2D Undulated Metal Hydrogen‑Bonded Organic Frameworks with Self‑Adaption Interlayered Sites for Highly Efficient C-C Coupling in the Electrocatalytic CO_(2) Reduction  

作　　者：Jianning Lv Wenrui Li Shuai Li Shuo Xu Zunhang Lv Zhejiaji Zhu Lu Dai Bo Wang Pengfei Li 

机构地区：[1]Key Laboratory of Cluster Science Ministry of Education,Beijing Key Laboratory of Photoelectronic/Electrophotonic,School of Chemistry and Chemical Engineering,Beijing Institute of Technology,Beijing 100081,People’s Republic of China [2]Advanced Technology Research Institute(Ji’nan),Beijing Institute of Technology,Ji’nan 250300,People’s Republic of China [3]Advanced Research Institute of Multidisciplinary Science,Beijing Institute of Technology(Zhuhai),Zhuhai 519088,People’s Republic of China [4]Petrochina Petrochemical Research Institute,Beijing 102206,People’s Republic of China

出　　处：《Nano-Micro Letters》2025年第7期223-233,共11页纳微快报(英文版)

基　　金：financially supported by the National Natural Science Foundation of China(nos.21971012,61933002,21601015,21625102,21674012,and 81601549);the National Key Research and Development Program of China(2020YFB1506300);Beijing Institute of Technology Research Fund Program for Young Scholars。

摘　　要：The hydrogen-bonded organic frameworks(HOFs)as a new type of porous framework materials have been widely studied in various areas.However,the lack of appropriate active sites,low intrinsic conductivity,and poor stability limited their performance in the field of electrocatalysis.Herein,we designed two 2D metal hydrogen-bonded organic frameworks(2D–M–HOF,M=Cu^(2+)or Ni^(2+))with coordination compounds based on 2,3,6,7,14,15-hexahydroxyl cyclotricatechylene and transition metal ions(Cu^(2+)and Ni^(2+)),respectively.The crystal structure of 2D–Cu–HOF is determined by continuous rotation electron diffraction,indicating an undulated 2D hydrogen-bond network with interlayeredπ-πstacking.The flexible structure of 2D–M–HOF leads to the formation of self-adaption interlayered sites,resulting in superior activity and selectivity in the electrocatalytic conversion of CO_(2) to C_(2) products,achieving a total Faradaic efficiency exceeding 80%due to the high-efficiency C–C coupling.The experimental results and density functional calculations verify that the undulated 2D–M–HOF enables the energetically favorable formation of*OCCHO intermediate.This work provides a promising strategy for designing HOF catalysts in electrocatalysis and related processes.

关 键 词：Hydrogen-bonded organic frameworks Flexible structure Self-adaption interlayered sites Electrocatalytic CO_(2)reduction 

分 类 号：O643.36[理学—物理化学]