The progress of g-C3N4 in photocatalytic H2 evolution: From fabrication to modification

Coordination Chemistry Reviews, Journal Year: 2023, Volume and Issue: 500, P. 215489 - 215489

Published: Nov. 2, 2023

Language: Английский

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Photogenerated charge carriers in photocatalytic materials for solar hydrogen evolution

Current Opinion in Chemical Engineering, Journal Year: 2025, Volume and Issue: 47, P. 101087 - 101087

Published: Jan. 21, 2025

Language: Английский

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Enhanced Charge Separation in Single Atom Cobalt Based Graphitic Carbon Nitride: Time Domain Ab Initio Analysis

The Journal of Physical Chemistry Letters, Journal Year: 2024, Volume and Issue: 15(8), P. 2202 - 2208

Published: Feb. 19, 2024

In recent years, single atom catalysts have been at the forefront of energy conversion research, particularly in field catalysis. Carbon nitrides offer great potential as hosts for stabilizing metal atoms due to their unique electronic structure. We use ab initio nonadiabatic molecular dynamics study photoexcitation cobalt based graphitic carbon nitride. The results elucidate positive effect doped on structure GCN. Cobalt doping produces filled midgap states that serve oxidation centers, advantageous various redox reactions. presence enables harvesting longer wavelength photons, thereby extending absorption range solar light. Although accelerates charge relaxation overall, recombination is significantly slower than separation, creating beneficial conditions catalysis applications. simulations reveal detailed microscopic mechanism underlying improved performance system atomic defects and demonstrate an effective separation strategy construct highly efficient stable photocatalytic two-dimensional materials.

Language: Английский

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Recent Advances in Graphene-Based Single-Atom Photocatalysts for CO2 Reduction and H2 Production

Catalysts, Journal Year: 2024, Volume and Issue: 14(6), P. 343 - 343

Published: May 24, 2024

The extensive use of single-atom catalysts (SACs) has appeared as a significant area investigation in contemporary study. catalyst, characterized by its maximum atomic proficiency and great discernment the transition-metal center, unique combination benefits from both heterogeneous homogeneous catalysts. Consequently, it effectively bridges gap between these two types catalysts, leveraging their distinctive features. utilization SACs immobilized on graphene substrates garnered considerable interest, primarily because capacity to facilitate selective efficient photocatalytic processes. This review aims comprehensively summarize progress potential uses made carbon dioxide (CO2) reduction hydrogen (H2) generation. focus is contribution converting solar energy into chemical energy. present study represents various preparation methods characterization approaches graphene-based photocatalyst investigates detailed mechanisms underlying processes discusses recent studies that have demonstrated remarkable H2 production rates through photocatalysts. Additionally, pivotal roleof theoretical simulations, likedensity functional theory (DFT), understand structural relationships are discussed. revolutionize solar-to-chemical conversion CO2 underscored, along with addressing challenges outlining future directions for this developing By shedding light contributes collective pursuit sustainable strategies mitigate global climate crisis.

Language: Английский

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Metal-single-atom anchored highly crystalline graphitic carbon nitride in photocatalysis

Journal of Material Science and Technology, Journal Year: 2025, Volume and Issue: unknown

Published: March 1, 2025

Language: Английский

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Computational and experimental insights into single-atom catalysts supported on g-C3N4: Unraveling the superior stability and catalytic activity of Rh in hydroformylation reactions

Applied Surface Science, Journal Year: 2025, Volume and Issue: 698, P. 163050 - 163050

Published: April 6, 2025

Language: Английский

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Photocatalytic aqueous environmental remediation via two-dimensional carbon nitride nanosheets

Surfaces and Interfaces, Journal Year: 2023, Volume and Issue: 44, P. 103717 - 103717

