Strain-Induced Surface Interface Dual Polarization Constructs PML-Cu/Bi12O17Br2High-Density Active Sites for CO2Photoreduction

Strain induces coupling in Bi12O17Br2and Cu porphyrin-based monoatomic layer (PML-Cu), constructing Bi–O bonding interface in PML-Cu/BOB (PBOB).Surface interface dual polarization boosts internal electric field, promoting electron transfer.PML-Cu provides high density of dispersed active Cu sites in PBOB, enhancing CO2photoreduction.