Copper indium sulfide quantum dots in photocatalysis

Journal of Colloid and Interface Science, Journal Year: 2023, Volume and Issue: 638, P. 193 - 219

Published: Jan. 25, 2023

Language: Английский

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Integrating Enrichment, Reduction, and Oxidation Sites in One System for Artificial Photosynthetic Diluted CO₂ Reduction

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(40)

Published: June 26, 2023

Artificial photosynthetic diluted CO2 reduction directly driven by natural sunlight is a challenging, but promising way to realize carbon-resources recycling utilization. Herein, three-in-one photocatalytic system of enrichment, and H2 O oxidation sites designed for reduction. A Zn-Salen-based covalent organic framework (Zn-S-COF) with reductive synthesized; then, ionic liquids (ILs) are loaded into the pores. As result, [Emim]BF4 @Zn-S-COF shows visible-light-driven -to-CO conversion rate 105.88 µmol g-1 h-1 under (15%) atmosphere, even superior than most photocatalysts in high concentrations . Moreover, also reaches 126.51 5 h. Further experiments theoretical calculations reveal that triazine ring Zn-S-COF promotes activity sites, ILs provide an enriched realizing efficient

Language: Английский

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Photocatalytic CO2 reduction with aminoanthraquinone organic dyes

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: Feb. 25, 2023

The direct utilization of solar energy to convert CO2 into renewable chemicals remains a challenge. One essential difficulty is the development efficient and inexpensive light-absorbers. Here we show series aminoanthraquinone organic dyes promote efficiency for visible light-driven reduction CO when coupled with an Fe porphyrin catalyst. Importantly, high turnover numbers can be obtained both photosensitizer catalyst, which has not been achieved in current systems. Structure-function study performed substituents having distinct electronic effects reveals that built-in donor-acceptor property significantly promotes photocatalytic activity. We anticipate this gives insight continued advanced photocatalysts conversion.

Language: Английский

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Ordered Integration and Heterogenization of Catalysts and Photosensitizers in Metal-/Covalent-Organic Frameworks for Boosting CO₂ Photoreduction

Accounts of Chemical Research, Journal Year: 2023, Volume and Issue: 56(19), P. 2676 - 2687

Published: Sept. 14, 2023

ConspectusSolar-driven CO2 reduction into value-added chemicals, such as CO, HCOOH, CH4, and C2+ products, has been regarded a potential way to alleviate environmental pollution the energy crisis. In past decades, numerous pioneered homogeneous catalytic systems composed of soluble photosensitizers (PSs) active sites (CASs) have explored for photoreduction. Nevertheless, inefficient electron migration based on random collision between CASs PSs in usually causes mediocre performance. Moreover, relatively poor separation/recycling capability inevitably reduced their reusability practicality. The rational combination proven play critical roles development highly efficient heterogeneous catalysts improve performance, anchoring them onto solid matrixes or connecting through bridging ligands. However, developing effective assembly strategies achieve ordered orientation uniform heterogenization remains great challenge, mainly due lack crystallinity transformation structural tailoring ability traditional catalysts. synthesis strategies, many photocatalytic are still unable high transformation.Metal-organic frameworks (MOFs) covalent-organic (COFs) recently attracted broad interest toward photocatalysis because diverse precursors, well-defined tailorable structures, abundant exposed surface areas, etc. Especially, MOFs COFs beneficial improved light harvesting charge separation, greatly helping address aforementioned challenges. crystalline structures facilitate establishment structure-activity relationship. Therefore, it is increasingly important summarize integration provide deep insight MOF/COF-based photocatalysts.In this Account, we photoconversion describe relationships guide design Given unique features COFs, emphasized optimize including confinement nanoparticles (NPs) photosensitizing frameworks, co-coordination CASs, ligand-to-metal charge-transfer secondary building units frameworks. activity, selectivity, sacrificial agent, stability these were then discussed. More importantly, powerful platforms understand key steps boosting photoreduction exploring mechanism, involving harvesting, electron-hole separation/migration, redox reactions. Finally, perspective challenge MOF/COF further proposed It expected that Account would with afford significant inspiration enhanced performance catalysis.

