“…Different types of inorganic fillers including ZIFs have been reported in recent reviews [ 22 , 120 , 121 , 122 ]. Typical ZIFs such as ZIF-7, ZIF-8, ZIF-11, ZIF-67, ZIF-71, ZIF-90, ZIF-95, ZIF-301, ZIF 302, etc., have been fabricated as sole ZIF MMMs [ 123 , 124 , 125 , 126 , 127 , 128 , 129 , 130 , 131 , 132 , 133 , 134 , 135 , 136 , 137 , 138 , 139 ] or modified ZIF MMMs [ 95 , 126 , 140 , 141 , 142 , 143 , 144 , 145 , 146 , 147 , 148 , 149 , 150 , 151 , 152 , 153 , 154 , 155 , 156 , 157 , 158 , 159 , 160 ] for different gas separation applications, such as for CO 2 /CH 4 , CO 2 /N 2 , H 2 /CH 4 , C 3 H 6 /C 3 H 8 , etc. For example, Guan et al highlighted recent research progress in ZIF-based MMMS for CO 2 separation [ 118 ].…”