Photocatalytic CO2 reduction to syngas using metallosalen covalent organic frameworks

Metallosalen-covalent organic frameworks have recently gained attention in photocatalysis. However, their use in CO 2 photoreduction is yet to be reported. Moreover, facile preparation of metallosalen-covalent organic frameworks with good crystallinity remains considerably challenging. Herein, we re...

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Bibliographic Details
Published in:Nature communications Vol. 14; no. 1; pp. 6971 - 9
Main Authors: Zhou, Wei, Wang, Xiao, Zhao, Wenling, Lu, Naijia, Cong, Die, Li, Zhen, Han, Peigeng, Ren, Guoqing, Sun, Lei, Liu, Chengcheng, Deng, Wei-Qiao
Format: Journal Article
Language:English
Published: London Nature Publishing Group UK 01.11.2023
Nature Publishing Group
Nature Portfolio
Subjects:
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Carbon dioxide
Cobalt
Controllability
Covalence
Crystallinity
Evacuation
Humanities and Social Sciences
multidisciplinary
Photocatalysis
Photoreduction
Porous materials
Science
Science (multidisciplinary)
Synthesis
Synthesis gas
Triazine
Vacuum
ISSN:2041-1723, 2041-1723
Online Access:Get full text
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Summary:Metallosalen-covalent organic frameworks have recently gained attention in photocatalysis. However, their use in CO 2 photoreduction is yet to be reported. Moreover, facile preparation of metallosalen-covalent organic frameworks with good crystallinity remains considerably challenging. Herein, we report a series of metallosalen-covalent organic frameworks produced via a one-step synthesis strategy that does not require vacuum evacuation. Metallosalen-covalent organic frameworks possessing controllable coordination environments of mononuclear and binuclear metal sites are obtained and act as photocatalysts for tunable syngas production from CO 2 . Metallosalen-covalent organic frameworks obtained via one-step synthesis exhibit higher crystallinity and catalytic activities than those obtained from two-step synthesis. The optimal framework material containing cobalt and triazine achieves a syngas production rate of 19.7 mmol g −1 h −1 (11:8 H 2 /CO), outperforming previously reported porous crystalline materials. This study provides a facile strategy for producing metallosalen-covalent organic frameworks of high quality and can accelerate their exploration in various applications. Here, the authors report a gram-scale, one-step synthesis of metallosalen-covalent organic frameworks (M(salen)-COFs) without vacuum evacuation. M(salen)-COFs exhibit good crystallinity and adjustable activities in CO2 photoreduction to syngas.
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ISSN:2041-1723
2041-1723
DOI:10.1038/s41467-023-42757-7