Atomic-level coordination structures meet graphitic carbon nitride (g-C3N4) for photocatalysis: Energy conversion and environmental remediation

Applied Catalysis B Environment and Energy, Год журнала: 2024, Номер unknown, С. 123683 - 123683

Опубликована: Янв. 1, 2024

Язык: Английский

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Tandem microplastic degradation and hydrogen production by hierarchical carbon nitride-supported single-atom iron catalysts

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

Опубликована: Окт. 10, 2024

Abstract Microplastic pollution, an emerging environmental issue, poses significant threats to aquatic ecosystems and human health. In tackling microplastic pollution advancing green hydrogen production, this study reveals a tandem catalytic degradation-hydrogen evolution reaction (MPD-HER) process using hierarchical porous carbon nitride-supported single-atom iron catalysts (FeSA-hCN). Through hydrothermal-assisted Fenton-like reactions, we accomplish near-total ultrahigh-molecular-weight-polyethylene degradation into C 3 -C 20 organics with 64% selectivity of carboxylic acid under neutral pH, leap beyond current capabilities in efficiency, selectivity, eco-friendliness, stability over six cycles. The system demonstrates versatility by degrading various daily-use plastics across different settings. mixture FeSA-hCN plastic products further achieves 42 μmol h ‒1 illumination, outperforming most existing photoreforming methods. This MPD-HER not only provides scalable economically feasible strategy combat but also contributes the economy, far-reaching implications for global sustainability initiatives.

Язык: Английский

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Multidimensional engineering of single-atom cobalt catalysts for ultrafast Fenton-like reactions

Nature Water, Год журнала: 2025, Номер 3(2), С. 211 - 221

Опубликована: Янв. 22, 2025

Язык: Английский

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Carbonaceous materials in structural dimensions for advanced oxidation processes

Chemical Society Reviews, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Catalytic active sites and mechanisms of various dimensional carbonaceous materials in activation oxidants towards advanced oxidant processes for wastewater/water treatment were reviewed.

Язык: Английский

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Macroporous Carbon-Nitride-Supported Transition-Metal Single-Atom Catalysts for Photocatalytic Hydrogen Production from Ammonia Splitting

ACS Catalysis, Год журнала: 2023, Номер 13(17), С. 11711 - 11722

Опубликована: Авг. 21, 2023

Ammonia (NH3) splitting to hydrogen (H2) is a promising route for on-site production of green energy; however, the application limited due high-cost noble-metal-based catalysts and high operating temperature endothermic nature. Herein, we develop series macroporous carbon nitride-supported single-atom transition metal (TMs-MCN, TMs: Co, Mn, Fe, Ni, Cu) catalyst panels solar light-driven photocatalytic gaseous NH3 splitting. Under ambient reaction conditions, optimized Ni-MCN shows an H2 rate 35.6 μmol g–1 h–1, much superior that MCN other TMs-MCN. Such enhanced photoactivity attributed presence Ni–N4 sites, which improve optical properties, accelerate charge carrier separation/transfer, boost kinetics catalysts. Density functional theory calculations further reveal sites can effectively modify electronic structure nitride. Compared with site possesses moderate binding strength lowest energy barrier facilitate formation key intermediates *NH + *H. These findings provide valuable guidelines rational design toward energy- cost-effective production.

Язык: Английский

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Atomically dispersed Co-Mn dual sites anchored in photoresponsive carbon nitride mediated peroxymonosulfate activation for elimination of petroleum hydrocarbon in water

Applied Catalysis B Environment and Energy, Год журнала: 2023, Номер 343, С. 123581 - 123581

Опубликована: Ноя. 28, 2023

Язык: Английский

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Electronic Structure and Functions of Carbon Nitride in Frontier Green Catalysis

Accounts of Chemical Research, Год журнала: 2024, Номер 57(16), С. 2303 - 2315

Опубликована: Авг. 6, 2024

ConspectusGraphitic carbon nitride-based materials have emerged as promising photocatalysts for a variety of energy and environmental applications owing to their "earth-abundant" nature, structural versatility, tunable electronic optical properties, chemical stability. Optimizing nitride's physicochemical properties encompasses approaches, including the regulation inherent defects, morphology control, heterostructure construction, heteroatom metal-atom doping. These strategies are pivotal in ultimately enhancing photocatalytic activities. Previous reviews with extensive examples mainly focused on synthesis, modification, application photocatalysis. However, there has been lack straightforward in-depth discussion understand characteristics functions various engineered nitrides well precise tailoring explain regularity specificity improved performance targeted systems. In past ten years, our group conducted investigations studies demonstrate close yet intricate relationship between structure nitride reactivity. Understanding nitride, different engineering strategies, is essential improvement processes from fundamental study practical applications.To this end, Account, we first delve into nature highlighting structures, band structure, density states, molecular orbitals, center, its functions, such charge distribution, internal electric field, external force. Subsequently, based recent research group, present detailed strategic modifications consequential impacts particularly intrinsic characteristics, performance. categorized follows: (i) component changing, which involves intralayer interface heterojunctions homojunctions, modulate band-edge potentials reactivity photoinduced electrons holes toward surface redox reactions; (ii) dimensional tuning, engineers influence electron transfer direction; (iii) defect introduces symmetry break framework, promote redistribution altering structure; (iv) anchoring single-atom metals facilitate orbital hybridization enhancement through unique metal-N coordination configurations. Finally, propose an appraisal prospects challenges manipulation characterization nitride. The integration

Язык: Английский

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Microenvironment Engineering of Heterogeneous Catalysts for Liquid-Phase Environmental Catalysis

Chemical Reviews, Год журнала: 2024, Номер 124(20), С. 11348 - 11434

Опубликована: Окт. 9, 2024

Environmental catalysis has emerged as a scientific frontier in mitigating water pollution and advancing circular chemistry reaction microenvironment significantly influences the catalytic performance efficiency. This review delves into engineering within liquid-phase environmental catalysis, categorizing microenvironments four scales: atom/molecule-level modulation, nano/microscale-confined structures, interface surface regulation, external field effects. Each category is analyzed for its unique characteristics merits, emphasizing potential to enhance efficiency selectivity. Following this overview, we introduced recent advancements advanced material system design promote (e.g., purification, transformation value-added products, green synthesis), leveraging state-of-the-art technologies. These discussions showcase was applied different reactions fine-tune regimes improve from both thermodynamics kinetics perspectives. Lastly, discussed challenges future directions engineering. underscores of intelligent materials drive development more effective sustainable solutions decontamination.

Язык: Английский

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Modulation of catalyst microenvironments in ZnIn2S4/g-C3N4 S-scheme heterojunction for ratio-tunable syngas production from CO2 photoreduction

Applied Catalysis B Environment and Energy, Год журнала: 2024, Номер unknown, С. 124724 - 124724

Опубликована: Окт. 1, 2024

Язык: Английский

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In situ single iron atom doping on Bi2WO6 monolayers triggers efficient photo-fenton reaction

Environmental Science and Ecotechnology, Год журнала: 2024, Номер 20, С. 100414 - 100414

Опубликована: Март 21, 2024

Developing an efficient photocatalytic system for hydrogen peroxide (H

Язык: Английский

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