“All-in-one” carbon dots-based catalyst for converting CO2 to cyclic carbonates

Wang, Ruijia; Wan, Jianyong; Guo, Hongda; Tian, Bing; Li, Shujun; Li, Jian; Liu, Shouxin; James, Tony D.; Chen, Zhijun

doi:10.1016/j.carbon.2023.118118

Cited by 10 publications

(7 citation statements)

References 69 publications

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“…As the pressure of CO 2 increased from 0.1 MPa to 1 MPa, the yield of 4-phenyl-1, 3dioxolan-2-one remained essentially constant (Figure 3b). The concentration of carbon dioxide does not affect the cyclization reaction of carbon dioxide because the carbon dots are enriched with amino groups on the surface of carbon dots and TBAB [55] together made carbon dots get good catalytic results at 0.1 MPa CO 2 . As the reaction time extended from 0.5 h to 1.5 h, the yield of 4-phenyl-1,3-dioxolan-2-one improved from 67.6 % to 97.0 % (Figure 3c).…”

Section: Epoxide and Co 2 Cyclizationmentioning

confidence: 99%

Carbon Dots as New Effective Catalysts for Knoevenagel Condensation Reaction and Synthesis of Cyclic Carbonates under Solvent‐free Conditions

Yu,

Luo,

Sun

2024

ChemistrySelect

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Carbon dots (CDs) as new efficient catalysts have been developed for the Knoevenagel condensation reaction and the synthesis of cyclic carbonates under solvent‐free conditions. Six kinds of carbon dots with different numbers of amino groups were synthesized. The amine‐terminated carbon dot (NCDs‐1) was synthesized using arginine and ethylenediamine by a microwave technique, and its catalytic action was studied. NCDs‐1 with the highest numbers of amino groups was used as new metal‐free and effective heterogeneous catalysts to perform essential Knoevenagel condensation and cycloaddition reactions in solvent‐free conditions. 1H NMR was used to demonstrate the Knoevenagel condensation mechanism, in situ Fourier infrared spectroscopy was used to investigate CO2 cycloaddition and a catalytic mechanism was postulated. NCDs‐1 showed a yield of 96.3±1.5 % for Knoevenagel condensation of benzaldehyde and malononitrile. In addition, NCDs‐1/TBAB showed a yield of (97.0±1.0 %) of 4‐phenyl‐1,3‐dioxolan‐2‐one for styrene oxide at 100 °C and 0.1 MPa in 1.5 h. A simple and convenient method for catalytic reactions with amine‐terminated carbon dots was developed.

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Section: Epoxide and Co 2 Cyclizationmentioning

confidence: 99%

Carbon Dots as New Effective Catalysts for Knoevenagel Condensation Reaction and Synthesis of Cyclic Carbonates under Solvent‐free Conditions

Yu,

Luo,

Sun

2024

ChemistrySelect

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“…[146,147] Sowohl Kohlenstoffpunkte als auch Kohlenstoffnitride können leicht aus erneuerbarer Biomasse hergestellt werden, was ihre Kosteneffizienz und Nachhaltigkeit unterstreicht. [83,141,142,[148][149][150][151][152][153][154][155][156][157][158][159][160][161][162] Verschiedene Kohlenstoff-basierte Strukturen mit intrinsischen Photoinitiierungseigenschaften wurden entwickelt. [34,35,41,83,130,138,141,142,146,147,[163][164][165][166][167][168][169][170][171][172] Diese photoinitiierenden Systeme sind erfolgreich für die traditionelle freie radikalische Polymerisation, die photo-ATRP, die photo-RAFT und die kationische Photopolymerisation eingesetzt worden.…”

Section: Lichtempfindliche Heterogene Materialien: Ein Alternativer Wegunclassified

