单原子气体
卟啉
电催化剂
材料科学
纳米尺度
单原子离子
图层(电子)
石墨烯
金属
纳米技术
化学工程
化学
电化学
光化学
物理化学
有机化学
电极
工程类
冶金
作者
Deren Yang,Shouwei Zuo,Haozhou Yang,Yecheng Zhou,Xun Wang
标识
DOI:10.1002/anie.202006899
摘要
Abstract Developing two‐dimensional (2D) and single atomic layered materials is a fascinating challenge. Here we successfully synthesize porphyrin‐based monoatomic layer (PML), a freestanding 2D porphyrin‐based material of monomer‐unit thickness (2.8 Å). The solvothermal method provides a bottom‐up approach for tailoring the monoatomic layer from the nanoscale to the milliscale. PMLs containing accurately tailorable M‐N 4 units (M=Cu and Au) were synthesized, which present metal center‐dependent performance for CO 2 electrocatalysis. PML with Cu‐N 4 centers performs high faradaic efficiencies of HCOO − and CH 4 (80.86 % and 11.51 % at −0.7 V, respectively) while PML with Au‐N 4 centers generates HCOO − and CO as major products (40.90 % and 34.40 % at −0.8 V, respectively). Irreversible restructuring behavior of Cu sites is also observed. Based on the graphene‐like properties and metal center‐selectivity relationships, we believe that PML will play a distinct role in various applications.
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