Noble‐Metal‐Free High‐Entropy Alloy Nanoparticles for Efficient Solar‐Driven Photocatalytic CO₂ Reduction

Advanced Materials, Год журнала: 2024, Номер 36(26)

Опубликована: Апрель 9, 2024

Metal nanoparticle (NP) cocatalysts are widely investigated for their ability to enhance the performance of photocatalytic materials; however, practical application is often limited by inherent instability under light irradiation. This challenge has catalyzed interest in exploring high-entropy alloys (HEAs), which, with increased entropy and lower Gibbs free energy, provide superior stability. In this study, 3.5 nm-sized noble-metal-free NPs composed a FeCoNiCuMn HEA successfully synthesized. With theoretic calculation experiments, electronic structure augmenting catalytic CO

Язык: Английский

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Active Hydrogen-Switchable Dynamic Oxygen Vacancies in MoO_3–x upon Ru Nanoparticle Decoration for Boosting Photocatalytic Ammonia Synthesis Performance

ACS Catalysis, Год журнала: 2024, Номер 14(8), С. 5696 - 5709

Опубликована: Апрель 1, 2024

Simultaneous promotion of N2 adsorption and NH3 desorption, which is referred to as breaking the scaling relationship, a major challenge in photocatalytic ammonia synthesis reaction. Herein, we have successfully developed an active hydrogen (H*)-switchable dynamic oxygen vacancy (OV) evolution strategy for solving this problem on MoO3–x decorated by Ru nanoparticles (Ru/MoO3–x). In strategy, H* drives cyclic OVs between initial state Ru/MoO3–x intermediate Ru/MoO3–xNy, exhibit strong capabilities respectively. The combination situ characterization DFT calculation reveals that interaction induces spontaneous formation whereas nitrogen species filling promotes spillover from MoO3–x, thereby accelerating hydrogenation lattice N desorption NH3. As result, 6.5 wt % achieves production rate 192.38 μmol·g–1·h–1, 2.68-fold higher than pristine MoO3–x. Besides, nitrate reduction nitric oxide synthesize further verified exhibited performance 370 220 This study opens avenue catalytic reaction with relationship.

Язык: Английский

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Cs3Bi2Br9 nanoparticles decorated C3N4 nanotubes composite photocatalyst for highly selective oxidation of benzylic alcohol

Journal of Colloid and Interface Science, Год журнала: 2024, Номер 672, С. 600 - 609

Опубликована: Июнь 5, 2024

Язык: Английский

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Photocatalytic hydrogen production from seawater by TiO2/RuO2 hybrid nanofiber with enhanced light absorption

Journal of Colloid and Interface Science, Год журнала: 2023, Номер 654, С. 1010 - 1019

Опубликована: Окт. 21, 2023

Язык: Английский

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Twin boundary defect engineering in Au cocatalyst to promote alcohol splitting for coproduction of H2 and fine chemicals

Journal of Colloid and Interface Science, Год журнала: 2023, Номер 657, С. 819 - 829

Опубликована: Дек. 1, 2023

Язык: Английский

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Defects of Metal Halide Perovskites in Photocatalytic Energy Conversion: Friend or Foe?

Advanced Science, Год журнала: 2024, Номер 11(29)

Опубликована: Июнь 3, 2024

Abstract Photocatalytic solar‐to‐fuel conversion over metal halide perovskites (MHPs) has recently attracted much attention, while the roles of defects in MHPs are still under debate. Specifically, mainstream viewpoint is that detrimental to photocatalytic performance, some recent studies show certain types contribute photoactivity enhancement. However, a systematic summary why it contradictory and how affect performance lacking. In this review, innovative MHP photocatalysts highlighted. First, origins elaborated, followed by clarifying benefits including optical absorption, charge dynamics, surface reaction. Afterward, progress on defect‐related photocatalysis, i.e., CO 2 reduction, H generation, pollutant degradation, organic synthesis systematically discussed critically appraised, putting emphasis their beneficial effects. With offering peculiar sets merits demerits, personal opinion ongoing challenges concluded outlining potentially promising opportunities for engineering photocatalysts. This critical review anticipated offer better understanding spur inspiration designing efficient

Язык: Английский

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Surface Plasmon Resonance‐Mediated Photocatalytic H₂ Generation

ChemSusChem, Год журнала: 2024, Номер 17(21)

Опубликована: Май 22, 2024

Abstract The limited yield of H 2 production has posed a significant challenge in contemporary research. To address this issue, researchers have turned to the application surface plasmon resonance (SPR) materials photocatalytic generation. SPR, arising from collective electron oscillations, enhances light absorption and facilitates efficient separation transfer electron‐hole pairs semiconductor systems, thereby boosting efficiency. However, existing reviews predominantly focus on SPR noble metals, neglecting non‐noble metals semiconductors. In review, we begin by elucidating five different mechanisms, covering hot injection, electric field enhancement, scattering, plasmon‐induced resonant energy transfer, photo‐thermionic effect, which activity. Subsequently, comprehensive overview follows, detailing materials‐metals, semiconductors‐in production. Additionally, personal perspective is offered developing highly SPR‐based photocatalysis systems for solar‐to‐H conversion future. This review aims guide development next‐gen advancing solar‐to‐fuel conversion.

Язык: Английский

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MOF-derived phase-selective synthesis of ln2O3 with appropriate surface atomic arrangement for CO2 photoreduction

Chemical Engineering Journal, Год журнала: 2024, Номер 501, С. 157513 - 157513

Опубликована: Ноя. 8, 2024

Язык: Английский

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Recent Advances in Phase-Engineered Photocatalysts: Classification and Diversified Applications

Materials, Год журнала: 2023, Номер 16(11), С. 3980 - 3980

Опубликована: Май 26, 2023

Phase engineering is an emerging strategy for tuning the electronic states and catalytic functions of nanomaterials. Great interest has recently been captured by phase-engineered photocatalysts, including unconventional phase, amorphous heterophase. photocatalytic materials (including semiconductors cocatalysts) can effectively affect light absorption range, charge separation efficiency, or surface redox reactivity, resulting in different behavior. The applications photocatalysts are widely reported, example, hydrogen evolution, oxygen CO2 reduction, organic pollutant removal. This review will firstly provide a critical insight into classification phase photocatalysis. Then, state-of-the-art development toward reactions be presented, focusing on synthesis characterization methodologies unique structure correlation between performance. Finally, personal understanding current opportunities challenges photocatalysis also provided.

Язык: Английский

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Confined growth of oxygen-vacancy rich TiO2-x nanoparticles with heterophase junction for high-efficiency photocatalytic water purification

Surfaces and Interfaces, Год журнала: 2024, Номер 48, С. 104323 - 104323

Опубликована: Апрель 13, 2024

Язык: Английский

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