Single-atom photocatalysis: A new frontier toward solar energy conversion

Molecular Catalysis, Journal Year: 2025, Volume and Issue: 575, P. 114892 - 114892

Published: Feb. 5, 2025

Language: Английский

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Atomically Precise Metal Nanocluster-Mediated Solar Hydrogen Production

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 7, 2025

Atomically precise metal nanoclusters (NCs) stand out within nanomaterials due to the distinctive atomic stacking configuration, discrete energy band, quantum confinement effect, and enriched catalytic centers, positioning them as promising substitutes for conventional photosensitizers in solar absorption utilization. However, light-induced poor stability ultrashort carrier lifetime of NCs well difficulties modulating charge migration collectively constrain their potential applications photoredox catalysis. In this work, we conceptually construct NC artificial photosystems by electrostatically self-assembling l-glutathione (GSH)-capped Au25(GSH)18 onto transition chalcogenide (TMC) substrates (CdS, Zn0.5Cd0.5S, ZnIn2S4) at ambient conditions. Benefiting from advantageous photosensitization effect Au25@(GSH)18 NCs, these self-assembled TMCs/Au25@(GSH)18 heterostructures exhibit significantly enhanced photocatalytic hydrogen production performance (λ > 420 nm). This universal photoactivity enhancement is predominantly attributed suitable level alignment between TMCs, which considerably enhances interfacial transfer effectively extends lifetime. addition, mechanism determined. work would spark continued interest crafting diverse atomically systems toward solar-to-hydrogen conversion.

Language: Английский

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Strategy for photogenerated electron and hole segregation on the (001) facets of multilayer erythrocyte-like BiOCl/BiBTC

Molecular Catalysis, Journal Year: 2025, Volume and Issue: 573, P. 114853 - 114853

Published: Jan. 18, 2025

Language: Английский

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Z-scheme Zr/Ti-ZBPU heterojunction for enhanced Cr(VI) reduction and antibacterial remediation

Molecular Catalysis, Journal Year: 2025, Volume and Issue: 576, P. 114905 - 114905

Published: Feb. 18, 2025

Language: Английский

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Selective Photocatalytic Oxidative Ethane Dehydrogenation on AuPd Nanoparticle-Decorated TiO₂

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: 17(9), P. 14119 - 14128

Published: Feb. 24, 2025

Photocatalytic oxidative dehydrogenation of ethane offers a promising approach for producing ethylene under mild conditions. However, achieving high yields and selectivity is challenging due to the C-H bond activation barrier in tendency overoxidation CO2. In this study, we demonstrate that TiO2 with highly dispersed AuPd nanoparticles serves as an efficient selective photocatalyst O2 flow reactor. The optimized Au0.33Pd0.67/TiO2 achieves up 20.3 mmol g-1 h-1 91.5% selectivity, resulting 5.9% apparent quantum efficiency at 365 nm. Detailed characterizations reveal Au0.33Pd0.67 cocatalyst plays crucial role facilitating photocarrier separation regulating formation active oxygen species. effectively activates lattice TiO2, which localized oxidant promote dissociation through photoassisted Mars-van Krevelen mechanism. Additionally, facilitates dioxygen reduction ensures rapid replenishment lattice, thereby yield formation. This work provides valuable insights designing composite photocatalysts dehydrogenation.

Language: Английский

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Mechanistic insights into the enhanced photocatalytic efficiency of MoS₂-tuned DyFeO₃ heterojunction for pollutants degradation

Nanoscale, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

In this study, DyFeO3-MoS2 heterojunction nanocomposites were synthesized by integrating porous DyFeO3 nanoparticles (an n-type semiconductor) with MoS2 nanosheets (a p-type semiconductor). The resulting p-n substantially improved the photocatalytic efficiency for degrading methylene blue (MB) and levofloxacin (LFX). This design introduces a built-in electric field at interface, promoting efficient charge separation suppressing electron-hole recombination, thereby significantly enhancing performance under solar irradiation compared to alone. Characterization studies, including XRD, FESEM, TEM, XPS, UV-visible absorbance, photoluminescence, Mott-Schottky analysis, confirmed nanocomposites' crystalline structure, well-dispersed nanosheets, oxygen vacancies, enhanced visible light absorption, favorable band positions. incorporation of increased separation, surface area mitigating aggregation, leading higher degradation rates. Among tested compositions, (80 : 20) nanocomposite, containing 20 wt% MoS2, exhibited highest efficiencies, 96.5% MB 88.7% LFX. Further analyses, activation energy determination, quantum yield measurement, scavenger tests, reusability assessments, optimized nanocomposite's durability. reduced energies high yields (35.5% MB, 25.8% LFX) indicate photon conversion radical generation, superoxide radicals (˙O2-) identified as primary reactive species. Stability tests revealed over 85% retention activity after four cycles, underscoring composite's robustness. Moreover, mechanism key insights into pathways pollutants. investigation demonstrates viable solar-driven solution pollutant in wastewater treatment incorporating nanostructures.

Language: Английский

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Photosensitization of transition metal chalcogenide with metal nanoclusters for boosted photocatalysis

Molecular Catalysis, Journal Year: 2025, Volume and Issue: 581, P. 115149 - 115149

Published: April 22, 2025

Language: Английский

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Silicalite-1 confined ultrafine nickel nanocrystals for efficient photothermal catalytic methane dry reforming

Molecular Catalysis, Journal Year: 2025, Volume and Issue: 573, P. 114844 - 114844

Published: Jan. 15, 2025

Language: Английский

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Assembling Giant Nanoclusters as Heterogeneous Catalysts for Effectively Converting CO₂ to CO Under Visible Light

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 9, 2025

Abstract Heterometallic lanthanide‐transition metal (3d‐4f) nanoclusters with well‐defined structures and multiple active sites are excellent vehicles for achieving efficient catalysis studying heterometallic synergism. In this work, two closely related yet different high‐nuclearity nanoclusters, 72‐nuclear {Ni 28 RE 44 } ( 1 , = Pr, Nd, Sm, Eu, Gd) 111‐nuclear 48 La 63 2 ), synthesized using a mixed‐ligand strategy. Importantly, the crystal solids of these giant coordination clusters insoluble when soaking in H O/CH 3 CN can be used as heterogeneous catalysts visible‐light‐driven catalytic conversion CO to CO. Cluster exhibits maximum production rate 4800 µmol g −1 h selectivity 92% over . Furthermore, properties investigated rare earths cluster series, found that 1‐Eu exhibited superior performance under identical conditions, likely due lower reduction potential europium ions. This study represents first report 3d‐4f photocatalytic reaction provides reference

Language: Английский

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Lattice stress modulation of TiO2 photocatalyst for enhanced selective oxidation of benzyl alcohol

Molecular Catalysis, Journal Year: 2025, Volume and Issue: 575, P. 114912 - 114912

Published: Feb. 12, 2025

Language: Английский

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