Tuning of graphitic carbon nitride (g-C3N4) for photocatalysis: A critical review

Arabian Journal of Chemistry, Год журнала: 2023, Номер 16(3), С. 104542 - 104542

Опубликована: Янв. 5, 2023

Graphitic carbon nitride (g-C3N4) is a remarkable semiconductor catalyst that has attracted widespread attention as visible light photo-responsive, metal-free, low-cost photocatalytic material. Pristine g-C3N4 suffers fast recombination of photogenerated electron-hole pairs, low surface area, and insufficient absorption, resulting in efficiency. This review presents the recent progress, perspectives, persistent challenges development g-C3N4-based materials. Several approaches employed to improve absorption materials including metal non-metal doping, co-doping, heterojunction engineering have been extensively discussed. These approaches, general, were found decrease material's bandgap, increase reduce charge carrier recombination, promote thereby enhancing overall performance. The material widely used for different applications such hydrogen production, water splitting, CO2 conversion, purification. work also identified various limitations weaknesses associated with hinders its maximum utilization under illumination presented state-of-the-art solutions reported recently. summary this would add an invaluable contribution photocatalysis research facilitate efficient light-responsive semiconducting

Язык: Английский

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Recent Advances in g-C3N4-Based Materials and Their Application in Energy and Environmental Sustainability

Molecules, Год журнала: 2023, Номер 28(1), С. 432 - 432

Опубликована: Янв. 3, 2023

Graphitic carbon nitride (g-C3N4), with facile synthesis, unique structure, high stability, and low cost, has been the hotspot in field of photocatalysis. However, photocatalytic performance g-C3N4 is still unsatisfactory due to insufficient capture visible light, surface area, poor electronic conductivity, fast recombination photogenerated electron-hole pairs. Thus, different modification strategies have developed improve its performance. In this review, properties preparation methods are systematically introduced, various approaches, including morphology control, elemental doping, heterojunction construction, nanomaterials, discussed. Moreover, applications energy environmental sustainability summarized, such as hydrogen generation, CO2 reduction, degradation contaminants recent years. Finally, concluding remarks perspectives on challenges, suggestions for exploiting g-C3N4-based photocatalysts presented. This review will deepen understanding state art g-C3N4, fabrication, modification, application sustainability.

Язык: Английский

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Review of hydrogen–gasoline SI dual fuel engines: Engine performance and emission

Energy Reports, Год журнала: 2023, Номер 9, С. 4547 - 4573

Опубликована: Март 29, 2023

Rapid depletion of conventional fossil fuels and increasing environmental concern are demanding an urgent carry out for research to find alternate fuel which meets the demand with minimum impacts. Hydrogen is considered as one important in near future above alarming problems. Hydrogen–gasoline dual engines use hydrogen primary gasoline secondary fuel. In this review paper, combustion performance, emission, cyclic variation characteristics a hydrogen–gasoline engine have been critically analyzed. According scientific literature, good thermal efficiency at low partial loads, but performance deteriorates high loads. direct injection port optimum configuration operating on gasoline. This shows superior result mitigating abnormal combustion, experiences NOx emission. Employing EGR showed maximum reduction 77.8% emission flowrate 18%, further increment leads instability. An overview production carbon footprint related also included. paper aims provide comprehensive findings from past works associated approach spark ignition engine.

Язык: Английский

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Rational design 2D/3D MoS2/In2O3 composites for great boosting photocatalytic H2 production coupled with dye degradation

Journal of the Taiwan Institute of Chemical Engineers, Год журнала: 2023, Номер 146, С. 104862 - 104862

Опубликована: Апрель 8, 2023

Язык: Английский

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MoS₂-Based Nanocomposites for Photocatalytic Hydrogen Evolution and Carbon Dioxide Reduction

ACS Omega, Год журнала: 2023, Номер 8(29), С. 25649 - 25673

Опубликована: Июль 12, 2023

Photocatalysis is a facile and sustainable approach for energy conversion environmental remediation by generating solar fuels from water splitting. Due to their two-dimensional (2D) layered structure excellent physicochemical properties, molybdenum disulfide (MoS2) has been effectively utilized in photocatalytic H2 evolution reaction (HER) CO2 reduction. The efficiency of MoS2 greatly depends on the active edge sites present structure. Modifications like reducing layer numbers, creating defective structures, adopting different morphologies produce more unsaturated S atoms as sites. Hence, acts cocatalyst nanocomposites/heterojunctions facilitate photogenerated electron transfer. This review highlights role nanocomposites activity described comprehensively binary (with metal oxide, carbonaceous materials, sulfides, metal-organic frameworks) ternary composites MoS2. Photocatalytic reduction complex challenging process that demands an efficient light-responsive semiconductor catalyst tackle thermodynamic kinetic factors. using emerging topic would be cost-effective substitute noble catalysts. Herein, we also exclusively envisioned possibility its this area. expected furnish understanding diverse roles fuel generation, thus endorsing interest utilizing unique create nanostructures future applications.

Язык: Английский

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Visible-light-driven photodegradation of methylene blue and doxycycline hydrochloride by waste-based S-scheme heterojunction photocatalyst Bi5O7I/PCN/tea waste biochar

Chemosphere, Год журнала: 2023, Номер 347, С. 140694 - 140694

Опубликована: Ноя. 15, 2023

Язык: Английский

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Charge transfer in TiO₂-based photocatalysis: fundamental mechanisms to material strategies

Nanoscale, Год журнала: 2024, Номер 16(9), С. 4352 - 4377

Опубликована: Янв. 1, 2024

The review highlights charge transfer, improved photocatalytic performance, and possible photocatalysis schemes in TiO 2 -based composites. It also addresses perspectives challenges transfer mechanisms for photocatalysis.

Язык: Английский

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A review of hydrogen production and storage materials for efficient integrated hydrogen energy systems

Energy Science & Engineering, Год журнала: 2024, Номер 12(5), С. 1934 - 1968

Опубликована: Март 6, 2024

Abstract The rapidly growing global need for environmentally friendly energy solutions has inspired extensive research and development efforts aimed at harnessing the potential of hydrogen energy. Hydrogen, with its diverse applications relatively straightforward acquisition, is viewed as a promising carrier capable tackling pressing issues, such carbon emissions reduction storage. This study conducts preliminary investigation into effective generation storage systems, encompassing methods like water electrolysis, biomass reforming, solar‐driven processes. Specifically, focuses on assessing nanostructured catalysts innovative materials to enhance productivity versatility systems. Additionally, utilization novel not only improves capacity safety but also opens up possibilities inventive applications, including on‐demand release efficient transportation. Furthermore, critical factors catalyst design, material engineering, system integration, technoeconomic viability are examined identify challenges chart paths future advancements. emphasizes importance fostering interdisciplinary collaborations advance technologies contribute sustainable future.

Язык: Английский

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Donor–acceptor hetero[6]radialene-based three-dimensional covalent organic frameworks for organic pollutant adsorption, photocatalytic degradation, and hydrogen production activity

Journal of Materials Chemistry A, Год журнала: 2024, Номер 12(23), С. 14005 - 14021

Опубликована: Янв. 1, 2024

By investigating the effects of electron donor topology and hetero[6]radialene structure on 3D COF photocatalytic activity, a twisted BF was found to improve organic pollutant degradation water hydrogen production.

Язык: Английский

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A review on hydrogen production using decorated metal-organic frameworks by electrocatalytic and photocatalytic water splitting

Fuel, Год журнала: 2025, Номер 387, С. 134416 - 134416

Опубликована: Янв. 21, 2025

Язык: Английский

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