Enhancing CO<sub>2</sub> Electrocatalysis on 2D Porphyrin‐Based Metal–Organic Framework Nanosheets Coupled with Visible‐Light
Yue Zhou, Lirong Zheng, Deren Yang, Haozhou Yang, Qichen Lu, Qinghua Zhang, Lin Gu, Xun Wang
Abstract
Abstract 2D catalysts combined with single atom sites are promising candidates to promote CO 2 reduction performance, but the ability to target stable materials with distinct structure still remains challenging. Herein, a series of single metal atoms anchored 2D metal–organic framework nanosheets (MOF‐NS‐M) with visualized and well‐ordered mesoporous structures are fabricated and exhibit enhanced CO 2 reduction activity and selectivity with the assistance of visible‐light. Encouragingly, the CO Faradaic efficiency of MOF‐NS‐Co exceeds 90% in a wide potential window of −0.5 to −1.0 V versus RHE and reaches 98.7% with 100 mV positive shift compared with the result measured under dark. The catalytic kinetics studies show a fast initial electron transfer to CO 2 to form *COO − , thanks to the sufficient exposed active sites resulting from the nanosheet nature and adjusted electron transfer pathway caused by the porphyrin photoswitch.