Published: Dec. 5, 2023

Graphitic carbon nitride (GCN) has garnered considerable attention across diverse fields, particularly in photocatalysis for energy and environmental applications, due to its unique physicochemical properties. Among the various structural engineering strategies applied GCN, two-dimensional (2D) nanosheet design stands out as a fascinating direction 2D geometric advantages. This review explicitly explores synthetic (classified bottom-up top-down) modification methods of GCN-NS matrix their based composites, well application photocatalytic remediation aqueous pollutants. The features these formation are first compared. Different GCN-NS, such surface modification, crystal structure design, doping heterojunction construction, summarized. Furthermore, structure-activity relationship water treatments regarding light absorption, carrier transport catalytic reaction paths is discussed. Lastly, developed perspectives described, including challenge GCN-NS-based materials. We expect this provide guidelines inspirations preparing, modifying, utilizing GCN materials field.

Language: Английский

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Single Atom Catalysts for Photoelectrochemical Water Splitting

ChemCatChem, Journal Year: 2023, Volume and Issue: 15(21)

Published: Sept. 21, 2023

Abstract Single atom catalysts (SACs) have attracted increasing attention in electrocatalysis due to their unprecedented catalytic activity with excellent atomic utilization efficiency derived from unique electronic states and coordination environments. In photoelectrochemical (PEC) water splitting, atomically dispersed metal anchored photoelectrodes offer the breakthrough outperform conventional thin‐film PEC by enlarging sites facilitating photogenerated charge carrier kinetics. Herein, we present a comprehensive review of SAC‐incorporated for efficient splitting. Firstly, representative characterization techniques identification SACs investigations respect kinetics photon‐to‐current will be discussed. Then, introduce state‐of‐the‐art PEC‐SACs classified into noble metal, non‐noble dual SACs. Finally, critical outlooks realize full potential photoelectrocatalysis highlighted.

Language: Английский

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Pushing the Operational Barriers for g-C3N4: A Comprehensive Review of Cutting-Edge Immobilization Strategies

Catalysts, Journal Year: 2024, Volume and Issue: 14(3), P. 175 - 175

Published: Feb. 28, 2024

This comprehensive review explores recent advancements in immobilization strategies for graphitic carbon nitride (g-C3N4), a metal-free photocatalyst that has gained significant attention its optical and physicochemical properties comparable to traditional photocatalysts like TiO2. However, critical challenge regarding their application emerged from the difficulty of recovery due powdery nature. Therefore, several alternatives are being explored immobilize this material, facilitating reuse. systematically categorizes various physical chemical techniques, providing an in-depth analysis advantages, drawbacks, applications. Techniques such as encapsulation, electrospinning, casting, coating, along with adaptations g-C3N4, thoroughly examined. Additionally, impact these on enhancing photocatalytic efficiency operational stability particularly environmental applications, is also assessed. Thus, aims provide valuable insights guide future research realms photocatalysis remediation. The contributes understanding how can optimize performance furthering potential applications sustainable efficient solutions.

Language: Английский

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Lighting the Path to Practical Applications of Single‐Atom Catalysts in Photocatalysis: The Role of Platinum Group Single Atoms in Enhancing Catalytic Activity

Solar RRL, Journal Year: 2025, Volume and Issue: unknown

Published: March 4, 2025

Single‐atom catalysts (SACs) show promise because of their efficient use precious metals, unique coordination and electronic structures, excellent tunability. Photocatalysis can harvest solar energy to drive energetically unfavorable reactions under mild conditions, offering a sustainable alternative energy‐intensive reactions. However, the efficiency photocatalysis is limited by poor spectrum utilization rapid charge recombination. Integrating single atoms into semiconductor photocatalysts promising route address these limitations. Mechanistic understanding single‐atom crucial for developing as they guide effective material design. This work provides an overview current knowledge on platinum group SACs applied photocatalytic applications with focus role in The review begins summary advantages metal well common structures. A concise synthesis methods then provided, followed comprehensive characterization SAC structure, photoelectronic properties, mechanisms action. Next, improving general processes specific are discussed. Finally, future outlooks development included further advancements field.

Language: Английский

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