Lichtinduzierte Polymerisation katalysiert durch Kohlenstoff‐Nanomaterialien

Luo,

Zhai,

Wang

et al. 2024

Angewandte Chemie

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Carbon nanomaterials, specifically carbon dots and carbon nitrides, play a crucial role as heterogeneous photoinitiators in both radical and cationic polymerization processes. These recently introduced materials offer promising solutions to the limitations of current homogeneous systems, presenting a novel approach to photopolymerization. This review highlights the preparation and photocatalytic performance of these nanomaterials, emphasizing their application in various polymerization techniques, including photoinduced i) free radical, ii) RAFT, iii) ATRP, and iv) cationic photopolymerization. Additionally, it discusses their potential in addressing contemporary challenges and explores prospects in this field. Moreover, carbon nitrides, in particular, exhibit exceptional oxygen tolerance, underscoring their significance in radical polymerization processes and allowing their applications such as 3D printing, surface modification of coatings, and hydrogel engineering.

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“…To date, CO 2 has been successfully transformed into various chemicals, such as methanol, formic acid, methane, and organic carbonates . In particular, the coupling of CO 2 with epoxides to produce cyclic carbonates stands out as one of the most attractive routes owing to its 100% atom economy. − Also, cyclic carbonates show extensive applications as polar aprotic solvents, electrolytes in Li-ion batteries, and intermediates in various organic syntheses. − …”

Section: Introductionmentioning

confidence: 99%

2D Co-Based Metal–Organic Framework Nanosheets for the One-Pot Synthesis of Cyclic Carbonates from Olefins and CO₂

Chen,

Liu,

Duan

et al. 2024

Ind. Eng. Chem. Res.

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One-pot catalysis of olefins and CO 2 provides an economical and energyefficient way for the fixation of CO 2 and the production of cyclic carbonates. In this work, a two-dimensional Co-1,4-benzenedicarboxylate MOF (2D CoBDC) was synthesized via a facile solvothermal reflux method and further examined in the onepot synthesis of cyclic carbonates. The results of activity evaluations and detailed kinetics showed that 2D CoBDC exhibited enhanced catalytic performance (92% of styrene conversion and 85% of styrene carbonate yield) under cocatalyst-free conditions of 100 °C, 1 bar, and 12 h, compared with the 3D counterpart. The results from effectiveness factors and Thiele modulus revealed the full utilization and negligible mass transfer limitations of the 2D CoBDC catalyst. A further recycle experiment confirmed the excellent reusability of 2D CoBDC with little loss in catalytic activity after at least 5 runs. Finally, a possible mechanism of the one-pot reaction catalyzed by 2D CoBDC was proposed.

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“All-in-one” carbon dots-based catalyst for converting CO2 to cyclic carbonates

Cited by 10 publications

References 69 publications

Carbon Dots as New Effective Catalysts for Knoevenagel Condensation Reaction and Synthesis of Cyclic Carbonates under Solvent‐free Conditions

Carbon Dots as New Effective Catalysts for Knoevenagel Condensation Reaction and Synthesis of Cyclic Carbonates under Solvent‐free Conditions

Lichtinduzierte Polymerisation katalysiert durch Kohlenstoff‐Nanomaterialien

2D Co-Based Metal–Organic Framework Nanosheets for the One-Pot Synthesis of Cyclic Carbonates from Olefins and CO₂

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“All-in-one” carbon dots-based catalyst for converting CO2 to cyclic carbonates

Cited by 10 publications

References 69 publications

Carbon Dots as New Effective Catalysts for Knoevenagel Condensation Reaction and Synthesis of Cyclic Carbonates under Solvent‐free Conditions

Carbon Dots as New Effective Catalysts for Knoevenagel Condensation Reaction and Synthesis of Cyclic Carbonates under Solvent‐free Conditions

Lichtinduzierte Polymerisation katalysiert durch Kohlenstoff‐Nanomaterialien

2D Co-Based Metal–Organic Framework Nanosheets for the One-Pot Synthesis of Cyclic Carbonates from Olefins and CO2

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2D Co-Based Metal–Organic Framework Nanosheets for the One-Pot Synthesis of Cyclic Carbonates from Olefins and CO₂