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Synthesis of metal-phenanthroline-modified hypercrosslinked polymer for enhanced CO2 capture and conversion via chemical and photocatalytic methods under ambient conditions

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Chem Synth 2024;4:[Accepted].
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Abstract

Catalytic conversion of CO2 into valuable chemicals is a promising approach to mitigate the greenhouse effect and alleviate energy shortages. Hypercrosslinked polymers (HCPs) offer a scalable and stable platform for this conversion, but they often suffer from low CO2 adsorption and activation capabilities, necessitating high temperatures and pressures for effectiveness. To overcome these limitations, nitrogen-based CO2-philic active sites have been integrated into the structure of HCPs, enhancing CO2 attraction and leading to superior adsorption performance. The incorporation of cobalt ions (Co2+) further bolsters CO2 affinity, with HCP-PNTL-Co-B achieving the highest observed adsorption heat of 33.0 kJ mol-1 alongside a substantial 2.0 mmol g-1 CO2 uptake. These modified HCPs exhibit higher yields and reaction rates in cycloaddition reactions with co-catalyst TBAB at room temperature and atmospheric pressure, while HCP-PNTL-Co-B demonstrates a higher CO production rate (2173 μmol g-1 h-1) and selectivity (84%) in photocatalytic reduction reaction. This research has successfully achieved outstanding carbon dioxide capture and conversion performance at room temperature and atmospheric pressure by introducing CO2-philic active sites and cobalt ions (Co2+) into HCPs via facile one-step polymerization. This study provides a new approach to the design of highly efficient organic catalysts for CO2 conversion.

Keywords

Hypercrosslinked polymers, N heteroatoms, CO2 cycloaddition, CO2 photoreduction

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Peng M, Gao H, Tan B, Ouyang H, Song K, Wang S. Synthesis of metal-phenanthroline-modified hypercrosslinked polymer for enhanced CO2 capture and conversion via chemical and photocatalytic methods under ambient conditions. Chem Synth 2024;4:[Accept]. http://dx.doi.org/10.20517/cs.2024.05

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© The Author(s) 2024. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, sharing, adaptation, distribution and reproduction in any medium or format, for any purpose, even commercially, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
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