Selective oxidation of methane to C2+ products over Au-CeO2 by photon-phonon co-driven catalysis

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

Опубликована: Авг. 30, 2024

Direct methane conversion to high-value chemicals under mild conditions is attractive yet challenging due the inertness of and high reactivity valuable products. This work presents an efficient selective strategy achieve direct through oxidative coupling over a visible-responsive Au-loaded CeO

Язык: Английский

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High-entropy-perovskite subnanowires for photoelectrocatalytic coupling of methane to acetic acid

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

Опубликована: Авг. 6, 2024

The incorporation of multiple immiscible metals in high-entropy oxides can create the unconventional coordination environment catalytic active sites, while high formation temperature results bulk materials with low specific surface areas. Here we develop LaMnO3-type perovskite-polyoxometalate subnanowire heterostructures periodically aligned LaMnO3 and polyoxometalate under a significantly reduced 100 oC, which is much lower than required by state-of-the-art calcination methods for synthesizing oxides. LaMnO3-polyoxometalate subnanowires exhibit excellent activity photoelectrochemical coupling methane into acetic acid mild conditions (1 bar, 25 oC), productivity (up to 4.45 mmol g‒1cat h‒1) selectivity ( > 99%). Due electron delocalization at subnanometer scale, contiguous sites heterostructure efficiently activate C − H bonds stabilize resulted *COOH intermediates, benefits situ *CH3 acid. Incorporating creates unique but areas due temperature. authors report synthesis conditions.

Язык: Английский

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Single Dispersion of Fe(H₂O)₂‐based Polyoxometalate on Polymeric Carbon Nitride for Biomimetic CH₄ Photooxidation

Advanced Materials, Год журнала: 2024, Номер 36(31)

Опубликована: Май 21, 2024

Direct methane conversion to value-added oxygenates under mild conditions with in-depth mechanism investigation has attracted wide interest. Inspired by monooxygenase, the K

Язык: Английский

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Efficient and Direct Oxidation of Methane to C1 Oxygenates over Oxygen Vacancy Titanium Dioxide Nanofiber-Supported Nickel Nanoparticles

ACS Catalysis, Год журнала: 2025, Номер unknown, С. 6545 - 6554

Опубликована: Апрель 7, 2025

Язык: Английский

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Photocatalytic nonoxidative coupling of methane to ethylene over carbon-doped ZnO/Au catalysts

Science China Chemistry, Год журнала: 2023, Номер 66(11), С. 3252 - 3261

Опубликована: Авг. 25, 2023

Язык: Английский

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Photocatalytic Oxidative Coupling of Methane over Au₁Ag Single‐Atom Alloy Modified ZnO with Oxygen and Water Vapor: Synergy of Gold and Silver

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(42)

Опубликована: Сен. 1, 2023

C-H dissociation and C-C coupling are two key steps in converting CH4 into multi-carbon compounds. Here we report a synergy of Au Ag to greatly promote C2 H6 formation over Au1 single-atom alloy nanoparticles (Au1 NPs)-modified ZnO catalyst via photocatalytic oxidative methane (POCM) with O2 H2 O. Atomically dispersed NPs effectively promotes the O *OOH, promoting activation on photogenerated O- form *CH3 . Electron-deficient single atoms, as hopping ladders, also facilitate migration electron donor from NPs. Finally, can readily occur atoms An excellent yield 14.0 mmol g-1 h-1 selectivity 79 % an apparent quantum 14.6 at 350 nm is obtained POCM O, which least times that system. The bimetallic synergistic strategy offers guidance for future design

Язык: Английский

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Highly selective photocatalytic CO2 reduction by metal-N4 dynamically generated from atomically dispersed copper

Chemical Engineering Journal, Год журнала: 2023, Номер 477, С. 147040 - 147040

Опубликована: Окт. 31, 2023

Язык: Английский

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Cocatalysts in photocatalytic methane conversion: recent achievements and prospects

Science China Chemistry, Год журнала: 2023, Номер 66(9), С. 2532 - 2557

Опубликована: Авг. 14, 2023

Язык: Английский

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Research Progress and Outlook on Photocatalytic Conversion of Methane to Methanol

ChemCatChem, Год журнала: 2024, Номер 16(9)

Опубликована: Янв. 3, 2024

Abstract Methane, a main component of natural gas, shale and combustible ice, is widely distributed in nature. The direct conversion efficient utilization methane have become crucial topics within the scientific community. However, two challenges persist this field: activation overoxidation inhibition. Recently, research on subject has reached its pinnacle stage. Herein, we present some works addressing these concerns, particularly employing photocatalytic approaches, with specific focus strategies aimed at enhancing selectivity towards methanol as desired product. Finally, discuss existing propose potential solutions for advancing methane‐to‐methanol technology.

Язык: Английский

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Atomic Dispersed Co on NC@Cu Core‐Shells for Solar Seawater Splitting

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 14, 2024

Abstract With freshwater resources becoming increasingly scarce, the photocatalytic seawater splitting for hydrogen production has garnered widespread attention. In this study, a novel photocatalyst consisting of Cu core coated is introduced with N‐doped C and decorated single Co atoms (Co‐NC@Cu) solar to from seawater. This catalyst, without using noble metals or sacrificial agents, demonstrates superior effficiency 9080 µmolg −1 h , i.e., 4.78% solar‐to‐hydrogen conversion efficiency, exceptional long‐term stability, operating over 340 continuously. The performance attributed several key factors. First, focus‐light induced photothermal effect enhances redox reaction capabilities, while salt‐ions enabled charge polarization around catalyst surfaces extends carrier lifetime. Furthermore, Co─NC@Cu exhibits excellent broad light absorption, promoting photoexcited production. Theoretical calculations reveal that Co─NC acts as active site, showing low energy barriers reduction reactions. Additionally, formation strong surface electric field localized plasmon resonance (LSPR) nanoparticles further reduces reactions, improving activity. work provides valuable insights into intergrating environment, LSPR, core‐shell design efficient robust solar‐driven splitting.

Язык: Английский

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