Language: Английский

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MOFs materials as photocatalysts for CO2 reduction: Progress, challenges and perspectives

Carbon Capture Science & Technology, Journal Year: 2024, Volume and Issue: 11, P. 100191 - 100191

Published: Jan. 19, 2024

Photocatalytic reduction of carbon dioxide (CO2) presents a pivotal solution to address meteorological and ecological challenges. Currently, metal-organic frameworks (MOFs) with their crystalline porosity, adjustable structures, diverse chemical functionalities have garnered significant attention in the realm photocatalytic CO2 reduction. This review provides brief introduction MOF material applications Then, it undertakes comprehensive examination MOFs, summarizing key attributes, including large surface area, structural multifunctionalities, responsiveness visible light, along an analysis heterojunctions methods preparation. Additionally, elucidates fundamental principle photocatalysis reduction, encompassing both half overall reactions. Furthermore, classification MOF-based materials is explored, proposed mechanism for update on recent developments this field. Finally, outlines challenges potential opportunities utilizing MOFs offering valuable insights scholars seeking innovative approaches not only enhance but also advance other processes.

Language: Английский

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Facilely tunable dodecahedral polyoxometalate framework loaded with mono- or bimetallic sites for efficient photocatalytic CO2 reduction

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 346, P. 123733 - 123733

Published: Jan. 14, 2024

Language: Английский

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Regulating the Electronic Configuration of Ni Sites by Breaking Symmetry of Ni‐Porphyrin to Facilitate CO₂ Photocatalytic Reduction

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(25)

Published: Feb. 10, 2024

Abstract Adapting the coordination environment to influence electronic configuration of active sites represents an efficient approach for improving photocatalytic performance CO 2 reduction reaction (CO RR) but how execute it precisely remains challenging. Herein, heteroatom‐substitution in Ni‐porphyrin break symmetry Ni center is proposed be effective solution. Based on this, two symmetry‐breaking Ni‐porphyrins, namely Ni(Cl)ON 3 Por and Ni(Cl)SN , are designed successfully prepared. By theoretical calculation, found that efficiently regulates d orbital energy levels center. Furthermore, experimental findings jointly revealed Ni‐porphyrins facilitates generation highly reactive I species during catalytic process, effectively stabilizing reducing barrier formation key * COOH intermediate. As a result, gave production rates 24.7 38.8 mmol g −1 h as well selectivity toward 94.0% 96.4%, respectively, outperforming symmetric NiN 4 rate 6.6 82.8%). These offer microscopic insights into modulate activity by tuning rational design competent catalyst RR photocatalysis.

Language: Английский

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Multiple Heteroatom‐Hydrogen Bonds Bridging Electron Transport in Covalent Organic Framework‐Based Supramolecular System for Photoreduction of CO₂

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(31)

Published: June 7, 2023

Supramolecular systems consisting of covalent organic frameworks (COFs) and Ni complex are designed for robust photocatalytic reduction CO2 . Multiple heteroatom-hydrogen bonding between the COF is identified to play a decisive role in photoexcited electron transfer across liquid-solid interface. The diminution steric groups on or metal can optimize catalytic performance, which more attributable enhanced hydrogen-bond interaction rather than their intrinsic activity. photosystem with relatively strong strength hydrogen bonds exhibits remarkable -to-CO conversion, far superior photosystems supported atomic alone absence effect. Such bridging transport pathway confers supramolecular system high providing an avenue rationally design efficient steadily available photosystems.

Language: Английский

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Hierarchical S-scheme titanium dioxide@cobalt-nickel based metal–organic framework nanotube photocatalyst for selective carbon dioxide photoreduction to methane

Journal of Colloid and Interface Science, Journal Year: 2022, Volume and Issue: 630, P. 11 - 22

Published: Sept. 26, 2022

Language: Английский

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Synergetic effect of the interface electric field and the plasmon electromagnetic field in Au-Ag alloy mediated Z-type heterostructure for photocatalytic hydrogen production and CO2 reduction

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 331, P. 122700 - 122700

Published: March 27, 2023

Language: Английский

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