Mechanism Exploration of the Photoelectrochemical Immunoassay for the Integration of Radical Generation with Self-Quenching

Analytical Chemistry, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 10, 2024

Photoelectrochemical (PEC) sensing mechanisms based on enzyme-catalyzed strategies primarily achieve the quantitative analysis of biomolecules through enhancement or attenuation photocurrent signals. However, there are still no reports that delve into principles signaling conversion in reaction between photoactive materials and biomolecules. In this work, we demonstrated indium oxysulfide InOS-0.5 heterojunction has excellent peroxidase activity to catalyze H

Language: Английский

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Synergistic modification of Cu₃V₂O₈ nanosheeta photoelectrodes with NiFe and NiO_x for efficient and ultra‐stable photoelectrochemical water oxidation

Journal of Chemical Technology & Biotechnology, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 29, 2025

Abstract BACKGROUND The design and development of environmentally friendly, efficient, stable photoelectrodes are crucial for advancing photoelectrochemical (PEC) water‐splitting technology. RESULTS In this study, we report a novel strategy the preparation copper vanadate (Cu 3 V 2 O 8 ) nanosheet arrays using low‐temperature solution method. Notably, is first instance directly growing Cu on FTO (fluorine‐doped tin oxide) conductive glass. morphology developed offers larger specific surface area improved bulk charge separation efficiency, which desirable characteristics PEC applications. To further enhance stability performance nanosheets, synergistic modification was employed. This approach involved deposition an NiO x passivation layer incorporation NiFe co‐catalyst. significantly arrays. modified photoelectrode achieved impressive photocurrent 0.67 mA cm −2 at 1.23 versus reversible hydrogen electrode demonstrated over 80 h operation. CONCLUSION work provides new, low‐cost, effective efficient water splitting, step towards friendly sustainable energy technologies. © 2025 Society Chemical Industry (SCI).

Language: Английский

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Properties and modulation strategies of ZnIn₂S₄ for photoelectrochemical water splitting: opportunities and prospects

Energy Materials, Journal Year: 2025, Volume and Issue: 5(7)

Published: April 1, 2025

The global energy crisis has driven significant research into renewable sources, and photoelectrochemical (PEC) water splitting stands out as one of the most promising solutions for hydrogen production. Among various materials developed PEC splitting, ternary metal sulfides, particularly ZnIn2S4, have garnered considerable attention due to their unique combination electronic, optical, chemical properties. This paper presents a comprehensive analysis structure properties explores modification strategies ZnIn2S4-based photoanodes, discusses application in splitting. Furthermore, we address challenges limitations photoanodes highlight prospects future development.

Language: Английский

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Optimized Nickel Phosphate Cocatalyst on Ge-Doped Hematite Photoanode for Selective Oxidation of 5-Hydroxymethylfurfural to 2,5-Furandicarboxylic Acid

ACS Sustainable Chemistry & Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: April 10, 2025

Language: Английский

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Interfacial engineering enabling solution-processed Cu:NiO_x/Sb₂Se₃/TiO₂/Pt photocathodes for highly efficient photoelectrochemical water-splitting

Sustainable Energy & Fuels, Journal Year: 2024, Volume and Issue: 8(16), P. 3670 - 3679

Published: Jan. 1, 2024

Quenching the interfacial recombination loss via a Cu:NiO x /Sb 2 Se 3 /TiO /Pt multilayer heterojunction to yield 12.5-fold enhancement in hydrogen evolution reaction rate.

Language: Английский

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Enhanced Photoelectrochemical Water Splitting Performance of BiVO₄ Photoanode by Integrating Electron-Rich Polyoxometalate into Metal–Organic Framework

The Journal of Physical Chemistry C, Journal Year: 2024, Volume and Issue: 128(37), P. 15266 - 15276

