Advancements in CO2 capture by absorption and adsorption: A comprehensive review

Journal of CO2 Utilization, Год журнала: 2024, Номер 81, С. 102727 - 102727

Опубликована: Март 1, 2024

In the face of escalating global climate challenges, effective carbon dioxide (CO₂) capture techniques remain at forefront mitigating anthropogenic greenhouse gas emissions. This comprehensive review elucidates latest advancements in CO₂ capture, emphasizing two predominant methodologies: absorption and adsorption. We delve into mechanisms underlying each process, highlighting novel materials technologies that have emerged over recent years. For absorption, focus is placed on material design strategy, identifying new class amines, ionic liquids (ILs) nanofluids for enhanced CO2 capacities reduced energy requirements. realm adsorption, synthesis innovative adsorbents, such as metal organic framework (MOF), polymers, inorganic silicon-based biochar byproducts from biomass with superior selectivity stability, explored. Additionally, addresses challenges associated method, offering insights potential avenues further research. By providing a holistic overview current landscape this article serves pivotal resource researchers industry professionals aiming to advance sustainable solutions combat change.

Язык: Английский

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Structural Motifs in Covalent Organic Frameworks for Photocatalysis

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Март 10, 2024

Abstract Covalent organic frameworks (COFs) attract significant attention due to their ordered, crystalline, porous, metal‐free, and predictable structures. These unique characteristics offer great opportunities for the diffusion transmission of photogenerated charges during photocatalysis. Currently, a considerable number COFs are used as metal‐free semiconductor photocatalysts. This review aims understand relationships between structure photocatalysis performance provides in‐depth insight into synthetic strategy improve performance. Subsequently, focuses on structural motif in sustainable photocatalytic hydrogen evolution, carbon dioxide reduction, peroxide generation, compound transformations. Last, conjunction with progress achieved challenges yet be overcome, candid discussion is undertaken regarding field COF photocatalysis, accompanied by presentation potential research avenues future directions. seeks provide readers comprehensive understanding pivotal role robust guidance innovative utilization

Язык: Английский

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Molecular‐Level Regulation Strategies Toward Efficient Charge Separation in Donor−Acceptor Type Conjugated Polymers for Boosted Energy‐Related Photocatalysis

Advanced Energy Materials, Год журнала: 2023, Номер 14(5)

Опубликована: Дек. 11, 2023

Abstract The development of efficient photocatalysts for artificial photocatalytic energy conversion is an intriguing strategy. Promisingly, conjugated polymers (CPs) have been actively investigated as alternatives to traditional inorganic semiconductors photocatalysis due their molecularly tunable optoelectronic properties, thus providing a great platform molecular design. Incorporating donor (D) and acceptor (A) units into the backbone CPs ensures adequate D−A interface, which essential facilitating charge separation. This approach also allows bandgaps leading significant progress in conversions recent years. Here, fundamentals D–A type are initially outlined, followed by advanced experimental methods density functional theory (DFT) calculations investigating carrier dynamics. Then, detailed exposition synthetic strategies carried out. Their extensive applications diverse energy‐related conversions, such hydrogen evolution, oxygen overall water splitting, CO 2 reduction, N H O evolution comprehensively presented. review provides new comprehensive insights molecular‐level design catalysts boosted conversion, expected further advance photocatalysis.

Язык: Английский

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Engineering a Hydrophobic–Hydrophilic Diphase in a Bi₂WO₆–C₃N₄ Heterojunction for Solar-Powered CO₂ Reduction

ACS Catalysis, Год журнала: 2023, Номер 14(1), С. 138 - 147

Опубликована: Дек. 12, 2023

Solar-driven reduction of CO2 to valuable carbon products is an attractive pathway for energy production. The photoreduction efficiency determined by the mass transfer and charge carrier recombination efficiency. Herein, we propose a Bi2WO6–C3N4 heterojunction with hydrophobic–hydrophilic diphase promote separation. amphipathic achieved high-efficiency photocatalytic conversion into CO CH4 in H2O vapor, yielding up 25.54 7.69 μmol h–1 g–1 CH4, respectively. well-designed increased concentration on hydrophobic surface enhanced adsorption hydrophilic surface. Consequently, reactant gases could be directly fed system consume photogenerated charges. In situ diffuse reflectance infrared Fourier transform spectroscopy molecular dynamics simulations elucidated activity reaction mechanism during photocatalysis. serves as template development reliable solar-powered systems reduction.

