Large electronegativity differences between adjacent atomic sites activate and stabilize ZnIn2S4 for efficient photocatalytic overall water splitting

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Jan. 6, 2024

Abstract Photocatalytic overall water splitting into hydrogen and oxygen is desirable for long-term renewable, sustainable clean fuel production on earth. Metal sulfides are considered as ideal hydrogen-evolved photocatalysts, but their component homogeneity typical sulfur instability cause an inert production, which remains a huge obstacle to water-splitting. Here, distortion-evoked cation-site doping of ZnIn 2 S 4 (D-O-ZIS) creates significant electronegativity differences between adjacent atomic sites, with 1 sites being electron-rich electron-deficient in the local structure –S –O sites. The strong charge redistribution character activates stable reactions at avoids common issue metal sulfide photocatalysis, while favor adsorption/desorption hydrogen. Consequently, water-splitting reaction has been realized D-O-ZIS remarkable solar-to-hydrogen conversion efficiency 0.57%, accompanying ~ 91% retention rate after 120 h photocatalytic test. In this work, we inspire universal design from perspective activate stabilize photocatalysts efficient

Language: Английский

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Constructing fast charge separation of ZnIn2S4 @CuCo2S4 p-n heterojunction for efficient photocatalytic hydrogen energy recovery from quinolone antibiotic wastewater

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 341, P. 123284 - 123284

Published: Sept. 9, 2023

Language: Английский

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Artificial Photosynthetic System with Spatial Dual Reduction Site Enabling Enhanced Solar Hydrogen Production

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(9)

Published: Nov. 28, 2023

Abstract Although S‐scheme artificial photosynthesis shows promise for photocatalytic hydrogen production, traditional methods often overly concentrate on a single reduction site. This limitation results in inadequate redox capability and inefficient charge separation, which hampers the efficiency of evolution reaction. To overcome this limitation, double system is proposed that leverages dual sites, thereby preserving energetic photo‐electrons holes to enhance apparent quantum efficiency. The design features junction consisting CdS nanospheres decorated with anatase TiO 2 nanoparticles coupled graphitic C 3 N 4 . as‐prepared catalyst exhibits rate 26.84 mmol g −1 h an 40.2% at 365 nm. enhanced ascribed efficient separation transport induced by S‐scheme. Both theoretical calculations comprehensive spectroscopy tests (both situ ex situ) affirm across interface. Moreover, substituting reduction‐type other similar sulfides like ZnIn S , ZnS, MoS In further confirms feasibility configuration. findings provide pathway designing more effective photosynthetic systems, opening up fresh perspectives enhancing performance.

Language: Английский

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2D semiconductor nanosheets for solar photocatalysis

EcoEnergy, Journal Year: 2023, Volume and Issue: 1(2), P. 248 - 295

Published: Dec. 1, 2023

Abstract In the advancing world of graphene, highly anisotropic 2D semiconductor nanosheets, notable for their nanometer‐scale thickness, have emerged as a leading innovation, displaying immense potential in exploration renewable and clean energy production. These garnered significant attention from researchers. The nanosheets are marked by extraordinary electronic, optical, chemical attributes, positioning them attractive foundational components heterogeneous photocatalysts. This review diligently summarizes both seminal work ongoing developments pertaining to application solar within context photocatalysis. We begin detailing distinctive properties concentrating on pivotal roles augmenting photocatalytic efficiency, explaining intrinsic mechanisms that govern migration rate photogenerated carriers material's surface. Subsequently, we delineate methods employed synthesize typical nanosheets. alignment with overarching objective expanding light absorption capacity accelerating charge transfer, also examine current research hybridization techniques involving materials varied dimensions, well deployment diverse applications. conclude identifying promising avenues challenges await further this burgeoning field.