Published: Aug. 22, 2024

Bismuth vanadate (BiVO4) photoanodes face challenges such as rapid electron–hole recombination, slow water oxidation kinetics, and poor surface stability. To tackle these problems, this study incorporates a Keggin-type polyoxometalate (POM) anion, characterized by high negative charge the absence of precious metals, into MIL-101(Cr)/BiVO4 composite photoanode. The POM anion effectively enhances separation injection within BiVO4 photoanode under minimal optimization conditions separating photogenerated holes from MIL-101 framework. NiPOM/MIL-101(Cr)/BiVO4 achieves photocurrent density 4.5 mA cm–2 at 1.23 V vs reversible hydrogen electrode (RHE), approximately 4 times higher than that pristine BiVO4. Furthermore, oxygen evolution reaction yield reaches 36.2 μmol after 90 min reaction, with faradic efficiencies consistently exceeding 84%, indicating predominant involvement carriers in photoelectrochemical (PEC) splitting. At an applied potential RHE, bias photon-to-current efficiency (ABPE) 1.16%. transfer mechanism photochemical process reveals uniform distribution NiPOM cocatalyst hydrophilic zeolite cage MIL-101(Cr) promotes formation additional chemically active sites facilitates electron its Ni site to surface, significantly boosting density. This suppresses dissolution V5+ ions stability during decomposition. work presents novel strategy for designing POM-based molecular synergistic catalysts enhance PEC splitting, thereby facilitating efficient conversion solar energy clean fuel.

Language: Английский

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Enhanced interfacial electric field via sulfur vacancies modified ZnIn2S4-Vs@NiIn2S4 S-scheme photocatalysts for simultaneous H2 evolution and benzyl alcohol oxidation

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: unknown, P. 129832 - 129832

Published: Sept. 1, 2024

Language: Английский

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Facile Synthesis of Selenium Nanoparticles for Enhanced Oxygen Evolution Reaction: Insights into Electrochemical and Photoelectrochemical Catalysis

ACS Omega, Journal Year: 2024, Volume and Issue: 10(1), P. 520 - 528

Published: Dec. 26, 2024

Implementing a hydrogen economy on an industrial scale poses challenges, particularly in developing cost-effective and stable catalysts for water electrolysis. This study explores the catalytic potential of selenium nanoparticles (Se-NPs) synthesized via simple chemical bath deposition method electrochemical photoelectrochemical (PEC) splitting. The successful fabrication Se-NPs fluorine-doped tin oxide (FTO) electrodes has been confirmed using wide range analytical tools like X-ray diffraction, energy-dispersive spectroscopy, scanning electron microscopy. Importantly, measurements revealed superior electrocatalytic activity modified Se-NPs/FTO electrodes, with low overpotential (220 mV at 10 mA cm–2) Tafel slope (90.13 dec–1), indicating faster reaction kinetics reduced energy inputs oxygen evolution reaction. Furthermore, electrode was employed PEC splitting Na2S electrolyte, showing notable enhancement photocurrent density difference 700 μA cm–2 between light dark conditions 1.5 V vs RHE, demonstrating efficient light-driven production. overall findings this work establish that proposed are promising composites both performance, thereby providing insights into large-scale

Language: Английский

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Photoanode/Electrolyte Interface Modification for Efficient Hydrogen Evolution in Cu₂SnS₃ Dots-Sensitized Solar PEC Cells

Langmuir, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 19, 2024

It is proven through transmission electron microscope (TEM) analysis that solar sensitizer Cu2SnS3 (CTS) dots prepared via the hot-injection route are nonspherical, polyhedral nanocrystals with size of ∼11 nm. CTS were deposited into a porous TiO2 layer to form CTS/TiO2, an effective type II heterojunction in photoanodes. The electronic and energy band structures studied by plane-wave ultrasoft pseudopotential method based on density functional theory (DFT) verified ultraviolet–visible (UV–vis) spectroscopy. UV–vis Photoluminescence (PL) spectra show CTS/TiO2 photoanode exhibits wider visible-light absorption as well lower charge recombination. ZnS quantum (QDs) situ successive ion adsorption reaction (SILAR) passivation can inhibit reverse carrier transfer increase photocurrent building potential barrier electrolyte interface. When 2-layer QDs deposited, maximum photoelectrochemical (PEC) cell composed ZnS/CTS/TiO2 photoanode, Pt counter electrode, Na2SO4 solution 8.43 mA/cm2 applied bias photon-to-current efficiency (ABPE) 7.79%. Under 1 sun (AM 1.5, 100 mW/cm2) 0.6 V bias, its hydrogen yield reached 125.7 μmol·cm–2 after 4 h rate 31.4 μmol·cm–2·h–1 contrast 107.86 21.3 for photoanode.

Language: Английский

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Vacancy and bonding engineering of rhenium (Re)-based dichalcogenides materials in photoelectrodes: From design and construction to properties

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 157922 - 157922

Published: Nov. 1, 2024

Language: Английский

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