Crystal Facet‐Dependent Photocatalytic Hydrogen Evolution From Ultra‐Stable Cu‐Zr/Hf Heterobimetallic Metal–Organic Frameworks

) among pristine MOF photocatalysts. The exceptional performance of Cu-BCA-Hf-O can be primarily attributed to its superior photogenerated carrier transfer ability and abundant active sites exposed on the crystal surface. This study provides molecular-level insights into the coordination regulation and morphology control of MOFs for highly efficient photocatalysis, highlighting the promising future of pristine MOF photocatalysts.