Photocatalytic oxidation of methane to C1 oxygenates promoted by Fe−N−Ti electron bridge

Applied Catalysis B Environment and Energy, Год журнала: 2024, Номер 358, С. 124417 - 124417

Опубликована: Июль 19, 2024

Язык: Английский

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Regulation of O2 activation pathway boosts efficient photocatalytic methane oxidation to methanol

Separation and Purification Technology, Год журнала: 2024, Номер 354, С. 129064 - 129064

Опубликована: Авг. 8, 2024

Язык: Английский

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Efficient Photocatalytic CH₄ Conversion to C1 Oxygenates on Pd/C-TiO₂/g-C₃N₄ Photocatalyst

Energy & Fuels, Год журнала: 2024, Номер 38(17), С. 16949 - 16956

Опубликована: Авг. 22, 2024

In this work, a Pdx/C-TiO2/g-C3N4-y photocatalyst was synthesized by combining g-C3N4 with Ti3C2 through heat treatment, followed loading noble metal Pd. Morphological characterization and XPS before after reaction revealed the formation of C-TiO2/g-C3N4 Z-scheme heterojunction system Pd deposited on top. The optimal catalyst, Pd0.8/C-TiO2/g-C3N4-5, exhibited significantly enhanced total C1 yields under mild conditions, achieving 6.1 2.6 times C-TiO2, respectively. Notably, HCHO yield improved to 3854.79 μmol·g–1·h–1. Mechanistic studies indicated that CH4 conversion performance effectively suppressing photogenerated charge recombination. Additionally, loaded promoted adsorption activity, further improving efficiency. Furthermore, contributed high accelerating generation both •OH radicals.

Язык: Английский

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Efficient Photocatalytic Propane Direct Dehydrogenation to Propylene Over PtO₂ Clusters

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 19, 2025

Abstract The direct dehydrogenation of alkanes to olefins under mild conditions is challenging due the inert nature alkyl C─H bonds. Herein, an efficient photocatalytic system developed for propane (PDH) propylene, consisting ≈1.30 nm sized PtO 2 clusters immobilized on a layered double hydroxide ‐derived ZnO/Al O 3 support (LD‐Pt n ). Under UV excitation (365 nm), photogenerated holes in ZnO migrate Pt sites at /ZnO interfaces, thereby activating and dissociating bonds propane. A propylene production rate almost 1 mmol g −1 h nearly 100% selectivity are achieved compositionally optimized LD‐Pt photocatalyst. Control experiments density functional theory calculations further verify that excellent PDH performance stems from synergism between semiconductor loaded species. This work identifies promising new route alkanes.

Язык: Английский

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[CrO₄] Clusters as Dehydrogenation Terminators for Photocatalytic Oxidation of Methane to Achieve Nearly 100% Oxygenates Selectivity

ACS Catalysis, Год журнала: 2025, Номер unknown, С. 4824 - 4836

Опубликована: Март 7, 2025

Язык: Английский

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Modulating Chloride Adsorption for Efficient Chloride-Mediated Methane Conversion over Tungsten Oxide Photoanode

ACS Catalysis, Год журнала: 2025, Номер unknown, С. 6058 - 6066

Опубликована: Март 30, 2025

Язык: Английский

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Ag plasmon adjusted single crystal Cu2O nanoreactor array with ordered charge transport and light multiplication effect for high photocatalytic conversion of CO2

Nano Energy, Год журнала: 2025, Номер unknown, С. 110930 - 110930

Опубликована: Апрель 1, 2025

Язык: Английский

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Highly Selective Photocatalytic CO₂ Reduction to C₂H₆ via Nanocluster-Single Atom-Vacancy on Ceria: Synergistic Mechanism and Orbital Effects

Nano Letters, Год журнала: 2025, Номер unknown

Опубликована: Апрель 7, 2025

The photocatalytic reduction of CO2 to high-value C2 products involves sluggish multiple proton-electron couplings, resulting in low efficiency and selectivity. This study demonstrates that palladium (Pd) single-atom (PdSA)- Pd nanocluster (PdNCs)-loaded CeO2 with abundant oxygen vacancies (Ov) synergistically enhance CO2-to-ethane (C2H6) conversion effectively selectively. PdSA+NCs/CeO2 photocatalyst achieves 80.4% electron selectivity for C2H6 production an consumption rate 206.3 μmol gcat-1 h-1 pure water, representing a 172.4-fold enhancement over pristine CeO2. PdNCs interact neighboring PdSA Ov form Fermi level the continuous characteristics discrete energy levels, improving charge distribution local spatial electric fields. favors migration from π σ orbital COCO*, promoting C-C coupling. Our findings provide new insights rationally design synergistic interactions between SA, NCs, achieve high toward products.

Язык: Английский

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Core–Shell MIL-125-NH₂@FeOOH Nanocomposites for Highly Selective Photocatalytic Oxidation of Methane to Formaldehyde in Water Vapor

Inorganic Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Апрель 21, 2025

Formaldehyde (HCHO), a crucial industrial chemical, finds extensive applications across diverse sectors, including household products, commercial materials, aviation, and medical supplies. Methane (CH4), as an abundant C1 resource, presents promising feedstock for HCHO synthesis. However, the direct conversion of CH4 to remains challenging due its inherent chemical inertness, characterized by low polarizability high C-H bond dissociation energy (439 kJ mol-1), coupled with reactivity intermediate products. The development efficient strategies selective oxidation high-value under mild conditions is therefore significant practical importance. In this study, we developed series MIL-125-NH2@FeOOH-x heterostructured photocatalysts (FM-x) through controlled deposition FeOOH nanoparticles on MIL-125-NH2 surfaces. Comprehensive characterization photocatalytic evaluations reveal that optimized FM-1 catalyst facilitates in situ H2O2 generation subsequent decomposition into hydroxyl radicals (•OH), enabling photooxidation. Remarkably, achieves exceptional production rate 197.79 μmol·gcat-1 >99.99% selectivity water vapor, significantly outperforming both pristine components. This work system conversion, offering new insights design catalysts chemistry.

Язык: Английский

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Ionic liquid-TiO2-CuOx Composite Interfaces Combined with Gas Directional Transmission for Enhanced Electrooxidation of Methane to Ethanol

Applied Catalysis B Environment and Energy, Год журнала: 2025, Номер unknown, С. 125411 - 125411

Опубликована: Апрель 1, 2025

Язык: Английский

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