The　synthesis　of　cyclic　carbonates　from　CO2　and　epoxides　offers　a　remarkable　100％atomic　efficiency.Previous　literature　describes　the　CO2　cycloaddition　mechanism　predominantly　as　an＂epoxide　activation＂pathway[1].This　process　can　be　effectively　facilitated　by　heterogeneous　catalysts　possessing　Lewis　acidity,potentially　optimising　the　capture　and　activation　of　the　epoxide　via　metal-oxygen　coordination.Metal-organic　frameworks(MOFs)have　recently　garnered　attention　as　new　catalysts,credited　to　their　structural　adaptability　and　multifunctional　sites.Ideally,MOFs　with　exposed　metal　sites　function　as　Lewis　acid　sites,thus　enhancing　the　cycloaddition　reaction.Although　numerous　researchers　emphasize　the　pivotal　role　of　epoxide　activation　in　the　CO2　cycloaddition　process,the　challenge　of　activating　inherently　stable　CO2　molecules　often　remains　overshadowed.Effective　CO2　activation　can　potentially　reduce　the　energy　barriers　of　the　reaction,thereby　enhancing　the　overall　efficiency.Most　prior　studies　on　MOFs＇catalytic　activities　for　CO2　cycloaddition　primarily　emphasise　their　Lewis　acidity　sites[2,3],with　scant　attention　to　the　syn-ergistic　effects　between　the　Lewis　acid　and　base　sites.