A plasmonic S-scheme Au/MIL-101(Fe)/BiOBr photocatalyst for efficient synchronous decontamination of Cr(VI) and norfloxacin antibiotic

eScience, Год журнала: 2023, Номер 4(2), С. 100208 - 100208

Опубликована: Ноя. 3, 2023

Present photocatalysts for the synchronous cleanup of pharmaceuticals and heavy metals have several drawbacks, including inadequate reactive sites, inefficient electron–hole disassociation, insufficient oxidation reduction power. In this research, we sought to address these issues by using a facile solvothermal-photoreduction route develop an innovative plasmonic S-scheme heterojunction, Au/MIL-101(Fe)/BiOBr. The screened-out Au/MIL-101(Fe)/BiOBr (AMB-2) works in durable high-performance manner both Cr(VI) norfloxacin (NOR) eradication under visible light, manifesting up 53.3 2 times greater NOR abatement rates, respectively, than BiOBr. Remarkably, AMB-2's ability remove Cr(VI)-NOR co-existence system is appreciably better sole-Cr(VI) environment; synergy among Cr(VI), NOR, AMB-2 results utilization photo-induced carriers, yielding desirable capacity decontaminating synchronously. integration MOF-based heterojunctions effect contributes markedly reinforced photocatalytic increasing number active augmenting visible-light absorbance, boosting efficient disassociation redistribution powerful photo-carriers, elevating generation substances. We provide details mechanism, decomposition process, bio-toxicity intermediates. This synergistic strategy modifying with noble metal opens new horizons devising excellent photosystems environment purification.

Язык: Английский

---

Constructing CoO/Mo₂C Heterostructures with Interfacial Electron Redistribution Induced by Work Functions for Boosting Overall Water Splitting

Small, Год журнала: 2023, Номер 19(49)

Опубликована: Авг. 23, 2023

Space charge transfer of heterostructures driven by the work-function-induced built-in field can regulate electronic structure catalysts and boost catalytic activity. Herein, an epitaxial heterojunction catalyst CoO/Mo2 C with interfacial electron redistribution induced work functions (WFs) is constructed for overall water splitting via a novel top-down strategy. Theoretical simulations experimental results unveil that WFs-induced facilitates from CoO to Mo2 through formed "Co─C─Mo" bond at interface C, achieving redistribution, further optimizing Gibbs free energy primitive reaction step then accelerating kinetics hydrogen evolution (HER). As expected, effects exhibits excellent HER activity only needing overpotential 107 mV achieve 10 mA cm-2 stability 60-h continuous catalyzing. Besides, assembled behaves outstanding performance toward (1.58 V ). This provides possibility designing materials based on arising application in other fields.

Язык: Английский

---

Hydrogen evolution with hot electrons on a plasmonic-molecular catalyst hybrid system

Nature Communications, Год журнала: 2024, Номер 15(1)

Опубликована: Янв. 10, 2024

Abstract Plasmonic systems convert light into electrical charges and heat, mediating catalytic transformations. However, there is ongoing controversy regarding the involvement of hot carriers in process. In this study, we demonstrate direct utilisation plasmon electrons hydrogen evolution reaction with visible light. We intentionally assemble a plasmonic nanohybrid system comprising NiO/Au/[Co(1,10-Phenanthrolin-5-amine) 2 (H O) ], which unstable at water thermolysis temperatures. This assembly limits thermal contribution while ensuring that are primary contributors to By combining photoelectrocatalysis advanced situ spectroscopies, can substantiate mechanism plasmon-induced play crucial role. These directed phenanthroline ligands, facilitating rapid, concerted proton-electron transfer steps essential for generation. The response modulation aligns distinctive profile carrier-mediated process, featuring positive, though non-essential, heat contribution.

Язык: Английский

---

Solar‐Driven Hydrogen Evolution from Value‐Added Waste Treatment

Advanced Energy Materials, Год журнала: 2024, Номер 14(15)

Опубликована: Фев. 13, 2024

Abstract Hydrogen is one of the most important energy alternatives to conventional fossil‐based fuel. Solar based photocatalytic hydrogen evolution (PHE) a salient approach produce fuel but its efficiency generally limited by sluggish and energy‐unfavorable oxidation reaction. Meanwhile, waste treatment has become worldwide problem clean highly demanded avoid vast greenhouse emission currently. Inspiringly, PHE can be effectively coupled with favorable photooxidation many wastes, which kills two birds stone. In this review, recent progress in presented, where typical solid, liquid, gas wastes have been briefly discussed. Focusing on understanding complicated reaction mechanism revelation products, cutting‐edge techniques for photophysics surface chemistry characterization analyzed, are imperative facilitate following investigation. Finally, developing trend existing issues current research also discussed detail so that holistic blueprint portrayed accelerate their application realistic world.

