g-C3N4-based S-scheme heterojunction photocatalysts

Science China Materials, Journal Year: 2024, Volume and Issue: 67(2), P. 444 - 472

Published: Jan. 24, 2024

Language: Английский

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Recent advances in g-C3N4-based direct Z-scheme photocatalysts for environmental and energy applications

Chinese Journal of Structural Chemistry, Journal Year: 2024, Volume and Issue: 43(2), P. 100214 - 100214

Published: Jan. 12, 2024

Language: Английский

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Account of doping photocatalyst for water splitting

CHINESE JOURNAL OF CATALYSIS (CHINESE VERSION), Journal Year: 2024, Volume and Issue: 60, P. 1 - 24

Published: May 1, 2024

Language: Английский

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g-C ₃ N ₄ Photocatalysts: Utilizing Electron–Hole Pairs for Boosted Redox Capability in Water Splitting

Energy Material Advances, Journal Year: 2023, Volume and Issue: 4

Published: Jan. 1, 2023

Since the first discovery of solar-driven water splitting catalyzed by TiO 2 semiconductors, extensive research works have been devoted over decades. Currently, design a photocatalyst with dual redox potential is prominent interest to fully utilize both photogenerated electrons and holes in reactions. Among all, coproduction H O from using metal-free carbon nitride (g-C 3 N 4 ) has viewed as rising star this field. However, hole-mediated oxidation reaction commonly recognized rate-determining step, which drastically leads poor overall efficiency. On top that, rapid recombination undesirable back appeared one challenging parts splitting. In review, up-to-date advances modified g-C -based photocatalysts toward efficient are summarized, mainly classified into structural defect engineering, single-atom catalysis, cocatalyst loading, heterojunction construction. This review also addresses underlying idea concept tackle aforementioned problem use emerging modification strategies, hence serving guiding for future research. Despite outstanding breakthrough thus far, critical recommendations related photocatalytic systems prospected pave way implementation practical energy production process.

Language: Английский

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Oxygen-Doped Porous g-C₃N₄ via Oxalic Acid-Assisted Thermal Polycondensation as a Visible Light-Driven Photocatalyst for Bisphenol A Degradation

ACS Applied Nano Materials, Journal Year: 2023, Volume and Issue: 6(18), P. 16567 - 16579

Published: Sept. 8, 2023

Graphitic phase carbon nitride (g-C3N4) demonstrates tremendous potential for photocatalytic degradation of organic pollutants, but its performance is severely limited by the high recombination photogenerated electron–hole pairs. This study introduces an innovative approach oxalic acid-assisted thermal polycondensation to construct a series oxygen-doped porous g-C3N4 (OCN) nanostructured materials, which simultaneously utilizes heat-induced foaming mechanism acid achieve element doping modification. The results indicate that modified OCN-1.5 exhibited optimal activity. Under visible light conditions, efficiency catalyst toward bisphenol A (BPA, 30 mg L–1) reached 82.55% (240 min irradiation). represents significant improvement 60% compared traditional catalyst. as follows: on one hand, oxygen atoms alter charge distribution and symmetry g-C3N4, thereby enhancing separation carriers. Furthermore, under irradiation, it facilitates formation conjugated delocalized systems associated with e– h+ surface, leading accelerated mineralization OCN BPA at interface. Additionally, •O2– radicals generated from interfacial reactions can also directly oxidize simultaneously. On other construction nanostructure provides larger specific surface area channels diffusion carriers, capture transfer. Moreover, this structure offers more active sites adsorption pollutants. Therefore, synthetic strategy proposed in overcomes long-standing aggregation issue synthesis providing perspective scalable preparation high-performance photocatalysts removal

Language: Английский

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Hydrothermal synthesis of (m-t)BiVO4/g-C3N4 heterojunction for enhancement in photocatalytic degradation of imidacloprid

Journal of environmental chemical engineering, Journal Year: 2023, Volume and Issue: 11(5), P. 111138 - 111138

Published: Sept. 27, 2023

Language: Английский

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Surface plasmon resonance effects of Ag@ZnO core–shell nanostructure in UV and visible light for photodiode applications

Journal of the American Ceramic Society, Journal Year: 2024, Volume and Issue: 107(5), P. 3390 - 3402

Published: Jan. 19, 2024

Abstract Herein, Ag@ZnO core–shell nanostructures were prepared via the wet chemical method and then dissolved in methanol drop cast onto a p–Si wafer. Experimental current–voltage measurements of Ag@ZnO/p–Si heterojunction device investigated under both visible UV illumination 365 395 nm. The photocurrent, responsivity, detectivity, on/off ratio found to be dependent on light intensity wavelength light. low photocurrent at intensities its rapid increase high was attributed recombination electrons holes also presence traps intensities. responsivity detectivity photodiode reach 1.32 A/W 5.47 × 10 11 Jones, respectively On contrary, performance explained by surface plasmon resonance between Ag ZnO.

Language: Английский

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Recent advances, synthesis, modifications and photogenerated carrier dynamics of g-C3N4 for photocatalytic water splitting

International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: 100, P. 79 - 128

Published: Dec. 21, 2024

Language: Английский

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Accelerated Electron Mobility in Layered KCa₂Nb₃O₁₀ via Adsorption-Photodeposition Ag Nanoparticles at the Layer Side

ACS Materials Letters, Journal Year: 2024, Volume and Issue: unknown, P. 3505 - 3513

Published: July 8, 2024

Language: Английский

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Synergistic Effect of BiVO4/P-g-C3N4 Heterojunction with Enhanced Optoelectronic Properties on Synthetic Colorants under Visible Light

Colorants, Journal Year: 2023, Volume and Issue: 2(2), P. 426 - 442

Published: June 8, 2023

Environmental remediation in the presence of robust semiconductor photocatalysts by utilizing renewable energy sources is keen interest among researchers. In this study, we synthesize a BiVO4/P-g-C3N4 heterojunction photocatalytic system through hydrothermal route followed total-solvent evaporation method. The optical and electronic properties as-prepared are characterized via various spectroscopic techniques. Rhodamine B (RhB) Congo Red (CR) used as synthetic colorants to evaluate performances BiVO4/P-g-C3N4. addition, chemical environment photocatalyst its mechanistic pathways confirmed X-ray photoelectron spectroscopy electrochemical Mott–Schottky analysis. shows higher photodegradation (96.94%) mixed dyes under simulated solar-light irradiation. as-synthesized significantly promotes quick separation photoexcited carriers due excellent synergetic properties, extended light absorption, photoelectrochemical response. Furthermore, possible type-II charge transfer mechanism adopted for after investigating band potentials, active species, carrier migration over interface.

Language: Английский

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