A Triptycene‐Based 2D MOF with Vertically Extended Structure for Improving the Electrocatalytic Performance of CO<sub>2</sub> to Methane
Jianning Lv, Wenrui Li, Jiani Li, Zhejiaji Zhu, Anwang Dong, Huixia Lv, Pengfei Li, Bo Wang
Abstract
Abstract Two‐dimensional conductive metal‐organic frameworks (2D‐ c ‐MOFs) have attracted extensive attention owing to their unique structures and physical‐chemical properties. However, the planarly extended structure of 2D‐ c ‐MOFs usually limited the accessibility of the active sites. Herein, we designed a triptycene‐based 2D vertically conductive MOF (2D‐ vc ‐MOF) by coordinating 2,3,6,7,14,15‐hexahydroxyltriptycene (HHTC) with Cu 2+ . The vertically extended 2D‐ vc ‐MOF(Cu) possesses a weak interlayer interaction, which leads to a facile exfoliation to the nanosheet. Compared with the classical 2D‐ c ‐MOFs with planarly extended 2D structures, 2D‐ vc ‐MOF(Cu) exhibits a 100 % increased catalytic activity in terms of turnover number and a two‐fold increased selectivity. Density functional theory (DFT) calculations further revealed that higher activity originated from the lower energy barriers of the vertically extended 2D structures during the CO 2 reduction reaction process.