biostudies-literatureZhang JFundamental Research Funds for the Central UniversitiesSupporting Plan of Scientific and Technological Innovative Talents in DalianScience Fund for Creative Research Groups of the National Natural Science Foundation of ChinaKey Research and Development Projects in Shandong ProvinceNational Natural Science Foundation of Chinathe CNPC Innovation Funds197https://www.ebi.ac.uk/biostudies/studies/S-EPMC12299749biostudies-literatureUnknown15(7)In this work, HNTs@ZIF-67 composites were synthesized using the in situ growth method and incorporated into 6FDA-TFMB to prepare mixed-matrix membranes (MMMs). Scanning electron microscope (SEM) and transmission electron microscope (TEM) proved that the HNTs@ZIF-67 composite not only retained the hollow structure of HNTs, but also formed a continuous ZIF-67 transport layer on the surface of HNTs. The results of gas permeability experiments showed that with the increase in HNTs@ZIF-67 incorporation, the He permeability and He/CH₄ selectivity of MMMs showed a trend of increasing first and then decreasing. When the loading is 5 wt%, the He permeability and He/CH₄ selectivity of MMMs reach 116 Barrer and 305, which are 22.11% and 79.41% higher than the pure 6FDA-TFMB membMembranesConstruction of Transport Channels by HNTs@ZIF-67 Composites in a Mixed-Matrix Membrane for He/CH<sub>4</sub> Separation.PMC12299749221410012023RJ0012021DQ02-08022022CXGC01030322021005No. DUT22LAB603Yi HZhang JDong HHe GJiang XGuo FXiao WfalseConstruction of Transport Channels by HNTs@ZIF-67 Composites in a Mixed-Matrix Membrane for He/CH<sub>4</sub> Separation.In this work, HNTs@ZIF-67 composites were synthesized using the in situ growth method and incorporated into 6FDA-TFMB to prepare mixed-matrix membranes (MMMs). Scanning electron microscope (SEM) and transmission electron microscope (TEM) proved that the HNTs@ZIF-67 composite not only retained the hollow structure of HNTs, but also formed a continuous ZIF-67 transport layer on the surface of HNTs. The results of gas permeability experiments showed that with the increase in HNTs@ZIF-67 incorporation, the He permeability and He/CH₄ selectivity of MMMs showed a trend of increasing first and then decreasing. When the loading is 5 wt%, the He permeability and He/CH₄ selectivity of MMMs reach 116 Barrer and 305, which are 22.11% and 79.41% higher than the pure 6FDA-TFMB memb2025-01-01T00:00:00Z2025 Jun2025-08-28T03:09:05.995Z2025-08-28T03:09:05.995ZS-EPMC122997494071073710.3390/membranes15070197