Metal-support interaction in supported Pt single-atom catalyst promotes lattice oxygen activation to achieve complete oxidation of acetone at low concentrations

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 480, P. 135839 - 135839

Published: Sept. 15, 2024

Language: Английский

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Promoting stability of sub-3 nm In2S3 nanoparticles via sulfur anchoring for CO2 electroreduction to formate

CHINESE JOURNAL OF CATALYSIS (CHINESE VERSION), Journal Year: 2025, Volume and Issue: 71, P. 138 - 145

Published: April 1, 2025

Language: Английский

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Resolving Transformative Reactions in Zeolites under Catalytic Hydrothermal Conditions

The Journal of Physical Chemistry C, Journal Year: 2024, Volume and Issue: 128(25), P. 10428 - 10439

Published: June 11, 2024

The nanoscale structuring of zeolites and related porous solids is vitally important to enhance adsorption/desorption, accessibility active sites, mass transfer, catalytic conversion. Specifically, the chemical behavior imparts significant roles on reaction rates, selectivity, product yields, which are collectively affected during reactions. To understand variations in surface reactivity associated intermediate species, here we examine impact postsynthesis ion-exchange, calcination, hydrothermal reactions bulk Al site distributions Faujasite (FAU)-type Y X ion-exchanged with H+, Na+, K+ counterions. Ex situ X-ray diffraction electron microscopy analysis reveal substantial changes long-range order, porosity measurements suggest that these transformative strongly depend nature cations conditions. These results corroborated by 1D 27Al 2D 27Al–1H solid-state NMR spectra acquired at a high-field (28.2 T, 1H Larmor frequencies 1200 313 MHz, respectively), allowed local structures distinct framework/extra-framework Lewis Brønsted-acid sites (BASs), be resolved unprecedented sensitivity resolution. through-space proximities between AlIV, AlV, AlVI SiOH defects AlOH groups, BAS observed, providing structural insights into interface. Notably, lead formation framework-associated AlIV species H+-FAU miniscule concentrations (∼10 wt %) expected influence overall activity. findings deepen our understandings reactive surfaces interfaces solid supports under reactions, atomic-scale structure–stability–activity relationships.

Language: Английский

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Rutile TiO₂-Supported Pt Nanoparticle Catalysts for the Low-Temperature Oxidation of Ethane to Ethanol

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(29), P. 20122 - 20132

Published: July 10, 2024

Structure-function relationships of supported metal nanoparticle catalysts in the CO-assisted oxidation ethane to ethanol were investigated. A rutile TiO

Language: Английский

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N‐Halosuccinimide‐CeCl3 Transient Charge‐Transfer Complexes as Semi Heterogeneous Photocatalyst in Cyclization of N‐Propargylamides

Chemistry - A European Journal, Journal Year: 2024, Volume and Issue: 30(57)

Published: Aug. 1, 2024

In this work, we used photoinert anhydrous cerium(III) chloride, to form a transient charge-transfer (CT) complex with NXS (N-bromosuccinimide or NBS and N-iodosuccinimide NIS) in acetonitrile. These CT complexes acted as semi-heterogeneous photocatalyst. allowed the Ce(III) ions absorb light, turning them into strong electron donors that transferred electrons NXS. This created halide radicals from radical anions, helping turn N-propargylamides oxazole aldehydes. Experiments DMPO spin-trapping showed radical-based mechanism followed single transfer (SET) pathway. Notably, CeCl

Language: Английский

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Catalytic dehydrogenation for hydrogen production controlled by metal-supported heterogeneous catalysts

Catalysis Science & Technology, Journal Year: 2024, Volume and Issue: 14(20), P. 5784 - 5810

Published: Jan. 1, 2024

Dehydrogenation is a chemical reaction that produces value-added hydrogen-deficient compounds with hydrogen molecules can be ubiquitously used in industries.

Language: Английский

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Ni3S2/bamboo fiber film flexible electrodes based on P self-doped interfacially coupled conductive networks

Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: unknown, P. 176705 - 176705

Published: Sept. 1, 2024

Language: Английский

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Fluxionality of Electronic Structures of Supported Metal Catalysts Driven by the Fluctuational Electronic Configurations of the Substrate

The Journal of Physical Chemistry C, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 3, 2024

Electronic structures play a key role in the activities of supported metal catalysts. In this work, by using ab initio molecular dynamics simulations and density functional theory calculations, we report fluxional electronic Pd clusters driven dramatic fluctuation configurations at CeO2(111) substrate during process. The binding energies, charges, magnetic moments, states change substantially, even if their vary slightly. It indicates that dynamic evolution cannot be ignored to precisely evaluate nanoclusters catalytic reactions.

Language: Английский

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Impact of Metal Clusters on the Lewis Acidity of Oxide Surfaces: First-Principles Calculations of Pt₁₀/γ-Al₂O₃(110)

The Journal of Physical Chemistry C, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 25, 2024

Language: Английский

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Correlation between ligand-mediated silver species on TiO2 nanosheet with the photocatalytic hydrogen evolution activities

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 683, P. 773 - 785

Published: Dec. 18, 2024

Language: Английский

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