“…H 2 /CO 2 separation performance of Au‐coated double‐layer graphene membranes compared to graphene oxide (GO), [ 9,10 ] PG, [ 8 ] polyimide–PG membrane (PI–PGM), [ 28 ] carbon molecular‐sieve membranes (CMS), [ 34 ] polybenzimidazole–20% polymer of intrinsic microporosity (PBI–PIM), [ 41 ] graphene/nanoporous carbon film/multiwalled carbon nanotubes (graphene/NPC/MWNT) membrane, [ 14 ] graphene/nickel microislands (G/Ni‐600‐150), [ 29 ] graphene on polished anodic aluminum oxide (G/AAO), [ 26 ] metal–organic framework (MOF), [ 40 ] zeolitic imidiazole framework (ZIF), [ 38 ] Mobil‐5 zeolite (MFI‐Z), [ 35 ] silica, [ 39,42,43 ] and γ‐alumina [ 36,37 ] membranes. (Table S2, Supporting Information).…”