang, Kang
AU - Li, Qianqian
AU - Guan, Kecheng
AU - Li, Yukai
AU - Jin, Wanqin
N1 - Publisher Copyright:
© 2016 Elsevier B.V.
PY - 2016/9/1
Y1 - 2016/9/1
N2 - Mixed matrix membranes containing metal-organic frameworks have attracted large attention owing to the combined advantages of high separation performance and easy processability. In this work, CO2-philic zirconium metal organic framework UiO-66 and UiO-66-NH2 nanocrystals were synthesized and embedded into polyether block amide (PEBA) polymer membranes for CO2 separation. It can be found that amine-functionalization endowed UiO-66-NH2 nanoparticles with stronger CO2 affinity compared with that of UiO-66. Also, the hydrogen bonding frameworks between UiO-66-NH2 and PEBA were enhanced, leading to improved dispersibility in polymer matrix. Both the UiO-66-PEBA and UiO-66-NH2-PEBA mixed matrix membranes showed much higher CO2 separation performance than that of pure PEBA membrane. Especially, amine functionalization of the porous frameworks provided the so-prepared UiO-66-NH2-PEBA mixed matrix membrane with higher CO2/N2 selectivity and slightly decreased CO2 permeability than those of UiO-66-PEBA membrane. The developed UiO-66-NH2-PEBA mixed matrix membrane (with MOFs loading of 10 wt%) was tested in humid state and showed excellent and stable CO2/N2 separation performance (CO2 permeability of 130 Barrer, CO2/N2 selectivity of 72) surpassing the upper bound of polymer membranes. This type of UiO-66 based mixed matrix membranes featuring with excellent structural stability and significantly improved gas separation performance offer promising potential for CO2 capture.
AB - Mixed matrix membranes containing metal-organic frameworks have attracted large attention owing to the combined advantages of high separation performance and easy processability. In this work, CO2-philic zirconium metal organic framework UiO-66 and UiO-66-NH2 nanocrystals were synthesized and embedded into polyether block amide (PEBA) polymer membranes for CO2 separation. It can be found that amine-functionalization endowed UiO-66-NH2 nanoparticles with stronger CO2 affinity compared with that of UiO-66. Also, the hydrogen bonding frameworks between UiO-66-NH2 and PEBA were enhanced, leading to improved dispersibility in polymer matrix. Both the UiO-66-PEBA and UiO-66-NH2-PEBA mixed matrix membranes showed much higher CO2 separation performance than that of pure PEBA membrane. Especially, amine functionalization of the porous frameworks provided the so-prepared UiO-66-NH2-PEBA mixed matrix membrane with higher CO2/N2 selectivity and slightly decreased CO2 permeability than those of UiO-66-PEBA membrane. The developed UiO-66-NH2-PEBA mixed matrix membrane (with MOFs loading of 10 wt%) was tested in humid state and showed excellent and stable CO2/N2 separation performance (CO2 permeability of 130 Barrer, CO2/N2 selectivity of 72) surpassing the upper bound of polymer membranes. This type of UiO-66 based mixed matrix membranes featuring with excellent structural stability and significantly improved gas separation performance offer promising potential for CO2 capture.
KW - Amine functionalization
KW - Carbon dioxide capture
KW - Mixed matrix membrane
KW - Polyether block amide
KW - UiO-66
UR - http://www.scopus.com/inward/record.url?scp=84969498770&partnerID=8YFLogxK
U2 - 10.1016/j.memsci.2016.04.045
DO - 10.1016/j.memsci.2016.04.045
M3 - 文章
AN - SCOPUS:84969498770
SN - 0376-7388
VL - 513
SP - 155
EP - 165
JO - Journal of Membrane Science
JF - Journal of Membrane Science
ER -