S-Scheme Heterojunction/Single-Atom Dual-Driven Charge Transport for Photocatalytic Hydrogen Production

ACS Catalysis, Journal Year: 2024, Volume and Issue: 14(10), P. 7308 - 7320

Published: April 25, 2024

The rational design and modification of heterojunction photocatalysts aimed at achieving fast charge transport efficient photocatalytic performance is a central goal solar-light-driven water splitting hydrogen evolution, yet this remains challenge. Herein, we prepare hierarchical photocatalyst composed few-layer violet phosphorene (VP), cadmium sulfide (CdS) nanoparticles (NPs), Pd single atoms (SAs) by facile one-step ball-milling strategy. underlying VP/CdS p–n heterojunctions are verified to adopt S-scheme directional transfer combining in situ irradiated X-ray photoelectron spectroscopy electron paramagnetic resonance. atomically dispersed sites the low-valence state coupled with synergistically achieve ultrafast (2.2 ps), which interfacial Pd–S Pd–P bonds serve as channels. In addition, density-functional theory calculations reveal key role enhancement light-harvesting capacity optimization proton adsorption thermodynamics. A visible-light production rate 82.5 mmol h–1 g–1 attained an optimal 1 wt % Pd–5 photocatalyst, manifests 54-fold increase respect that CdS NPs, addition apparent quantum efficiency (AQE) 25.7% 420 nm. This work showcases valid combination SAs for separation promoting others.

Language: Английский

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Fast‐Charging Anode Materials for Sodium‐Ion Batteries

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(35)

Published: June 26, 2024

Sodium-ion batteries (SIBs) have undergone rapid development as a complementary technology to lithium-ion due abundant sodium resources. However, the extended charging time and low energy density pose significant challenge widespread use of SIBs in electric vehicles. To overcome this hurdle, there is considerable focus on developing fast-charging anode materials with Na⁺ diffusion superior reaction kinetics. Here, key factors that limit fast are examined, which provides comprehensive overview major advances characteristics across various materials. Specifically, it systematically dissects considerations enhance rate performance materials, encompassing aspects such porous engineering, electrolyte desolvation strategies, electrode/electrolyte interphase, electronic conductivity/ion diffusivity, pseudocapacitive ion storage. Finally, direction prospects for also proposed, aiming provide valuable reference further advancement high-power SIBs.

Language: Английский

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Coordination tuning of Fe2+ ions concentration in Fe-doped black phosphorus-carbonized cotton fiber (Fe-BP-CCF) composites to regulate photocatalysis and peroxymonosulfate (PMS) activation towards highly efficient degradation of organic pollutants

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 483, P. 149326 - 149326

Published: Feb. 6, 2024

Language: Английский

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Large-Scale synthesis of crystalline phosphorus nanosheets with superior air-water stability and flame-retardancy ability

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 159566 - 159566

Published: Jan. 1, 2025

Language: Английский

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Red Phosphorus Grafted High‐Index (116) Faceted Anatase TiO₂ for Z‐Scheme Photocatalytic Pure Water Splitting

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 34(9)

Published: Nov. 20, 2023

Abstract Red phosphorus (RP) is an emerging visible‐light‐responsive photocatalyst, yet the rapid charge recombination has limited photocatalytic hydrogen production activity. In this work, a Z‐scheme heterostructure with RP nanolayer coated on high‐index (116) faceted anatase TiO 2 nanoparticles (TiO @RP) designed and fabricated via chemical vapor deposition. Compared pristine RP, optimized @RP exhibits significantly boosted activity for pure water splitting, evolution rate reaching 12.9 µmol·h −1 , under simulated solar light irradiation. The strong interfacial interaction staggered band alignment between result in formation of built‐in electric field, which can drive directional migration from conduction (CB) to valance (VB) irradiation, photoelectrons holes high redox ability maintained at CB VB respectively. This well‐designed greatly promotes photogenerated separation direct transfer pathway.

Language: Английский

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Synthesis of black phosphorus and its applications

Materials Today Physics, Journal Year: 2024, Volume and Issue: 43, P. 101396 - 101396

Published: March 13, 2024

Language: Английский

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Electrifying P(V): Access to Polar and Radical Reactivity

Angewandte Chemie International Edition, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 6, 2025

Abstract Electrochemical, fully stereoselective P(V)‐radical hydrophosphorylation of olefins and carbonyl compounds using a P(V) reagent is disclosed. By strategically selecting the anode material, radical reactivity accessible for alkene whereas polar pathway operates ketone hydrophosphorylation. The mechanistic intricacies these chemoselective transformations were explored in‐depth.

Language: Английский

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Emerging Violet Phosphorus Nanomaterial for Biomedical Applications

Advanced Healthcare Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 10, 2025

Abstract Violet phosphorus (VP) is a allotrope first discovered by Hittorf in 1865, which has aroused more attention the biomedical field recent years attributed to its gradually unique properties. VP can be further categorized into bulk VP, nanosheets (VPNs), and quantum dots (VPQDs), chemical vapor transport (CVT), liquid‐phase/mechanical/laser exfoliation, solvothermal synthesis are common preparation approaches of VPNs, VPQDs, respectively. Compared with another (black phosphorus, BP) that once highly regarded applications, nanomaterial (namely VPNs VPQDs) not only exhibits tunable bandgap, moderate on/off current ratio, good biodegradability, but shows enhanced stability biosafety as well, allowing it promising candidate for variety applications like antibacterial therapy, anticancer biosensing disease diagnosis. In this review, classification relevant routes initially summarized, properties momentous subsequently expounded. The latest research advances emerging then introduced detail, both existing challenges future prospects also discussed.

Language: Английский

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Electrochemically in situ formed rocksalt phase in titanium dioxide determines pseudocapacitive sodium-ion storage

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: Feb. 27, 2025

Language: Английский

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Limitations and Strategies toward High-Performance Red Phosphorus Materials for Li/Na-Ion Batteries

Energy Material Advances, Journal Year: 2024, Volume and Issue: 5

Published: Jan. 1, 2024

Phosphorus, particularly the red phosphorus (RP) allotrope, has been extensively studied as an anode material in both lithium-ion batteries (LIBs) and emerging sodium-ion (SIBs). RP is featured with high theoretical capacity (2,596 mA h g −1 ), suitable low redox potential (~0.7/0.4 V for LIBs/SIBs), abundant resources, environmental friendliness. Despite its promises, inherent poor electrical conductivity of (~10 −14 S cm ) significant volume changes during charge/discharge processes (>300%) compromise cycling stability. In order to address these issues, various countermeasures have proposed, focusing on incorporation materials that provide mechanical strength composite-type anodes. addition, interfacial instability, oxidation, safety concerns mass ratio active electrode need be addressed. Herein, this review summarizes up-to-date development materials, outlines challenges, presents corresponding aimed enhance electrochemical performance. It covers aspects such structural design RP, choice additive electrolytes, rational construction, etc. The also discusses future prospects LIBs/SIBs aims a different perspective challenges must overcome fully exploit meet commercial application requirements.

Language: Английский

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