Green and sustainable molten salt electrochemistry for the conversion of secondary carbon pollutants to advanced carbon materials

Chen, Yunfei; Wang, Mingyong; Zhang, Jintao; Tu, Jiguo; Ge, Jianbang; Jiao, Shuqiang

doi:10.1039/d1ta03263a

Cited by 40 publications

(24 citation statements)

References 234 publications

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“…MS (m/z): calcd for [M-4Br] 4 + /4: 271.6269; found: 271.6248. 1 H NMR (400 MHz, DMSO-d 6 ) δ 9.63 (d, J = 6.0 Hz, 8H), 9.20 (s, 8H), 9.03 (d, J = 5.8 Hz, 8H), 7.87 (d, J = 7.8 Hz, 8H), 7.73 (d, J = 7.7 Hz, 8H), 6.86 (dd, J = 17.5, 10.9 Hz, 4H), 6.19 (s, 8H), 5.98 (d, J = 17.7 Hz, 4H), 5.43 (d, J = 10.9 Hz, 4H), À 3.13 (d, J = 14.9 Hz, 2H). UV-vis (DMF) λ max /nm: 427 (Soret band), 517, 553, 590, 646 (Q bands).…”

Section: Materials and Measurementsmentioning

confidence: 99%

A Pyridinium‐Pyridinium Zinc(II) Porphyrin Ion Porous Organic Polymer as Efficient Heterogeneous Catalyst for Cycloaddition of Epoxides with CO₂

Wang

et al. 2023

Eur J Inorg Chem

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A zinc(II)porphyrin‐based ion porous organic polymer (ZnTPyPBr4‐iPOP) is successfully synthesized from newly designed pyridinium‐functionalized cationic Zn‐porphyrin monomer (ZnTPyPBr4) by free radical self‐polymerization, and is employed as an efficient bifunctional heterogeneous catalyst for CO2 cycloaddition reaction with epoxides. The ZnTPyPBr4‐iPOP exhibits excellent catalytic performance and good substrate expansion in CO2 cycloaddition reaction under solvent‐free and cocatalyst‐free conditions with a TOF as high as 15,500 h−1 for the cycloaddition of CO2 and epichlorohydrin. The synergistic effect of zinc(II)porphyrin as the Lewis acidic site and the Br− anion as the nucleophile in ZnTPyPBr4‐iPOP responds to the high catalytic activity. Moreover, ZnTPyPBr4‐iPOP can easily be recovered and reused at least seven times without the loss of activity. This work provides a valuable approach for the synthesis of novel and efficient heterogeneous catalyst for CO2 cycloaddition.

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Section: Materials and Measurementsmentioning

confidence: 99%

A Pyridinium‐Pyridinium Zinc(II) Porphyrin Ion Porous Organic Polymer as Efficient Heterogeneous Catalyst for Cycloaddition of Epoxides with CO₂

Wang

et al. 2023

Eur J Inorg Chem

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“…[37][38][39] Several reviews on the electro-splitting of CO 2 into carbon materials in molten salts have been reported. [40][41][42][43][44] However, the obtained products are amorphous carbons in many cases and a thorough summary of the preparation of graphitic carbons is essential for a deeper understanding of the conversion mechanism.…”

Section: Introductionmentioning

confidence: 99%

Molten salt electro‐preparation of graphitic carbons

Zhu

Gao

et al. 2023

Exploration

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Graphite has been used in a wide range of applications since the discovery due to its great chemical stability, excellent electrical conductivity, availability, and ease of processing. However, the synthesis of graphite materials still remains energy-intensive as they are usually produced through a high-temperature treatment (>3000 • C). Herein, we introduce a molten salt electrochemical approach utilizing carbon dioxide (CO 2 ) or amorphous carbons as raw precursors for graphite synthesis. With the assistance of molten salts, the processes can be conducted at moderate temperatures (700-850 • C). The mechanisms of the electrochemical conversion of CO 2 and amorphous carbons into graphitic materials are presented. Furthermore, the factors that affect the graphitization degree of the prepared graphitic products, such as molten salt composition, working temperature, cell voltage, additives, and electrodes, are discussed. The energy storage applications of these graphitic carbons in batteries and supercapacitors are also summarized. Moreover, the energy consumption and cost estimation of the processes are reviewed, which provides perspectives on the large-scale synthesis of graphitic carbons using this molten salt electrochemical strategy.

