Oxygen vacancies induced intrinsic electric field attenuation for superior molecular oxygen activation and NO oxidation

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: 505, P. 159421 - 159421

Published: Jan. 8, 2025

Language: Английский

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Optimizing oxygen vacancies through crystal facets engineering to enhance the photooxidation of methane

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 159227 - 159227

Published: Jan. 1, 2025

Language: Английский

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Largely Promoted C–H Activation in Methane with O₂ via d-Orbital Hybridization Induced by CuO_x Supported on ZnO

ACS Catalysis, Journal Year: 2025, Volume and Issue: 15(3), P. 1607 - 1615

Published: Jan. 15, 2025

Efficiently converting methane (CH4) to C1 products such as CH3OH, HCHO, and CH3OOH is considered a promising route for the chemical industry, while huge challenge of low CH4 activation rate still remains. Here, Cu/ZnO composite catalyst with CuOx supported on ZnO synthesized modify electronic structure utilized conversion. The fast e– transfer channel → Cu O2 facilitates dissociation •OOH, which promotes charge separation and, in parallel, enables oxidation •CH3 by h+ left acceleration effect situ generated •OOH. Mechanistic studies revealed that additional d-π*/d-σ-orbital hybridization between adsorbed O2/CH4 molecules plays decisive roles activation, resulted highest signal, so far we know, ultimately remarkably high yield 21.25 mmol g–1 h–1 100% selectivity over optimized 1 wt % photocatalyst. This work offers valuable guidance designation conversion presence O2.

Language: Английский

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Synergetic Atom‐Island and Metal Alloy Triggering Tandem Reaction for CH₄ Photooxidation to CH₃OH

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

Published: Jan. 28, 2025

Abstract CH 3 OH is the most desired product of photocatalytic 4 conversion. The prominent metal‐decorated photocatalyst challenging in both high yield and selectivity for products due to over‐oxidation by •OH mechanism. Here, interstitial Zn fabricated into i O induce formation atom island rapid single electron reduction 2 •OOH instead selective combination with methyl OOH. AuPd alloy simultaneously decorated on surface tuning OOH adsorption OH. synergy achieve a tandem reaction pathway (CH →CH OOH→CH OH) an unprecedented 2444 mmol g −1 h (or 8800 µmol cat ) 98.3% selectivity, which bypasses mechanism An apparent quantum efficiency 18.53% at 370 nm conversion are super reported systems. Thus, this work provides new strategy synergetic metal photocatalysts through mediate oxidation

Language: Английский

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Constructing Zn Defects in Zinc Oxide and Interface-Anchoring of Co Ion: Modulating D-Band Center for Efficient Peroxymonosulfate Activation

Published: Jan. 1, 2025

Language: Английский

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Intermarriage of InVO4 and BiVO4 via cation-exchange to boost charge separation for efficient photocatalytic CH4 oxidation to oxygenates

Science China Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 24, 2025

Language: Английский

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Selective Photocatalytic Aerobic Oxidation of Methane to Methyl Hydroperoxide by ZnO-Loaded Single-Atomic Ruthenium Oxide Catalyst

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 27, 2025

Photooxidation of CH4 to value-added chemicals with high selectivity offers a promising pathway drive the rational utilization natural gas resources renewable energy under mild conditions. However, owing poor chemoselectivity reactive oxygen radical formation and consecutive side reactions primary products, synthesis peroxide directly from oxidation remains challenging. Here, we report single-atom ruthenium oxide-doped ZnO as highly selective photocatalyst for aerobic CH3OOH. Under optimal conditions, CH3OOH rate over Ru1Ox/ZnO reaches 321 μmol gcat–1 h–1 90.9% simulated solar irradiation. Mechanistic studies reveal that generation •OOH radicals via reduction ability prevent secondary are main advantages Ru1Ox/ZnO, accounting remarkable CH4. The Ru oxide/ZnO catalyst also exhibits alkyl hydroperoxide in photocatalytic low paraffins, which provides solution prepare single-step hydrocarbon substrates.

Language: Английский

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

ACS Catalysis, Journal Year: 2025, Volume and Issue: unknown, P. 4824 - 4836

Published: March 7, 2025

Language: Английский

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Insights Into the Light‐Driven Conversion of Methane: Mechanisms, Characterization, and Perspective

EcoEnergy, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 26, 2025

ABSTRACT Methane, recognized as a promising substitute for conventional fossil fuels due to its abundant availability, low cost, and high energy density, can be converted into value‐added products, providing sustainable energy–carbon utilization approach. However, inert molecules require significant C–H bond activation. Photocatalytic conversion offers an effective mild‐condition solution, reducing thermocatalysis demands enhancing activation efficiency selective chemical production. This review systematically arranges photocatalytic mechanisms, categorizes discusses challenges, prospects, solutions methane photocatalysis development.

Language: Английский

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Constructing zinc defects in zinc oxide and interface-anchoring of tricobalt tetraoxide: Modulating d-band center for efficient peroxymonosulfate activation

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: unknown, P. 137451 - 137451

Published: March 1, 2025

Language: Английский

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