Implanting Built-In Electric Field in Heterometallic Phthalocyanine Covalent Organic Frameworks for Light-Assisted CO 2 Electroreduction

Abstract

Open AccessCCS ChemistryRESEARCH ARTICLES29 Dec 2022Implanting Built-in Electric Field in Hetero-metallic Phthalocyanine Covalent Organic Frameworks for Light-assisted CO2 Electroreduction Xi Tian, Xin Huang, Jing-Wen Shi, Jie Zhou, Can Guo, Rui Wang, Yi-Rong Wang, Meng Lu, Qi Li, Yifa Chen, Shun-Li Li and Ya-Qian Lan Xi Tian Google Scholar More articles by this author , Xin Huang Google Scholar More articles by this author , Jing-Wen Shi Google Scholar More articles by this author , Jie Zhou Google Scholar More articles by this author , Can Guo Google Scholar More articles by this author , Rui Wang Google Scholar More articles by this author , Yi-Rong Wang Google Scholar More articles by this author , Meng Lu Google Scholar More articles by this author , Qi Li Google Scholar More articles by this author , Yifa Chen Google Scholar More articles by this author , Shun-Li Li Google Scholar More articles by this author and Ya-Qian Lan Google Scholar More articles by this author https://doi.org/10.31635/ccschem.022.202202519 SectionsAboutPDF ToolsAdd to favoritesDownload CitationsTrack Citations ShareFacebookTwitterLinked InEmail Strategy that enables introducing bimetallic active sites is desired for the exploration of light-sensitive covalent-organic-frameworks (COFs) based electrocatalysts in light-assisted CO2-electroreduction. Herein, salphen-pockets have been implanted into phthalocyanine-based COFs through the elaborate design of structure-struts and thus-produced NiPc-DFP-M COF (M = Ni and Co) possess the advantages of controllably bimetallic centers with different coordination-environments, outstanding light-sensitivity, and built-in electric-field effect that can be successfully applied in light-assisted CO2 electroreduction. Notably, the optimally hetero-metallic NiPc-DFP-Co COF presents a high FECO (~100%) in a wide potential-range of -0.7 V to -1.1 V and ~70% energy-efficiency (-0.7 V) under light-irradiation, which is superior to mono-/homo-metallic COFs and under dark conditions. The high performance can be ascribed to the synergistic effect of NiPc and Co-salphen pockets that can largely reduce the rate-determining energy-barrier and enhance the electron-density to boost the light-assisted activity as supported by DFT-calculations. Download figure Download PowerPoint Previous articleNext article FiguresReferencesRelatedDetails Issue AssignmentVolume 0Issue jaPage: 1-11 Copyright & Permissions© 2022 Chinese Chemical Society Downloaded 0 times PDF downloadLoading ...