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“…1 The excessive CO 2 emission directly contributes to a series of environmental problems such as climate warming and sea level rise. 2 For sake of solving these intractable environmental issues, scientists have done a lot of research work. 3 In recent years, the development of porous organic polymer materials based on CO 2 adsorption has been receiving a lot of attention, for example, metal organic frameworks (MOF), 4 covalent organic frameworks (COF), 5 conjugated microporous polymers (CMP).…”

Section: Introductionmentioning

confidence: 99%

“…With the development of industrial economy, the overexploitation and utilization of fossil fuels has caused CO 2 concentration to increase in the atmosphere 1 . The excessive CO 2 emission directly contributes to a series of environmental problems such as climate warming and sea level rise 2 . For sake of solving these intractable environmental issues, scientists have done a lot of research work 3 .…”

Section: Introductionmentioning

confidence: 99%

Low cross‐linked polyimide aerogel with imidazole for CO₂ adsorption

Gao

Dong

Zhang

et al. 2022

J of Applied Polymer Sci

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In this study, low cross‐linked mesoporous polyimide aerogels with imidazole were successfully synthesized by co‐polymerization method at room temperature from DMBZ, ABIA, PMDA, and TAB. This synthesis method is milder than previous that of porous material synthesis. The experimental results show that polyimide aerogel with imidazole is a mesoporous material. The thermal decomposition temperatures of obtained polyimide aerogels are all above 450°C, which exhibited outstanding thermal stability. The microscopic morphology varies with the ratio of DMBZ/ABIA monomers. The specific surface area of polyimide aerogel tends to increase first and then decrease with the increase of ABIA content. The largest specific surface area is 240.87 m2/g. However, polyimide aerogel with high specific surface area had not high CO2 adsorption. In contrast, the PAPI‐4 sample with smaller specific surface area had higher CO2 adsorption. The maximum CO2 adsorption capacity is 14.20 cm3/g, which is comparable to those of previously reported porous organic polymers. This suggests that polyimide aerogel can be used as an adsorbent material. The high CO2 adsorptions may be attributed to the abundance of nitrogen‐rich heteroatoms in the polyimide networks.

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Green and sustainable molten salt electrochemistry for the conversion of secondary carbon pollutants to advanced carbon materials

Abstract: Carbon emissions have cause serious climate change such as global warming, glacier melting, and sea level rise and so on. Carbon neutrality becomes a global target and the sustainable disposal...

Cited by 40 publications

References 234 publications

A Pyridinium‐Pyridinium Zinc(II) Porphyrin Ion Porous Organic Polymer as Efficient Heterogeneous Catalyst for Cycloaddition of Epoxides with CO₂

A Pyridinium‐Pyridinium Zinc(II) Porphyrin Ion Porous Organic Polymer as Efficient Heterogeneous Catalyst for Cycloaddition of Epoxides with CO₂

Molten salt electro‐preparation of graphitic carbons

Low cross‐linked polyimide aerogel with imidazole for CO₂ adsorption

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Green and sustainable molten salt electrochemistry for the conversion of secondary carbon pollutants to advanced carbon materials

Abstract: Carbon emissions have cause serious climate change such as global warming, glacier melting, and sea level rise and so on. Carbon neutrality becomes a global target and the sustainable disposal...

Cited by 40 publications

References 234 publications

A Pyridinium‐Pyridinium Zinc(II) Porphyrin Ion Porous Organic Polymer as Efficient Heterogeneous Catalyst for Cycloaddition of Epoxides with CO2

A Pyridinium‐Pyridinium Zinc(II) Porphyrin Ion Porous Organic Polymer as Efficient Heterogeneous Catalyst for Cycloaddition of Epoxides with CO2

Molten salt electro‐preparation of graphitic carbons

Low cross‐linked polyimide aerogel with imidazole for CO2 adsorption

Contact Info

Product

Resources

About

A Pyridinium‐Pyridinium Zinc(II) Porphyrin Ion Porous Organic Polymer as Efficient Heterogeneous Catalyst for Cycloaddition of Epoxides with CO₂

A Pyridinium‐Pyridinium Zinc(II) Porphyrin Ion Porous Organic Polymer as Efficient Heterogeneous Catalyst for Cycloaddition of Epoxides with CO₂

Low cross‐linked polyimide aerogel with imidazole for CO₂ adsorption