Enhanced carbon dioxide conversion at ambient conditions via a pore enrichment effect

Wei Zhou, Qi-Wen Deng, Guo-Qing Ren, Lei Sun (), Li Yang, Yi-Meng Li, Dong Zhai, Yi-Hong Zhou and Wei-Qiao Deng ()
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Wei Zhou: Shandong University
Qi-Wen Deng: Shandong University
Guo-Qing Ren: Shandong University
Lei Sun: Shandong University
Li Yang: Shandong University
Yi-Meng Li: Shandong University
Dong Zhai: Shandong University
Yi-Hong Zhou: China Three Gorges University
Wei-Qiao Deng: Shandong University

Nature Communications, 2020, vol. 11, issue 1, 1-9

Abstract: Abstract Chemical fixation of carbon dioxide (CO2) may be a pathway to retard the current trend of rapid global warming. However, the current economic cost of chemical fixation remains high because the chemical fixation of CO2 usually requires high temperature or high pressure. The rational design of an efficient catalyst that works at ambient conditions might substantially reduce the economic cost of fixation. Here, we report the rational design of covalent organic frameworks (COFs) as efficient CO2 fixation catalysts under ambient conditions based on the finding of “pore enrichment”, which is concluded by a detailed investigation of the 10994 COFs. The best predicted COF, Zn-Salen-COF-SDU113, is synthesized, and its efficient catalytic performance for CO2 cycloaddition to terminal epoxide is confirmed with a yield of 98.2% and turnover number (TON) of 3068.9 under ambient conditions, which is comparable to the reported leading catalysts. Moreover, this COF achieves the cycloaddition of CO2 to 2,3-epoxybutane under ambient conditions among all porous materials. This work provides a strategy for designing porous catalysts in the economic fixation of carbon dioxide.

Date: 2020
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DOI: 10.1038/s41467-020-18154-9

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