Ruthenium–Cobalt Solid-Solution Alloy Nanoparticles for Enhanced Photopromoted Thermocatalytic CO₂ Hydrogenation to Methane

ACS Nano, Год журнала: 2024, Номер 18(17), С. 11449 - 11461

Опубликована: Апрель 22, 2024

Bimetallic alloy nanoparticles have garnered substantial attention for diverse catalytic applications owing to their abundant active sites and tunable electronic structures, whereas the synthesis of ultrafine with atomic-level homogeneity bulk-state immiscible couples remains a formidable challenge. Herein, we present RuxCo1–x solid-solution (ca. 2 nm) across entire composition range, highly efficient, durable, selective CO2 hydrogenation CH4 under mild conditions. Notably, Ru0.88Co0.12/TiO2 Ru0.74Co0.26/TiO2 catalysts, 12 26 atom % Ru being substituted by Co, exhibit enhanced activity compared monometallic Ru/TiO2 counterparts both in dark light irradiation. The comprehensive experimental investigations density functional theory calculations unveil that state is subtly modulated intimate interaction between Co nanoparticles, this effect results decline conversion energy barrier, thus ultimately culminating an elevated performance relative catalysts. In photopromoted thermocatalytic process, photoinduced charge carriers localized photothermal play pivotal role facilitating chemical reaction which accounts further boosted methanation performance.

Язык: Английский

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Recent progress on VOC pollution control via the catalytic method

CHINESE JOURNAL OF CATALYSIS (CHINESE VERSION), Год журнала: 2024, Номер 61, С. 71 - 96

Опубликована: Июнь 1, 2024

Язык: Английский

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Optimizing selectivity via steering dominant reaction mechanisms in steam reforming of methanol for hydrogen production

Nature Communications, Год журнала: 2025, Номер 16(1)

Опубликована: Фев. 24, 2025

Enhancing selectivity towards specific products remains a pivotal challenge in energy catalysis. Herein, we present strategy to refine via pathway optimization, exemplified by the rational design of catalysts for methanol steam reforming. Over traditional Pd/ZnO catalysts, direct decomposition key intermediates CH2O* into CO and H2 on PdZn alloys competes with oxidation CO2, leading inferior product distribution. To address this challenge, Cu is introduced modify catalytic dynamics, lowering dissociation barrier water provide more active hydroxyl groups CH2O*. Simultaneously, desorption PdCu elevated, thereby hindering decomposition. This dual functionality enhances both activity reforming reaction. By modulating activation patterns intermediate species, approach provides new insights catalyst improved reaction selectivity. Improving Here, authors introduce refining through

Язык: Английский

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Promotion Effect of Strong CeO2/Co3O4 Interfacial Interaction for Light Alkane Catalytic Removal

Applied Catalysis B Environment and Energy, Год журнала: 2025, Номер unknown, С. 125150 - 125150

Опубликована: Фев. 1, 2025

Язык: Английский

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Precise Lattice‐Strain Modulation of Hematite Enabled by Gradient Doping of Mn for Enhanced Photoelectrocatalytic Oxidative C─C Bond Scission

Small Structures, Год журнала: 2024, Номер 5(6)

Опубликована: Фев. 5, 2024

The high‐value utilization of biomass feedstock is fascinating but limited by efficient C─H activation to break C─C bonds. Herein, F‐Fe 2 O 3 ‐Mn photoanodes with modulable compressive strain are fabricated gradient infusion Mn into F‐doped hematite (F‐Fe ), which illustrated be highly for oxidative bond cleavage various bio‐based 1,2‐diols produce benzoic acids or aromatic ketones (94.5–97.2% yields) in photoelectrocatalytic (PEC) device, coupling a high H production 1180 μmol cm −2 (≈96% yield). doping species the photoelectrode bulk results improved photoexcited carriers separation and transfer efficiency (3.41 mA ). On other hand, lattice distortion induced also leads effect on F─Fe ─Mn, can precisely modulate electronic structure. Control experiments, situ characterization, theoretical calculations elaborate that capable adjusting position d ‐band center facilitate activation, remarkably enabling PEC breaking 1,2‐diol desorption oxidized product. This “one‐stone‐two‐bird” strategy presents straightforward protocol efficiently bonds organic transformations via oxidation.

Язык: Английский

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Crystal-facet-dependent, electron sink effect for the enhanced selective oxidation of polyols at the secondary hydroxyl position

Journal of Catalysis, Год журнала: 2024, Номер 431, С. 115401 - 115401

Опубликована: Фев. 29, 2024

Язык: Английский

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Enhanced catalytic performance and N2 yield of Ag/CeO2 catalyst by Cu modification for NVOCs removal

Chemical Engineering Journal, Год журнала: 2024, Номер 488, С. 151117 - 151117

Опубликована: Апрель 8, 2024

Язык: Английский

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Regulation Lattice Oxygen Mobility via Dual Single Atoms for Simultaneously Enhancing VOC Oxidation and NO_x Reduction

Environmental Science & Technology, Год журнала: 2024, Номер 58(39), С. 17475 - 17484

Опубликована: Сен. 16, 2024

Synergistic catalytic removal of multipollutants (e.g., volatile organic compound (VOC) oxidation and nitrogen oxide (NO

Язык: Английский

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Revealing La doping activation or inhibition of crystal facet effects in Co3O4 for catalytic combustion and water resistance improvement

Chemical Engineering Journal, Год журнала: 2024, Номер 496, С. 153839 - 153839

Опубликована: Июль 7, 2024

Язык: Английский

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Separated Active Site and Reaction Space for Multi‐Pollutant Elimination Significantly Enhancing Low Toxic Product Selectivity

Advanced Functional Materials, Год журнала: 2023, Номер 33(48)

Опубликована: Июль 19, 2023

Abstract It is possible to remove volatile organic compounds containing chlorine (CVOCs, such as chlorobenzene) in a single device designed for selective catalytic reduction of NO x with NH 3 the industries CVOCs and . Breaking efficiency‐selectivity trade‐off chlorobenzene oxidation remains major challenge due conjugation halogen atoms benzene ring reducing nature A stepwise synthesis strategy demontrated disperse dual Ru/Cu Lewis acid sites outside inside zeolite channel. Under confinement zeolite, Ru 4+ site on external surface promotes by weakening p‐π conjugate structure Cl ring, while Cu 2+ within internal channel converts N 2 The mutual interference between successfully avoided. Therefore, low toxic CO HCl selectivity experience considerable increase from 21% 86%, 51% 94% 91% conversion chlorobenzene, maintaining excellent elimination performance (with exceeding 90%). incorporation separated active reaction spaces into design may offer potentials other energy environmental applications.

Язык: Английский

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