Language: Английский

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Construction of S-scheme heterojunction catalytic nanoreactor for boosted photothermal-assisted photocatalytic H2 production

Applied Surface Science, Journal Year: 2023, Volume and Issue: 642, P. 158648 - 158648

Published: Oct. 10, 2023

Language: Английский

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Recent advances in efficient and scalable solar hydrogen production through water splitting

Carbon Neutrality, Journal Year: 2023, Volume and Issue: 2(1)

Published: Sept. 11, 2023

Abstract Solar hydrogen production through water splitting is the most important and promising approach to obtaining green energy. Although this technology developed rapidly in last two decades, it still a long way from true commercialization. In particular, efficiency scalability of solar have attracted extensive attention field basic research. Currently, three studied routes for include photocatalytic (PC), photoelectrochemical (PEC), photovoltaic-electrochemical (PV-EC) splitting. review, we briefly introduce motivation developing energy, then summarize influential breakthroughs on production, especially those cases that are instructive practical applications. Finally, analyze challenges facing industrialization provide insights accelerating transition research Overall, review can meaningful reference addressing issues improvement scale expansion thereby promoting innovation growth renewable energy industry. Graphical

Language: Английский

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Tracking Heterogeneous Interface Charge Reverse Separation in SrTiO₃/NiO/NiS Nanofibers with In Situ Irradiation XPS

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(44)

Published: Sept. 1, 2023

Abstract Photocatalytic conversion of H 2 O and CO into solar fuels is considered to be a green renewable technology while photocatalytic performance hampered by the severe recombination photogenerated electron–hole pairs. Drawing inspiration from concepts electrons transfer layer (ETL) holes (HTL) in perovskite cells, multicomponent photocatalyst SrTiO 3 /NiO/NiS that incorporates p–n heterojunction Schottky junction constructed for converting energy easily storable fuels. The NiS NiO play roles analogy ETL HTL which accomplishes reverse migration holes, accordingly, exhibits noticeable enhancement performance. However, lack direct observation charge pathways complex photocatalysts makes it challenging thoroughly investigate their catalytic mechanisms. Herein, situ irradiation X‐ray photoelectron spectroscopy (ISI–XPS) employed track charges between microscopic heterogeneous interfaces, thereby providing comprehensive elucidation mechanism formation process integrating photoelectrochemical tests. This study not only serves as compelling evidence capability ISI–XPS directly accurately tracking but also an intriguing highlight within catalyst design strategy.

Language: Английский

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Gradient tungsten-doped Bi3TiNbO9 ferroelectric photocatalysts with additional built-in electric field for efficient overall water splitting

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

Published: Dec. 1, 2023

Bi3TiNbO9, a layered ferroelectric photocatalyst, exhibits great potential for overall water splitting through efficient intralayer separation of photogenerated carriers motivated by depolarization field along the in-plane a-axis. However, poor interlayer transport out-of-plane c-axis, caused significant barrier between layers, leads to high probability carrier recombination and consequently results in low photocatalytic activity. Here, we have developed an photocatalyst consisting Bi3TiNbO9 nanosheets with gradient tungsten (W) doping c-axis. This generation additional electric c-axis simultaneously enhances magnitude within layers a-axis due strengthened structural distortion. The combination built-in polarization can effectively facilitate anisotropic migration electrons holes basal {001} surface lateral {110} nanosheets, respectively, enabling desirable spatial carriers. Hence, W-doped Rh/Cr2O3 cocatalyst achieves durable feature, thereby providing effective pathway designing excellent photocatalysts.

Language: Английский

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Understanding Bridging Sites and Accelerating Quantum Efficiency for Photocatalytic CO2 Reduction

Nano-Micro Letters, Journal Year: 2023, Volume and Issue: 16(1)

Published: Nov. 6, 2023

We report a novel double-shelled nanoboxes photocatalyst architecture with tailored interfaces that accelerate quantum efficiency for photocatalytic CO

Language: Английский

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

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: unknown, P. 123683 - 123683

Published: Jan. 1, 2024

Language: Английский

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