Regulating photocatalysis by external-stimuli manipulation of the microenvironment in europium–organic frameworks

Eu-MOF-T can transform into Eu-MOF-S under solvents. Eu-MOF-S can convert into Eu-MOF-T upon temperature. Eu-MOF-S demonstrates a superior photocatalytic CO 2 RR capacity of 7886.1 μmol g −1 h −1 , Eu-MOF-T is only 599.7 μmol g −1 h −1 .