Improved photocatalytic CO2 and epoxides cycloaddition via the synergistic effect of Lewis acidity and charge separation over Zn modified UiO-bpydc

Ordered mesoporous carbon encapsulated linear poly(ionic liquid)s enabling synergy effect of surface groups and ionic moieties for CO2 fixation under mild conditions

“…A family of carbon encapsulated linear PIL samples, termed X%PIL-T@FDU-15-600 (X% index the loading amount), were prepared by using PIL-T with different loading amounts, including 15%PIL-T@FDU-15-600, 10%PIL-90-FDU-15-600, and 20%PIL-90@FDU-15-600. There was no N element in FDU-15-600 and the detectable N species on X%PIL-T@FDU-15-600 samples reflected the immobilization of PIL-T (Table S1, entries [6][7][8][9][10][11][12]. The PIL content linearly increased with the loading amount, while close to each other by fixing the loading amount.…”

“…Carbon dioxide (CO 2 ) is one of the chief greenhouse gases causing growing global warming [1][2][3][4], and also an abundant inexpensive and nontoxic C1 feedstock [5,6]. In this regard, chemically fixing CO 2 into high-value-added chemicals has attracted great attention in the mitigation of CO 2 emission [7][8][9][10][11]. One of the most promising approaches is the cycloaddition reaction between CO 2 and three-member ring organic compounds such as aziridines and epoxides [12][13][14].…”

Strategic Design of Mg-Centered Porphyrin Metal–Organic Framework for Efficient Visible Light-Promoted Fixation of CO2 under Ambient Conditions: Combined Experimental and Theoretical Investigation

“…Particularly, the fixation of CO 2 from direct air offers potential advantages of carbon capture from any place irrespective of emission sources. − However, the inertness of CO 2 offers significant challenge for its functionalization under moderate conditions. Among the several catalytic CO 2 utilization processes known, the cycloaddition of carbon dioxide with epoxides to afford cyclic carbonates is regarded as the most atom-efficient process. − Furthermore, cyclic carbonates are useful commodity chemicals in the manufacture of polymers and pharmaceuticals. − However, most of the catalysts known for the production of cyclic carbonates require high CO 2 pressure and/or high-temperature conditions. − In contrast, green and sustainable chemistry practices prefer the use of environmentally friendly mild conditions for the fixation of CO 2 into valuable products. − In this context, photocatalytic fixation of CO 2 by utilizing natural sunlight as a light source for the production of high-value cyclic carbonates offers potential advantages over traditional thermally driven conversion. − Therefore, sunlight/visible light-promoted conversion of CO 2 into value-added chemicals is sought to be a promising step toward green and sustainable development . However, majority of the photocatalysts possess a wide band gap and are known to be active only in the UV region of the solar spectrum which constitutes only about 4% of sunlight reaching the earth.…”

Amino-Functionalized Ionic-Liquid-Grafted Covalent Organic Frameworks for High-Efficiency CO2Capture and Conversion

“…With the massive consumption of fossil fuels, excessive carbon dioxide (CO 2 ) emissions are considered as a thorny climate and environmental problem. , However, as a reproducible and nontoxic C1 resource, CO 2 can be converted into high-value-added chemicals under certain conditions, realizing the efficient utilization of resources and reducing environment hazards. , The production of cyclic carbonates from CO 2 and epoxide by cycloaddition, as an atom-economic reaction, has attracted a surge of attention. , In view of the large-scale application of cyclic carbonates, homogeneous catalysts and heterogeneous catalysts such as ionic liquids (ILs), metal oxides, metal–organic frameworks (MOFs), zeolites, etc., have been extensively utilized for CO 2 cycloaddition. − A homogeneous system is not conducive to product separation . For most heterogeneous catalysts, the toxic metals can be released from metal oxides.…”