Multiple active site metal-based catalysts for C-N coupling reactions and the beyond

Next Materials, Journal Year: 2025, Volume and Issue: 8, P. 100555 - 100555

Published: Feb. 21, 2025

Language: Английский

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Advances in rare metal catalysis for common CO2 reduction reactions

Rare Metals, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 24, 2025

Language: Английский

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Triggering Synergistic Electronic Effect via Electron‐Directed Transfer within Pt_NPs‐Fe/NC Oxygen Reduction Catalyst for Zinc‐Air Batteries

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

Published: Feb. 28, 2025

Abstract Rationally tuning Fe‐N‐C catalysts with synergistic nanoparticles for efficient oxygen reduction reaction (ORR) still remains challenging. Here, a nitrogen‐doped carbon‐supported bimetallic catalyst (Pt NPs ‐Fe/NC), combining atomically dispersed sites Pt nanoparticles, is synthesized. Experimental results reveal directional electron transfer between and Fe sites, which induces an effect, effectively modulating the density around sites. The modulation significantly enhances ORR catalytic activity of ‐Fe/NC. As result, ‐Fe/NC displays half‐wave potential 0.901 V (versus RHE) Tafel slope 59 mV dec −1 , surpassing performance commercial Pt/C demonstrating accelerated kinetics. In meantime, maintains excellent durability in terms stability as well. When assembled into liquid zinc‐air batteries (ZABs), delivers peak power 201.48 mW cm −2 specific capacity 809 mAh g . Additionally, ‐Fe/NC‐based flexible ZABs display outstanding discharge cycling stability. This work highlights effectiveness multiscale advancing provides valuable insights construction strategies energy storage applications.

Language: Английский

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Boosting Alcohol Oxidation Electrocatalysis with Multifactorial Engineered Pd1/Pt Single-Atom Alloy-BiOx Adatoms Surface

Nano-Micro Letters, Journal Year: 2025, Volume and Issue: 17(1)

Published: March 3, 2025

Abstract Engineering nanomaterials at single-atomic sites could enable unprecedented catalytic properties for broad applications, yet it remains challenging to do so on the surface of multimetallic nanocrystals. Herein, we present multifactorial engineering (size, shape, phase, and composition) fully ordered PtBi nanoplates atomic level, achieving a unique catalyst where face-centered cubic ( fcc ) Pt edges are modified by isolated Pd atoms BiO x adatoms. This 1 /Pt-BiO electrocatalyst exhibits an ultrahigh mass activity 16.01 A mg −1 Pt+Pd toward ethanol oxidation in alkaline electrolyte enables direct fuel cell peak power density 56.7 mW cm −2 . The surrounding adatoms critical mitigating CO-poisoning surface, /Pt single-atom alloy further facilitates electrooxidation CH 3 2 OH. work offers new insights into rational design construction sophisticated highly efficient electrocatalysis.

Language: Английский

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Breaking symmetry for better catalysis: insights into single-atom catalyst design

Chemical Society Reviews, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

This review examines the strategies of symmetry breaking (charge/coordination/geometric) in single-atom catalysts to regulate active site electronic structures, greatly enhancing catalytic performance.

Language: Английский

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Heteroatom Introduction and Electrochemical Reconstruction on Heterostructured Co‐Based Electrocatalysts for Hydrogenation of Quinolines

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

Published: March 13, 2025

Abstract Electrocatalytic hydrogenation (ECH) of quinoline provides an eco‐friendly and prospective route to achieve the highly value‐added generation 1,2,3,4‐tetrahydroquinoline (THQ). Co element has been proven be efficient catalytic site for ECH quinoline, but rational regulation electronic structure active improve activity is still a challenge. Herein, hierarchical core–shell consisting NiCo‐MOF nanosheets encapsulated Cu(OH) 2 nanorods (Cu(OH) @CoNi‐MOF) constructed. The heterojunction promotes transfer interfacial charge optimizes site. introduction Ni significantly increases binding between Cu, preventing exfoliation sites from core, reducing reaction energy barrier rate‐determining step, thus resulting in superior reactivity durability. Besides, electrochemical reconstruction further modulates by forming multi‐metallic compound with low valence state (NiCoCu), achieving optimal performance conversion 99.5% THQ selectivity 100%. A flow‐cell system assembled, demonstrating prospect industrial application.

Language: Английский

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Efficient urea synthesis by coupling catalyst of nickel-single-atom and copper-cluster

Journal of Material Science and Technology, Journal Year: 2025, Volume and Issue: unknown

Published: March 1, 2025

Language: Английский

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Progress of synergistic oxygen electrocatalysis between single atoms and nanoparticles/clusters

International Journal of Hydrogen Energy, Journal Year: 2025, Volume and Issue: 125, P. 86 - 99

Published: April 8, 2025

Language: Английский

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Enhanced CO₂ Electroreduction by Stabilizing ^*COOH on Ni Single Atoms via Short‐ and Long‐Range Electronic Modulation

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

Published: April 24, 2025

Abstract Ni single‐atoms (SAs) are active for electrocatalytic CO 2 reduction reaction (CO RR) to CO, but their performance still needs be further improved practical implementation. Herein, a strategy of “short‐ and long‐range modulation” is reported synergistically modulate the electronic structure SAs by constructing nanoparticles (NPs) integrated with N, P‐coordinated on N‐doped carbon supports (Ni‐P 1 N 3 /Ni NPs @NC). Experiments theoretical calculations reveal that both short‐range modulation involving Ni–P coordination collectively enhance electron localization around SAs, thus increasing binding strength key * COOH intermediate. This results in an RR lowering energy barrier. Ni‐P @NC exhibits Faradaic efficiency exceeding 99.0% across wide potential range from −0.5 −1.1 V versus reversible hydrogen electrode (vs RHE), highest partial current density −544 mA cm −2 at vs RHE.

Language: Английский

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Hydrogen‐Bond‐Assisted Synthesis of Single‐Atom and Nanocluster Synergistic Sites for Enhanced Oxygen Reduction Reaction

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

Published: April 27, 2025

Abstract Electrocatalysts combining metal single‐atom and nanocluster synergy are promising alternatives to platinum‐based catalysts for oxygen reduction reaction (ORR). However, controllable synthesis of such with high ORR performance remains challenging due atom aggregation into large nanoparticles. Here, a hydrogen‐bond network confinement approach construct Co Co‐N x ‐C moiety coexisting active sites on nitrogen‐doped porous carbon highly long‐term stable is reported. The optimized Co@Co‐N‐C catalyst exhibits half‐wave potential (E 1/2 ) 0.92 V versus RHE limiting current density (J L 6.02 mA cm −2 ORR, presenting 40 mV positive shift in E than the competitor highest J 15.7% improvement over most . enhanced catalytic originates from between moieties, which modulates electronic structure Co‐based improves electrochemically surface area. zinc‐air battery assembled delivers specific capacity 870 mAh g −1 maximum discharge power 210 mW , representing ≈52% Pt/C‐based devices. This hydrogen‐bond‐assisted strategy opens pathways designing high‐performing diversified fields beyond including water splitting, CO 2 reduction, nitrogen reduction.

Language: Английский

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