Язык: Английский

---

Quantifying the distinct role of plasmon enhancement mechanisms in prototypical antenna-reactor photocatalysts

Nature Communications, Год журнала: 2025, Номер 16(1)

Опубликована: Март 6, 2025

Plasmonic photocatalysis enabled by the unique localized surface plasmon resonance represents a promising approach for efficient solar energy conversion. Elucidating distinct plasmonic catalytic mechanisms and quantification of their effect is crucial yet highly challenging, due to complex synergistic nature. Herein, we achieve differentiation thermal as well various non-thermal reaction in prototypical Au-[Fe(bpy)3]2+ antenna-reactor photocatalysts using water splitting test reaction. Through modification condition connection schemes, charge transfer are selectively shielded. It found that carrier-induced photochemistry dominates photocurrent (~57%) reducing, hydrogen evolution environment; whereas resonant (~54%) an oxidative, oxygen environment. Our provides generalized fundamental understandings on role plasmons important design principles towards types catalyst configurations.

Язык: Английский

---

Enhanced solar hydrogen production via reconfigured semi-polar facet/cocatalyst heterointerfaces in GaN/Si photocathodes

Nature Communications, Год журнала: 2025, Номер 16(1)

Опубликована: Янв. 21, 2025

The development of an efficient and durable photoelectrode is critical for achieving large-scale applications in photoelectrochemical water splitting. Here, we report a unique composed reconfigured gallium nitride nanowire-on-silicon wafer loaded with Au nanoparticles as cocatalyst that achieved impressive applied bias photon-to-current efficiency 10.36% under AM 1.5G one sun illumination while exhibiting stable PEC hydrogen evolution over 800 h at high current density. Specifically, by tailoring the GaN nanowires via simple alkaline-etching step to expose inner (10 $$\bar{1}\bar{1}$$ ) facets, achieve highly coupled semiconductor nanowire-cocatalyst heterointerface strong electron interaction. strongly nanowire/Au not only optimizes electronic structure form abundant active interfacial regions, eventually realizing superior activity but also enables provide stronger anchoring effect nanoparticles, preventing detachment during intense process. proposed offers feasible overcoming efficiency-reliability bottleneck devices producing clean fuel. Efficient photoelectrodes are essential authors gold cocatalyst, 10% stability h.

Язык: Английский

---

Ultrafast and highly selective gold recovery with high capture capacity from electronic waste by upconversion of a silsesquioxane-based hybrid luminescent aerogel

Journal of Materials Chemistry A, Год журнала: 2024, Номер 12(10), С. 5679 - 5691

Опубликована: Янв. 1, 2024

To maintain sustainable development and improve resource utilization, there is an urgent need to recover gold using eco-friendly, efficient highly-selective method.

Язык: Английский

---

Insight into the development and proceedings of Au@Al–CeVO₄ catalysts for water splitting: an advanced outlook for hydrogen generation with sunlight

Catalysis Science & Technology, Год журнала: 2024, Номер 14(4), С. 850 - 862

Опубликована: Янв. 1, 2024

In this study, we report a promising approach and new catalysts, namely Au@Al–CeVO 4 photocatalysts, for sustainable hydrogen production from water splitting.

Язык: Английский

---

The paradox of thermal vs. non-thermal effects in plasmonic photocatalysis

Nature Communications, Год журнала: 2024, Номер 15(1)

Опубликована: Сен. 12, 2024

The debate surrounding the roles of thermal and non-thermal pathways in plasmonic catalysis has captured attention researchers sparked vibrant discussions within scientific community. In this review, we embark on a thorough exploration intriguing discourse, starting from fundamental principles culminating detailed understanding divergent viewpoints. We probe into core by elucidating behavior excited charge carriers illuminated nanostructures, which serves as foundation for two opposing schools thought. present key arguments evidence put forth proponents both pathways, providing perspective their respective positions. Beyond theoretical divide, discussed evolving methodologies used to unravel these mechanisms. discuss use Arrhenius equations variations, shedding light ensuing debates about applicability. Our review emphasizes significance localized surface plasmon resonance (LSPR), investigating its role collective oscillations decay dynamics that influence catalytic processes. also talked nuances activation energy, exploring relationship with nonlinearity temperature intensity dependence reaction rates. Additionally, address intricacies catalyst measurements implications light-triggered dynamics. further discusses wavelength-dependent rates, kinetic isotope effects, competitive electron transfer reactions, offering an all-inclusive view field. This not only maps current landscape photocatalysis but facilitates future explorations innovations unlock full potential plasmon-mediated catalysis, where synergistic approaches could lead different vistas chemical transformations.

Язык: Английский

---

Efficient Charge Separation in Ag/PCN/UPDI Ternary Heterojunction for Optimized Photothermal‐Photocatalytic Performance via Tandem Electric Fields

Small, Год журнала: 2024, Номер 20(28)

Опубликована: Май 21, 2024

Charge separation driven by the internal electric field is a research hotspot in photocatalysis. However, it remains challenging to accurately control continuously accelerate charge transfer. Herein, strategy of constructing tandem transfer photocatalysts proposed. The plasma field, interface and intramolecular are integrated into Ag/g-C

Язык: Английский

---