Preparation of three-dimensional copper foam with Pd and Ru nanoparticles composite electrode with metal-scaffold structure and its study on tetracycline degradation

Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: 1002, P. 175236 - 175236

Published: June 20, 2024

Language: Английский

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Electron Divergence of Cu^δ− and Pd^δ+ in Cu₃Pd Alloy-Based Heterojunctions Boosts Concerted C≡C Bond Binding and the Volmer Step for Alkynol Semihydrogenation

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(27), P. 18451 - 18458

Published: June 27, 2024

Electrocatalytic semihydrogenation of alkynols presents a sustainable alternative to conventional thermal methodologies for the high-value production alkenols. The design efficient catalysts with superior catalytic and energy efficiency poses significant challenge. Here, we present application an electron-divergent Cu3Pd alloy-based heterojunction in promoting electrocatalytic alkenols using water as proton source. tunable electron divergence Cuδ− Pdδ+, modulated by rectifying contact nitrogen-rich carbons, enables concerted binding active H species from Volmer step dissociation C≡C bond on Pdδ+ sites. Simultaneously, pronounced facilitates universal adsorption OH dual-center substantially boosts inhibition completing hydrogen evolution give turnover frequency 2412 h–1, outperforming reported electrocatalysts' value 7.3. Moreover, continuous at industrial-related current density (−200 mA cm–2) over durable Cu3Pd-based electrolyzer could achieve cathodic 45 mol kW·h–1, 1.7 times bench-marked reactors, promising great potential industrial synthesis.

Language: Английский

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Electrocatalytic Aromatic Alcohols Splitting to Aldehydes and H₂ Gas

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 19, 2024

Selective electrocatalytic transformation of alcohols to aldehydes offers an efficient and environmentally friendly platform for the simultaneous production fine chemicals pure hydrogen gas. However, traditional alcohol oxidation reactions (AORs) in aqueous electrolyte unavoidably face competitive (e.g., water overoxidations reactions) presence active oxygen species from oxidation, causing unwanted decrease final efficiency selectivity. Here, we developed integrated all-solid proton generator-transfer electrolyzer trigger splitting reaction (ASR). In this process, only O-H C-H bonds can be cleaved at generator (Pt nanoparticles), thereby completely avoiding all involving give a > 99% selectivity aldehydes. The as-generated protons are transported cathode by three-dimensional (3D) conducting network (assemblies ionomers carbon spheres) production. Unlike poor (<22%) durability (<3 h) conventional AOR electrolyzer, ASR could continuously operated low cell voltage 1.2 V least 10 days high Faradaic 80-93% aldehyde

Language: Английский

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Efficient Electrocatalytic Semi‐Hydrogenation of Alkynes by Interfacial Engineering of Atomically Precise Silver Nanoclusters

Angewandte Chemie International Edition, Journal Year: 2025, Volume and Issue: unknown

Published: March 6, 2025

Owing to its green energy and hydrogen sources, electrocatalytic semi-hydrogenation of alkynes is an attractive alternative for industrial alkene production. However, broad application hindered by low selectivity Faradaic efficiency (FE) due side reactions like over-hydrogenation alkanes. Here, we demonstrate that atomically precise Ag25(MHA)18 nanoclusters (NCs) can electrocatalyze alkyne with 98 % conversion, 99 selectivity, 85 FE, in a substrate pool. This achieved engineering the local environment at catalytically active sites. We leverage amphiphilic MHA (6-mercaptohexanoic acid) ligands pre-concentrate water molecules near ligand-layer/Ag25 interface. Long-chain disrupt hydrogen-bond network interface, high negative charge Ag25 attract weakly hydrogen-bonded through counterions promote generation (H*), while enzyme-like catalytic pockets on surface NCs facilitate adsorption terminal via σ-bonding Ag atoms. Density functional theory calculations confirmed preference model further revealed facile release product alkene. work not only exemplifies interface strategy control sites optimized activity selectivity.

Language: Английский

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Amorphous CoS Polyhedron Endow Efficient Electrocatalytic Semi-hydrogenation of Acetylene

Materials Today Communications, Journal Year: 2025, Volume and Issue: unknown, P. 112431 - 112431

Published: April 1, 2025

Language: Английский

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Boosted high-throughput D⁺ transfer from D₂O to unsaturated bonds via Pdδ+ cathode for solvent-free deuteration

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: May 15, 2025

Language: Английский

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Breaking the activity-selectivity trade-off in photocatalytic semihydrogenation of alkynes over palladium nanoparticles with phosphate modification

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: unknown, P. 124948 - 124948

Published: Dec. 1, 2024

Language: Английский

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Pd particles decorated 2D-MoSe2 nanomesh as a distinctive catalyst for semihydrogenation of alkynes

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 497, P. 154752 - 154752

Published: Aug. 10, 2024

Language: Английский

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Interfacial Science for Electrosynthesis

Current Opinion in Electrochemistry, Journal Year: 2024, Volume and Issue: 47, P. 101569 - 101569

Published: July 11, 2024

Language: Английский

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