Role of Photorelaxation Effect in Stability and Activity of K doped TiO2/NiFe-LDH Composites for Oxygen Evolution Reaction

Renewable Energy, Год журнала: 2025, Номер unknown, С. 123078 - 123078

Опубликована: Апрель 1, 2025

Язык: Английский

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Oxygen Vacancy Modification MIL-125(Ti) Promotes CO2 Photoreduction to CO with Near 100% Selectivity

Materials, Год журнала: 2025, Номер 18(6), С. 1343 - 1343

Опубликована: Март 18, 2025

The substantial release of industrial carbon dioxide has been identified as a key factor in the development various environmental issues. In addressing these concerns, utilization photocatalytic technology for reduction garnered significant attention. disadvantage CO2 photoreduction is problem product yield and selectivity. It known that MIL-125(Ti) with high specific surface area (SBET) possesses more active sites using Ti node. calcination reducing atmosphere shown to introduce oxygen vacancies (OV), thereby enhancing material’s internal pores. This process demonstrated result increase SBET an enhancement Ti3+/Ti4+ ratio. increased Ti3+ centers have found improve properties. results demonstrate OV-rich MIL-125-2H material exhibits high-performance highly selective CO2.

Язык: Английский

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Iron Nitride‐Derived In Situ N‐doped Fe₂O₃ Nanoaggregates with Optimized Band Structure for Solar‐Driven Photocatalytic Water Splitting

Chemistry - An Asian Journal, Год журнала: 2025, Номер unknown

Опубликована: Апрель 21, 2025

This study presents a facile strategy for synthesizing in situ N-doped Fe2O3 from iron nitride to tune its band structure photocatalytic applications. XRD analysis confirms the structural formation α-Fe2O3, while XPS verifies nitrogen incorporation of 8.87% and 5.52% obtained by oxidizing at 450 °C 550 °C, corresponding high-doped low-doped (HD-FO LD-FO) systems. FESEM BET showed that N-doping influenced particle aggregation, surface area, porosity, with bare (FO) exhibiting highest area (43.9 m2/g), followed HD-FO (34.39 m2/g) LD-FO (25.79 m2/g). UV-vis valence XPSs revealed bandgap narrowing 2.80 eV 2.71 (LD-FO) 2.53 (HD-FO), improving visible light absorption. Mott-Schottky plots more negative conduction potentials (-0.46 eV) (-0.54 compared FO (-0.39 eV), indicating enhanced electron transfer properties Photocatalytic RhB degradation under sunlight achieved ∼97%, 90%, 87%, H2 production rates 839.6, 749.4, 656.9 µmol g-1 h-1 LD-FO, HD-FO, FO, respectively. The results highlight efficacy as precursor doping N efficient

Язык: Английский

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Boosting photocatalytic H2O2 production and non-biodegradable ofloxacin removal via a novel Ti3C2 MXene nanosheet-supported BiVO4/InVO4 Z-scheme heterojunction: Optimization and mechanism insights

Journal of Water Process Engineering, Год журнала: 2025, Номер 74, С. 107722 - 107722

Опубликована: Апрель 23, 2025

Язык: Английский

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Plasmonic Ag/Bi/BiVO4 Schottky heterojunction on flexible PDA-cotton fabric for synergistically enhanced photocatalytic oxygen evolution and recyclability

Applied Surface Science, Год журнала: 2025, Номер unknown, С. 163386 - 163386

Опубликована: Апрель 1, 2025

Язык: Английский

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Tuning the Electronic Structure of Ni₂P through Fe Doping to Trigger the Lattice-Oxygen-Mediated Oxygen Evolution Reaction

Inorganic Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Май 2, 2025

Developing cost-effective electrocatalysts for efficient seawater splitting requires a fundamental understanding of the oxygen evolution reaction (OER) mechanism. Herein, iron-doped nickel phosphide (Fe-Ni2P) is synthesized via hydrothermal-impregnation-phosphidation strategy to investigate role Fe incorporation in modulating electronic structure and OER pathways. Mechanistic investigations demonstrate that doping triggers shift from adsorbate mechanism (AEM) lattice oxygen-mediated (LOM) pathways, evidenced by pH-dependent kinetics, tetramethylammonium cation probing, situ electrochemical impedance spectroscopy (EIS). The LOM involves nonconcerted proton-electron transfers, facilitated accelerated hydroxide adsorption (ks = 0.275 s-1) dynamic surface reconstruction into amorphous NiOOH. reduced activation energy (27.1 kJ mol-1) lower charge-transfer resistance Fe-Ni2P underscore its superior thermodynamics kinetics. X-ray photoelectron EIS further validate vacancy accumulation during process. Electrochemical studies reveal exhibits low overpotential 220 mV at 10 mA cm-2 remarkable stability through phosphate-mediated Cl- repulsion involving alkaline seawater. This work establishes Fe-induced modulation as critical activating LOM-dominated catalysis transition metal phosphides.

Язык: Английский

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Zinc-doped tin dioxide nanopowders as highly efficient photocatalysts for organic pollutants degradation and hydrogen production

Inorganic Chemistry Communications, Год журнала: 2025, Номер unknown, С. 114745 - 114745

Опубликована: Май 1, 2025

Язык: Английский

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Surface electric field-induced molecular modification of pollutants on single-atom manganese catalysts for boosting photocatalytic water purification and simultaneous H2O2 production

Journal of Hazardous Materials, Год журнала: 2025, Номер 494, С. 138742 - 138742

Опубликована: Май 26, 2025

Язык: Английский

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Enhanced Water‐Splitting Performance of Hematite Photoanodes via Fluorine‐Induced Carrier Dynamics and Lattice Oxygen Activation

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Май 27, 2025

Abstract Fluorine (F) has emerged as a critical dopant for enhancing the performance of hematite (Fe 2 O 3 ) photoanodes in photoelectrochemical (PEC) water oxidation; however, its functional mechanisms remain to be fully elucidated. This study systematically demonstrates that F‐doping improves Fe ‐based through dual effects involving increasing charge carrier density electron structure modulation and activating lattice oxygen oxidation mechanism by optimizing intermediate adsorption. The are strongly correlated with improved separation efficiency injection across series (oxy)hydroxide/F‐Fe photoanodes. These optimally integrated into F‐NiFe/F‐FeOOH/F‐AlOOH/F‐Fe architecture, where precisely aligned hole‐trap energy levels enable exceptional (4.04 mA cm −2 at 1.23 V RHE , applied bias photon‐to‐current = 0.62%). work provides novel insights F doping proposes an design strategy impact, advancing field PEC splitting.

Язык: Английский

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Dual-Functional 2D-3D Zn2In2S5 for photocatalytic degradation of azo dye and hydrogen production

Journal of Photochemistry and Photobiology A Chemistry, Год журнала: 2025, Номер unknown, С. 116542 - 116542

Опубликована: Июнь 1, 2025

Язык: Английский

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