Mixed-metal Ionothermal Synthesis of Metallophthalocyanine Covalent Organic Frameworks for CO 2 Capture and Conversion.

Autor: Seob Song K; Department of Chemistry, University of Fribourg, Chemin du Musée 9, 1700, Fribourg, Switzerland., Fritz PW; Department of Chemistry, University of Fribourg, Chemin du Musée 9, 1700, Fribourg, Switzerland., Abbott DF; Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1-5, 8093, Zürich, Switzerland., Nga Poon L; Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1-5, 8093, Zürich, Switzerland., Caridade CM; Department of Chemistry, University of Fribourg, Chemin du Musée 9, 1700, Fribourg, Switzerland., Gándara F; Department of New Architectures in Materials Chemistry, Materials Science Institute of Madrid-CSIC, Sor Juana Inés de la Cruz 3, 28049, Madrid, Spain., Mougel V; Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1-5, 8093, Zürich, Switzerland., Coskun A; Department of Chemistry, University of Fribourg, Chemin du Musée 9, 1700, Fribourg, Switzerland.
Jazyk: angličtina
Zdroj: Angewandte Chemie (International ed. in English) [Angew Chem Int Ed Engl] 2023 Sep 18; Vol. 62 (38), pp. e202309775. Date of Electronic Publication: 2023 Aug 11.
DOI: 10.1002/anie.202309775
Abstrakt: Phthalocyanines (PCs) are intriguing building blocks owing to their stability, physicochemical and catalytic properties. Although PC-based polymers have been reported before, many suffer from relatively low stability, crystallinity, and low surface areas. Utilizing a mixed-metal salt ionothermal approach, we report the synthesis of a series of metallophthalocyanine-based covalent organic frameworks (COFs) starting from 1,2,4,5-tetracyanobenzene and 2,3,6,7-tetracyanoanthracene to form the corresponding COFs named M-pPPCs and M-anPPCs, respectively. The obtained COFs followed the Irving-Williams series in their metal contents, surface areas, and pore volume and featured excellent CO 2 uptake capacities up to 7.6 mmol g -1 at 273 K, 1.1 bar. We also investigated the growth of the Co-pPPC and Co-anPPC on a highly conductive carbon nanofiber and demonstrated their high catalytic activity in the electrochemical CO 2 reduction, which showed Faradaic efficiencies towards CO up to 74 % at -0.64 V vs. RHE.
(© 2023 The Authors. Angewandte Chemie International Edition published by Wiley-VCH GmbH.)
Databáze: MEDLINE
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