Язык: Английский

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Postsynthetic Annulation of Three-Dimensional Covalent Organic Frameworks for Boosting CO₂ Photoreduction

Journal of the American Chemical Society, Год журнала: 2023, Номер 145(28), С. 15473 - 15481

Опубликована: Июль 8, 2023

Three-dimensional covalent organic frameworks (3D COFs), with interconnected pores and exposed functional groups, provide new opportunities for the design of advanced materials through postsynthetic modification. Herein, we demonstrate successful annulation 3D COFs to construct efficient CO2 reduction photocatalysts. Two COFs, NJU-318 NJU-319Fe, were initially constructed by connecting hexaphenyl-triphenylene units pyrene- or Fe-porphyrin-based linkers. Subsequently, moieties within postsynthetically transformed into π-conjugated hexabenzo-trinaphthylene (pNJU-318 pNJU-319Fe) enhance visible light absorption photoreduction activity. The optimized photocatalyst, pNJU-319Fe, shows a CO yield 688 μmol g-1, representing 2.5-fold increase compared that unmodified NJU-319Fe. Notably, direct synthesis hexabenzo-trinaphthylene-based COF catalysts was unsuccessful due low solubility conjugated This study not only provides an effective method photocatalysts but also highlights unlimited tunability structural

Язык: Английский

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Active Site Engineering in Reticular Covalent Organic Frameworks for Photocatalytic CO₂ Reduction

Advanced Functional Materials, Год журнала: 2023, Номер 34(43)

Опубликована: Окт. 15, 2023

Abstract Photochemical CO 2 reduction using ubiquitous sunlight akin to natural photosynthesis is an effective approach for conversion of renewable energy into useful chemical feedstock. Driven by the need earth‐abundant, inexpensive, and sustainable photocatalysts with practical applicability, covalent organic frameworks (COFs) have emerged as a new generation molecularly defined semiconductors tunable optoelectronic properties. These reticular highly ordered, porous crystalline structures can be tailor‐made covalently combining building blocks target specific functions. To date, numerous COFs been reported, which show promising activity photocatalytic allowing derive structure–property–function relationships. In this review, different reported strategies are comprehensively analyzed categorized active site engineering in COF synthetic rationale resulting catalytic each discussed. The recent advancements terms tailored photocatalyst design then critically assessed, aspects advanced materials characterization analyzed, future perspectives challenges field highlighted.

Язык: Английский

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Stabilizing atomic Ru species in conjugated sp2 carbon-linked covalent organic framework for acidic water oxidation

Nature Communications, Год журнала: 2024, Номер 15(1)

Опубликована: Июнь 26, 2024

Abstract Suppressing the kinetically favorable lattice oxygen oxidation mechanism pathway and triggering adsorbate evolution at expense of activity are state-of-the-art strategies for Ru-based electrocatalysts toward acidic water oxidation. Herein, atomically dispersed Ru species anchored into an stable vinyl-linked 2D covalent organic framework with unique crossed π-conjugation, termed as COF-205-Ru. The π-conjugated structure COF-205-Ru not only suppresses dissolution through strong Ru-N motifs, but also reduces state by multiple π-conjugations, thereby activating coordinated to stabilizing vacancies during process. Experimental results including X-ray absorption spectroscopy, in situ Raman powder diffraction patterns, theoretical calculations unveil activated elevated energy level O 2 p band, decreased vacancy formation energy, promoted electrochemical stability, significantly reduced barrier potential determining step Consequently, obtained displays a high mass 2659.3 A g −1 , which is 32-fold higher than commercial RuO retains long-term durability over 280 h. This work provides strategy simultaneously promote stability catalysts

Язык: Английский

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Covalent Organic Framework with Donor¹‐Acceptor‐Donor² Motifs Regulating Local Charge of Intercalated Single Cobalt Sites for Photocatalytic CO₂ Reduction to Syngas

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(31)

Опубликована: Май 22, 2024

Covalent organic framework (COF) has attracted increasing interest in photocatalytic CO

Язык: Английский

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Controllable synthesis of nanostructured flower-like cadmium sulfides for photocatalytic degradation of methyl orange under different light sources

Journal of Water Process Engineering, Год журнала: 2024, Номер 59, С. 105002 - 105002

Опубликована: Фев. 19, 2024

Язык: Английский

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Boosting Solar‐Driven CO₂ Conversion to Ethanol via Single‐Atom Catalyst with Defected Low‐Coordination Cu‐N₂ Motif

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(31)

Опубликована: Май 18, 2024

Cu-based catalysts have been shown to selectively catalyze CO

Язык: Английский

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