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dc.contributor.authorShi, Feng
dc.contributor.authorSun, Junxia
dc.contributor.authorWang, Jingtao
dc.contributor.authorLiu, Min
dc.contributor.authorWang, Shaofei
dc.contributor.authorCao, Xingzhong
dc.contributor.authorYan, Zhikun
dc.contributor.authorLi, Yifan
dc.contributor.authorNunes, Suzana Pereira
dc.identifier.citationShi, F., Sun, J., Wang, J., Liu, M., Wang, S., Cao, X., … Nunes, S. P. (2020). Exploration of the Synergy Between 2D Nanosheets and a Non-2D Filler in Mixed Matrix Membranes for Gas Separation. Frontiers in Chemistry, 8. doi:10.3389/fchem.2020.00058
dc.description.abstractDual-filler MMMs have attracted special interests in recent years because of the possibility of producing synergetic effect. This study is aimed at exploring the underlying synergy between two-dimensional (2D) nanosheets and a non-2D filler in mixed matrix membranes for gas separation. MXene or graphene oxide (GO) as typical nanosheet filler is selected to be in pair with a non-2D filler, SiO2 or halloysite nanotubes (HNTs), with Pebax as the polymer matrix. In this way, four pairs of binary fillers are designed and the corresponding four groups of MMMs are fabricated. By tuning the mass ratio of binary fillers, synergetic effect is found for each group of MMMs. However, the two 2D fillers found different preferential non-2D partners. GO works better with HNTs than SiO2, while MXene prefers SiO2 to HNTs. To be noted, GO/HNTs renders the membranes the maximum enhancement of CO2 permeability (153%) and CO2/N2 selectivity (72%) compared to Pebax control membrane, while each of them as single filler only brought about very limited enhancement of CO2 separation performance. The possible mechanisms are thoroughly discussed in terms of filler dispersion, nanosheet flexibility, and the tortuosity and connectivity of the surface diffusion pathways along nanosheets.
dc.description.sponsorshipAll authors gratefully acknowledge the financial support from China Scholarship Council and King Abdullah University of Science and Technology, the instrument support from Center of Advanced Analysis & Computational Science, Zhengzhou University. The PALS characterization service, provided by XC and his group (Institute of High Energy Physics, Chinese Academy of Sciences), is also acknowledged.
dc.publisherFrontiers Media SA
dc.rightsArchived with thanks to Frontiers in Chemistry
dc.titleExploration of the Synergy Between 2D Nanosheets and a Non-2D Filler in Mixed Matrix Membranes for Gas Separation
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Division
dc.contributor.departmentEnvironmental Science and Engineering Program
dc.contributor.departmentNanostructured Polymeric Membrane Lab
dc.identifier.journalFrontiers in Chemistry
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionDepartment of Chemical Engineering, Zhengzhou University, Zhengzhou, China
dc.contributor.institutionKey Laboratory of Nuclear Radiation and Nuclear Energy Technology, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China
kaust.personWang, Shaofei
kaust.personNunes, Suzana Pereira

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